Fix property tests

Fixes #887

.editorconfig

@@ -0,0 +1,11 @@
+root = true
+
+[*]
+end_of_line = LF
+trim_trailing_whitespace = true
+insert_final_newline = true
+
+[*.hs]
+indent_style = space
+indent_size = 2
+max_line_length = 80

.github/scripts/build.sh

@@ -27,9 +27,11 @@ build_with_cache --project-file=cabal.project.release -w "${GHC}" --enable-tests
 mkdir -p out
 binary=$(cabal --project-file=cabal.project.release list-bin ghcup)
 binary_test=$(cabal --project-file=cabal.project.release list-bin ghcup-test)
+binary_opttest=$(cabal --project-file=cabal.project.release list-bin ghcup-optparse-test)
 ver=$("${binary}" --numeric-version)
 strip_binary "${binary}"
 cp "${binary}" "out/${ARTIFACT}-${ver}${ext}"
 cp "${binary_test}" "out/test-${ARTIFACT}-${ver}${ext}"
+cp "${binary_opttest}" "out/test-optparse-${ARTIFACT}-${ver}${ext}"
 cp ./dist-newstyle/cache/plan.json "out/${ARTIFACT}.plan.json"
 

.github/scripts/test.sh

@@ -18,8 +18,10 @@ mkdir -p "${GHCUP_BIN}"
 
 cp "out/${ARTIFACT}"-* "$GHCUP_BIN/ghcup${ext}"
 cp "out/test-${ARTIFACT}"-* "ghcup-test${ext}"
+cp "out/test-optparse-${ARTIFACT}"-* "ghcup-test-optparse${ext}"
 chmod +x "$GHCUP_BIN/ghcup${ext}"
 chmod +x "ghcup-test${ext}"
+chmod +x "ghcup-test-optparse${ext}"
 
 "$GHCUP_BIN/ghcup${ext}" --version
 eghcup --version
@@ -29,7 +31,8 @@ sha_sum "$(raw_eghcup --offline whereis ghcup)"
 ### Haskell test suite
 
 ./ghcup-test${ext}
-rm ghcup-test${ext}
+./ghcup-test-optparse${ext}
+rm ghcup-test${ext} ghcup-test-optparse${ext}
 
 ### manual cli based testing
 

app/ghcup/BrickMain.hs

@@ -45,7 +45,7 @@ import           Data.IORef
 import           Data.Vector                    ( Vector
                                                 , (!?)
                                                 )
-import           Data.Versions           hiding ( str )
+import           Data.Versions
 import           Haskus.Utils.Variant.Excepts
 import           Prelude                 hiding ( appendFile )
 import           System.FilePath

cabal.project

@@ -8,6 +8,11 @@ package ghcup
 constraints: http-io-streams -brotli,
              any.aeson >= 2.0.1.0
 
+source-repository-package
+  type: git
+  location: https://github.com/fosskers/versions.git
+  tag: 7bc3355348aac3510771d4622aff09ac38c9924d
+
 package libarchive
   flags: -system-libarchive
 
@@ -23,3 +28,5 @@ package aeson
 package streamly
   flags: +use-unliftio
 
+package *
+  test-show-details: direct

cabal.project.release

@@ -4,6 +4,11 @@ optional-packages: ./vendored/*/*.cabal
 
 optimization: 2
 
+source-repository-package
+  type: git
+  location: https://github.com/fosskers/versions.git
+  tag: 7bc3355348aac3510771d4622aff09ac38c9924d
+
 if os(linux)
   package ghcup
     flags: +tui

docs/guide.md

@@ -43,6 +43,12 @@ All of the following are valid arguments to `ghcup install ghc`:
 
 If the argument is omitted, the default is `recommended`.
 
+Other tags include:
+
+- `prerelease`: a prerelease version
+- `latest-prerelease`: the latest prerelease version
+
+
 ## Manpages
 
 For man pages to work you need [man-db](http://man-db.nongnu.org/) as your `man` provider, then issue `man ghc`. Manpages only work for the currently set ghc.
@@ -203,34 +209,6 @@ url-source:
   - "https://raw.githubusercontent.com/haskell/ghcup-metadata/master/ghcup-prereleases-0.0.7.yaml"
 ```
 
-### Nightlies
-
-Nightlies are just a nother release channel. Currently, only GHC supports nightlies, which are binary releases
-that are built every night from `master`.
-
-To add the nightly channel, run:
-
-```sh
-ghcup config add-release-channel https://ghc.gitlab.haskell.org/ghcup-metadata/ghcup-nightlies-0.0.7.yaml
-```
-
-To list all nightlies from 2023, run:
-
-```sh
-ghcup list --show-nightly --tool=ghc --since=2023-01-01
-```
-
-Ways to install a nightly:
-
-```sh
-# by date
-ghcup install ghc 2023-06-20
-# by version
-ghcup install ghc 9.7.20230619
-# by tag
-ghcup install ghc latest-nightly
-```
-
 ## Stack integration
 
 Stack manages GHC versions internally by default. In order to make it use ghcup installed
@@ -489,8 +467,10 @@ this is cryptographically secure.
 First, obtain the gpg keys:
 
 ```sh
-gpg --batch --keyserver keys.openpgp.org     --recv-keys 7D1E8AFD1D4A16D71FADA2F2CCC85C0E40C06A8C
+gpg --batch --keyserver keyserver.ubuntu.com --recv-keys 7D1E8AFD1D4A16D71FADA2F2CCC85C0E40C06A8C
 gpg --batch --keyserver keyserver.ubuntu.com --recv-keys FE5AB6C91FEA597C3B31180B73EDE9E8CFBAEF01
+gpg --batch --keyserver keyserver.ubuntu.com --recv-keys 88B57FCF7DB53B4DB3BFA4B1588764FBE22D19C4
+gpg --batch --keyserver keyserver.ubuntu.com --recv-keys EAF2A9A722C0C96F2B431CA511AAD8CEDEE0CAEF
 ```
 
 Then verify the gpg key in one of these ways:

docs/install.md

@@ -38,49 +38,78 @@ Also see [tags and shortcuts](../guide/#tags-and-shortcuts) for more information
 
 ### Linux Debian
 
+#### Generic
+
 The following distro packages are required: `build-essential curl libffi-dev libffi6 libgmp-dev libgmp10 libncurses-dev libncurses5 libtinfo5`
 
+#### Version >= 11
+
+The following distro packages are required: `build-essential curl libffi-dev libffi7 libgmp-dev libgmp10 libncurses-dev libncurses5 libtinfo5`
+
 ### Linux Ubuntu
 
+#### Generic
+
 The following distro packages are required: `build-essential curl libffi-dev libffi6 libgmp-dev libgmp10 libncurses-dev libncurses5 libtinfo5`
 
+#### Version >= 20.04 && < 20.10
+
+The following distro packages are required: `build-essential curl libffi-dev libffi7 libgmp-dev libgmp10 libncurses-dev libncurses5 libtinfo5`
+
+#### Version >= 20.10
+
+The following distro packages are required: `build-essential curl libffi-dev libffi8ubuntu1 libgmp-dev libgmp10 libncurses-dev libncurses5 libtinfo5`
+
+
 ### Linux Fedora
 
+#### Generic
+
 The following distro packages are required: `gcc gcc-c++ gmp gmp-devel make ncurses ncurses-compat-libs xz perl`
 
-### Linux Mageia
-
-The following distro packages are required: `curl gcc gcc-c++ gmp libffi-devel libffi7 libgmp-devel libgmp10 make libncurses-devel libncurses5 xz perl`
 
 ### Linux CentOS
 
+#### Generic
+
 The following distro packages are required: `gcc gcc-c++ gmp gmp-devel make ncurses ncurses-compat-libs xz perl`
 
+#### Version >= 7 && < 8
+
+The following distro packages are required: `gcc gcc-c++ gmp gmp-devel make ncurses xz perl`
+
+
 ### Linux Alpine
 
+#### Generic
+
 The following distro packages are required: `binutils-gold curl gcc g++ gmp-dev libc-dev libffi-dev make musl-dev ncurses-dev perl tar xz`
 
-### Linux VoidLinux
-
-The following distro packages are required: `gcc gmp curl coreutils xz ncurses make ncurses-libtinfo-libs perl tar`
 
 ### Linux (generic)
 
+#### Generic
+
 You need the following packages: curl g++ gcc gmp make ncurses realpath xz-utils. Consult your distro documentation on the exact names of those packages.
 
 ### Darwin
 
+#### Generic
+
 On OS X, in the course of running ghcup you will be given a dialog box to install the command line tools. Accept and the requirements will be installed for you. You will then need to run the command again.
 On Darwin M1 you might also need a working llvm installed (e.g. via brew) and have the toolchain exposed in PATH.
 
 ### FreeBSD
 
+#### Generic
+
 The following distro packages are required: `curl gcc gmp gmake ncurses perl5 libffi libiconv`
 
-Notice that only FreeBSD 13.x is supported. If the installation fails, complaining about `libncursesw.8.so`, you will need to install FreeBSD 12 compat package first, for example, `pkg install misc/compat12x`.
 
 ### Windows
 
+#### Generic
+
 On Windows, msys2 should already have been set up during the installation, so most users should just proceed. If you are installing manually, make sure to have a working mingw64 toolchain and shell.
 
 ## Next steps
@@ -104,14 +133,19 @@ GHCup supports the following tools, which are also known as the **Haskell Toolch
 <table>
 <thead><tr><th>GHC Version</th><th>Tags</th></tr></thead>
 <tbody>
-<tr><td>9.6.1</td><td><span style="color:blue">latest</span>, base-4.18.0.0</td></tr>
+<tr><td>9.6.2</td><td><span style="color:blue">latest</span>, base-4.18.0.0</td></tr>
+<tr><td>9.6.1</td><td>base-4.18.0.0</td></tr>
+<tr><td>9.4.7</td><td>base-4.17.2.0</td></tr>
+<tr><td>9.4.6</td><td>base-4.17.2.0</td></tr>
+<tr><td>9.4.5</td><td>base-4.17.1.0</td></tr>
 <tr><td>9.4.4</td><td>base-4.17.0.0</td></tr>
 <tr><td>9.4.3</td><td>base-4.17.0.0</td></tr>
 <tr><td>9.4.2</td><td>base-4.17.0.0</td></tr>
 <tr><td>9.4.1</td><td>base-4.17.0.0</td></tr>
+<tr><td>9.2.8</td><td><span style="color:green">recommended</span>, base-4.16.4.0</td></tr>
 <tr><td>9.2.7</td><td>base-4.16.4.0</td></tr>
 <tr><td>9.2.6</td><td>base-4.16.4.0</td></tr>
-<tr><td>9.2.5</td><td><span style="color:green">recommended</span>, base-4.16.4.0</td></tr>
+<tr><td>9.2.5</td><td>base-4.16.4.0</td></tr>
 <tr><td>9.2.4</td><td>base-4.16.3.0</td></tr>
 <tr><td>9.2.3</td><td>base-4.16.2.0</td></tr>
 <tr><td>9.2.2</td><td>base-4.16.1.0</td></tr>
@@ -166,8 +200,13 @@ GHCup supports the following tools, which are also known as the **Haskell Toolch
 <table>
 <thead><tr><th>HLS Version</th><th>Tags</th></tr></thead>
 <tbody>
-<tr><td>1.9.1.0</td><td><span style="color:blue">latest</span></td></tr>
+<tr><td>2.2.0.0</td><td><span style="color:blue">latest</span>, <span style="color:green">recommended</span></td></tr>
-<tr><td>1.9.0.0</td><td><span style="color:green">recommended</span></td></tr>
+<tr><td>2.1.0.0</td><td></td></tr>
+<tr><td>2.0.0.1</td><td></td></tr>
+<tr><td>2.0.0.0</td><td></td></tr>
+<tr><td>1.10.0.0</td><td></td></tr>
+<tr><td>1.9.1.0</td><td></td></tr>
+<tr><td>1.9.0.0</td><td></td></tr>
 <tr><td>1.8.0.0</td><td></td></tr>
 <tr><td>1.7.0.0</td><td></td></tr>
 <tr><td>1.6.1.0</td><td></td></tr>
@@ -186,7 +225,8 @@ GHCup supports the following tools, which are also known as the **Haskell Toolch
 <table>
 <thead><tr><th>Stack Version</th><th>Tags</th></tr></thead>
 <tbody>
-<tr><td>2.9.3</td><td><span style="color:blue">latest</span>, <span style="color:green">recommended</span></td></tr>
+<tr><td>2.11.1</td><td><span style="color:blue">latest</span></td></tr>
+<tr><td>2.9.3</td><td><span style="color:green">recommended</span></td></tr>
 <tr><td>2.9.1</td><td></td></tr>
 <tr><td>2.7.5</td><td></td></tr>
 <tr><td>2.7.3</td><td></td></tr>
@@ -200,7 +240,7 @@ GHCup supports the following tools, which are also known as the **Haskell Toolch
 
 This list may not be exhaustive and specifies support for bindists only.
 
-| Platform | Architecture | ghcup | GHC | cabal | HLS | stack | 
+| Platform | Architecture | ghcup | GHC | cabal | HLS | stack |
 | ------ | ------ | ------ | ------ | ------ | ------ | ------ |
 | Windows 7 | amd64 | ❔ | ✅ | ✅ | ✅ | ✅ |
 | Windows 10 | amd64 | ✅ | ✅ | ✅ | ✅ | ✅ |
@@ -256,7 +296,14 @@ Lower availability of bindists. Stack and HLS binaries are experimental.
 Download the binary for your platform at [https://downloads.haskell.org/~ghcup/](https://downloads.haskell.org/~ghcup/)
 and place it into your `PATH` anywhere.
 
-If you want to GPG verify the binaries, import the following keys first: `7D1E8AFD1D4A16D71FADA2F2CCC85C0E40C06A8C` and `FE5AB6C91FEA597C3B31180B73EDE9E8CFBAEF01`.
+If you want to GPG verify the binaries, import the following keys first:
+
+```sh
+gpg --batch --keyserver keyserver.ubuntu.com --recv-keys 7D1E8AFD1D4A16D71FADA2F2CCC85C0E40C06A8C
+gpg --batch --keyserver keyserver.ubuntu.com --recv-keys FE5AB6C91FEA597C3B31180B73EDE9E8CFBAEF01
+gpg --batch --keyserver keyserver.ubuntu.com --recv-keys 88B57FCF7DB53B4DB3BFA4B1588764FBE22D19C4
+gpg --batch --keyserver keyserver.ubuntu.com --recv-keys EAF2A9A722C0C96F2B431CA511AAD8CEDEE0CAEF
+```
 
 Then adjust your `PATH` in `~/.bashrc` (or similar, depending on your shell) like so:
 
@@ -318,6 +365,24 @@ export PATH="$HOME/.cabal/bin:$HOME/.ghcup/bin:$PATH"
 
 All set. You can run `cabal init` now in an empty directory to start a project.
 
+## Esoteric distros
+
+### Void Linux
+
+Since void linux can be installed with glibc and musl, it's hard to support correctly with ghcup.
+One way to make ghcup work on **Void Linux musl** is to follow the [Overriding distro detection](../guide/#overriding-distro-detection)
+section and tell it to consider Alpine bindists only. E.g.:
+
+```sh
+curl --proto '=https' --tlsv1.2 -sSf https://get-ghcup.haskell.org | BOOTSTRAP_HASKELL_MINIMAL=1 sh
+source ~/.ghcup/env
+ghcup config set platform-override '{ "arch": "A_64", "platform": { "contents": "Alpine", "tag": "Linux" }, "version": "3.17" }'
+ghcup install cabal --set latest
+ghcup install ghc --set latest
+ghcup install stack --set latest
+ghcup install hls --set latest
+```
+
 ## Vim integration
 
 See [ghcup.vim](https://github.com/hasufell/ghcup.vim).

ghcup.cabal

@@ -25,10 +25,10 @@ extra-source-files:
   cbits/dirutils.h
   data/build_mk/cross
   data/build_mk/default
-  test/data/dir/.keep
+  test/ghcup-test/data/dir/.keep
-  test/data/file
+  test/ghcup-test/data/file
-  test/golden/unix/GHCupInfo.json
+  test/ghcup-test/golden/unix/GHCupInfo.json
-  test/golden/windows/GHCupInfo.json
+  test/ghcup-test/golden/windows/GHCupInfo.json
 
 source-repository head
   type:     git
@@ -53,6 +53,43 @@ flag no-exe
   default:     False
   manual:      True
 
+common app-common-depends
+  build-depends:
+    , aeson                  >=1.4
+    , aeson-pretty           ^>=0.8.8
+    , async                  ^>=2.2.3
+    , base                   >=4.12     && <5
+    , bytestring             >=0.10     && <0.12
+    , cabal-install-parsers  >=0.4.5
+    , cabal-plan             ^>=0.7.2
+    , containers             ^>=0.6
+    , deepseq                ^>=1.4
+    , directory              ^>=1.3.6.0
+    , filepath               ^>=1.4.2.1
+    , haskus-utils-types     ^>=1.5
+    , haskus-utils-variant   ^>=3.2.1
+    , libarchive             ^>=3.0.3.0
+    , megaparsec             >=8.0.0    && <9.3
+    , mtl                    ^>=2.2
+    , optparse-applicative   >=0.15.1.0 && <0.18
+    , pretty                 ^>=1.1.3.1
+    , pretty-terminal        ^>=0.1.0.0
+    , process                ^>=1.6.11.0
+    , resourcet              ^>=1.2.2
+    , safe                   ^>=0.3.18
+    , safe-exceptions        ^>=0.1
+    , tagsoup                ^>=0.14
+    , template-haskell       >=2.7      && <2.20
+    , temporary              ^>=1.3
+    , text                   ^>=2.0
+    , time                   >=1.9.3    && <1.12
+    , unordered-containers   ^>=0.2
+    , uri-bytestring         ^>=0.3.2.2
+    , utf8-string            ^>=1.0
+    , vector                 ^>=0.12
+    , versions               >=6.0.3    && <6.1
+    , yaml-streamly          ^>=0.12.0
+
 library
   exposed-modules:
     GHCup
@@ -137,7 +174,7 @@ library
     , pretty-terminal       ^>=0.1.0.0
     , regex-posix           ^>=0.96
     , resourcet             ^>=1.2.2
-    , retry                 ^>=0.8.1.2 || ^>=0.9
+    , retry                 >=0.8.1.2    && <0.10
     , safe                  ^>=0.3.18
     , safe-exceptions       ^>=0.1
     , split                 ^>=0.2.3.4
@@ -146,13 +183,13 @@ library
     , template-haskell      >=2.7        && <2.20
     , temporary             ^>=1.3
     , text                  ^>=2.0
-    , time                  ^>=1.9.3 || ^>=1.10 || ^>=1.11
+    , time                  >=1.9.3      && <1.12
     , transformers          ^>=0.5
     , unliftio-core         ^>=0.2.0.1
     , unordered-containers  ^>=0.2.10.0
     , uri-bytestring        ^>=0.3.2.2
     , vector                ^>=0.12
-    , versions              >=4.0.1      && <5.1
+    , versions              >=6.0.3      && <6.1
     , word8                 ^>=0.1.3
     , yaml-streamly         ^>=0.12.0
     , zlib                  ^>=0.6.2.2
@@ -199,11 +236,11 @@ library
 
   if (flag(tui) && !os(windows))
     cpp-options:   -DBRICK
-    build-depends: vty ^>=5.37
+    build-depends: vty ^>=5.39
 
-executable ghcup
+library ghcup-optparse
-  main-is:            Main.hs
+  import:             app-common-depends
-  other-modules:
+  exposed-modules:
     GHCup.OptParse
     GHCup.OptParse.ChangeLog
     GHCup.OptParse.Common
@@ -224,6 +261,40 @@ executable ghcup
     GHCup.OptParse.Upgrade
     GHCup.OptParse.Whereis
 
+  hs-source-dirs:     lib-opt
+  default-language:   Haskell2010
+  default-extensions:
+    LambdaCase
+    MultiWayIf
+    NamedFieldPuns
+    PackageImports
+    RecordWildCards
+    ScopedTypeVariables
+    StrictData
+    TupleSections
+
+  ghc-options:
+    -Wall -fwarn-tabs -fwarn-incomplete-uni-patterns
+    -fwarn-incomplete-record-updates
+
+  build-depends:      ghcup
+
+  if flag(internal-downloader)
+    cpp-options: -DINTERNAL_DOWNLOADER
+
+  if (flag(tui) && !os(windows))
+    cpp-options:   -DBRICK
+
+  if os(windows)
+    cpp-options: -DIS_WINDOWS
+
+  else
+    build-depends: unix ^>=2.7
+
+executable ghcup
+  import:             app-common-depends
+  main-is:            Main.hs
+
   hs-source-dirs:     app/ghcup
   default-language:   Haskell2010
   default-extensions:
@@ -241,41 +312,8 @@ executable ghcup
     -fwarn-incomplete-record-updates -threaded
 
   build-depends:
-    , aeson                  >=1.4
-    , aeson-pretty           ^>=0.8.8
-    , async                  ^>=2.2.3
-    , base                   >=4.12     && <5
-    , bytestring             >=0.10     && <0.12
-    , cabal-install-parsers  >=0.4.5
-    , cabal-plan             ^>=0.7.2
-    , containers             ^>=0.6
-    , deepseq                ^>=1.4
-    , directory              ^>=1.3.6.0
-    , filepath               ^>=1.4.2.1
     , ghcup
-    , haskus-utils-types     ^>=1.5
+    , ghcup-optparse
-    , haskus-utils-variant   ^>=3.2.1
-    , libarchive             ^>=3.0.3.0
-    , megaparsec             >=8.0.0    && <9.3
-    , mtl                    ^>=2.2
-    , optparse-applicative   >=0.15.1.0 && <0.18
-    , pretty                 ^>=1.1.3.1
-    , pretty-terminal        ^>=0.1.0.0
-    , process                ^>=1.6.11.0
-    , resourcet              ^>=1.2.2
-    , safe                   ^>=0.3.18
-    , safe-exceptions        ^>=0.1
-    , tagsoup                ^>=0.14
-    , template-haskell       >=2.7      && <2.20
-    , temporary              ^>=1.3
-    , text                   ^>=2.0
-    , time                   ^>=1.9.3 || ^>=1.10 || ^>=1.11
-    , unordered-containers   ^>=0.2
-    , uri-bytestring         ^>=0.3.2.2
-    , utf8-string            ^>=1.0
-    , vector                 ^>=0.12
-    , versions               >=4.0.1    && <5.1
-    , yaml-streamly          ^>=0.12.0
 
   if flag(internal-downloader)
     cpp-options: -DINTERNAL_DOWNLOADER
@@ -287,7 +325,7 @@ executable ghcup
       , brick         ^>=1.5
       , transformers  ^>=0.5
       , unix          ^>=2.7
-      , vty           ^>=5.37
+      , vty           ^>=5.39
 
   if os(windows)
     cpp-options: -DIS_WINDOWS
@@ -302,7 +340,7 @@ test-suite ghcup-test
   type:               exitcode-stdio-1.0
   main-is:            Main.hs
   build-tool-depends: hspec-discover:hspec-discover -any
-  hs-source-dirs:     test
+  hs-source-dirs:     test/ghcup-test
   other-modules:
     GHCup.ArbitraryTypes
     GHCup.Prelude.File.Posix.TraversalsSpec
@@ -336,13 +374,50 @@ test-suite ghcup-test
     , QuickCheck                ^>=2.14.1
     , quickcheck-arbitrary-adt  ^>=0.3.1.0
     , streamly                  ^>=0.8.2
-    , time                      ^>=1.9.3 || ^>=1.10 || ^>=1.11
     , text                      ^>=2.0
+    , time                      >=1.9.3   && <1.12
     , uri-bytestring            ^>=0.3.2.2
-    , versions                  >=4.0.1   && <5.1
+    , versions                  >=6.0.3   && <6.1
 
   if os(windows)
     cpp-options: -DIS_WINDOWS
 
   else
     build-depends: unix ^>=2.7
+
+test-suite ghcup-optparse-test
+  type:             exitcode-stdio-1.0
+  hs-source-dirs:   test/optparse-test
+  main-is:          Main.hs
+  other-modules:
+    ChangeLogTest
+    CompileTest
+    ConfigTest
+    GCTest
+    InstallTest
+    ListTest
+    OtherCommandTest
+    RmTest
+    RunTest
+    SetTest
+    UnsetTest
+    UpgradeTest
+    Utils
+    WhereisTest
+
+  if os(windows)
+    cpp-options: -DIS_WINDOWS
+
+  default-language: Haskell2010
+  ghc-options:      -Wall
+  build-depends:
+    , base
+    , ghcup
+    , ghcup-optparse
+    , optparse-applicative
+    , tasty
+    , tasty-hunit
+    , template-haskell
+    , text
+    , uri-bytestring
+    , versions

hie.yaml

@@ -5,4 +5,6 @@ cradle:
   - component: "ghcup:exe:ghcup"
     path: ./app/ghcup
   - component: "ghcup:test:ghcup-test"
-    path: ./test
+    path: ./test/ghcup-test
+  - component: "ghcup:test:ghcup-optparse-test"
+    path: ./test/optparse-test

lib-opt/GHCup/OptParse/ChangeLog.hs

@@ -49,7 +49,7 @@ data ChangeLogOptions = ChangeLogOptions
   { clOpen    :: Bool
   , clTool    :: Maybe Tool
   , clToolVer :: Maybe ToolVersion
-  }
+  } deriving (Eq, Show)
 
 
 
@@ -75,7 +75,7 @@ changelogP =
                 e       -> Left e
               )
             )
-            (short 't' <> long "tool" <> metavar "<ghc|cabal|hls|ghcup>" <> help
+            (short 't' <> long "tool" <> metavar "<ghc|cabal|hls|ghcup|stack>" <> help
               "Open changelog for given tool (default: ghc)"
               <> completer toolCompleter
             )

lib-opt/GHCup/OptParse/Common.hs

@@ -48,7 +48,7 @@ import           Data.Maybe
 import           Data.Text                      ( Text )
 import           Data.Time.Calendar             ( Day )
 import           Data.Time.Format               ( parseTimeM, defaultTimeLocale )
-import           Data.Versions           hiding ( str )
+import           Data.Versions
 import           Data.Void
 import qualified Data.Vector      as V
 import           GHC.IO.Exception
@@ -83,6 +83,7 @@ data SetToolVersion = SetGHCVersion GHCTargetVersion
                     | SetToolDay Day
                     | SetRecommended
                     | SetNext
+                    deriving (Eq, Show)
 
 prettyToolVer :: ToolVersion -> String
 prettyToolVer (GHCVersion v')  = T.unpack $ tVerToText v'
@@ -823,7 +824,7 @@ checkForUpdates = do
 
 logGHCPostRm :: (MonadReader env m, HasLog env, MonadIO m) => GHCTargetVersion -> m ()
 logGHCPostRm ghcVer = do
-  cabalStore <- liftIO $ handleIO (\_ -> if isWindows then pure "C:\\cabal\\store" else pure "~/.cabal/store")
+  cabalStore <- liftIO $ handleIO (\_ -> if isWindows then pure "C:\\cabal\\store" else pure "~/.cabal/store or ~/.local/state/cabal/store")
     (runIdentity . CC.cfgStoreDir <$> CC.readConfig)
   let storeGhcDir = cabalStore </> ("ghc-" <> T.unpack (prettyVer $ _tvVersion ghcVer))
   logInfo $ T.pack $ "After removing GHC you might also want to clean up your cabal store at: " <> storeGhcDir

lib-opt/GHCup/OptParse/Compile.hs

@@ -57,6 +57,7 @@ import Text.Read (readEither)
 
 data CompileCommand = CompileGHC GHCCompileOptions
                     | CompileHLS HLSCompileOptions
+                    deriving (Eq, Show)
 
 
 
@@ -78,7 +79,7 @@ data GHCCompileOptions = GHCCompileOptions
   , buildFlavour :: Maybe String
   , buildSystem  :: Maybe BuildSystem
   , isolateDir   :: Maybe FilePath
-  }
+  } deriving (Eq, Show)
 
 
 data HLSCompileOptions = HLSCompileOptions
@@ -93,7 +94,7 @@ data HLSCompileOptions = HLSCompileOptions
   , patches      :: Maybe (Either FilePath [URI])
   , targetGHCs   :: [ToolVersion]
   , cabalArgs    :: [Text]
-  }
+  } deriving (Eq, Show)
 
 
 
@@ -283,7 +284,7 @@ ghcCompileOpts =
             (  short 'i'
             <> long "isolate"
             <> metavar "DIR"
-            <> help "install in an isolated directory instead of the default one, no symlinks to this installation will be made"
+            <> help "install in an isolated absolute directory instead of the default one, no symlinks to this installation will be made"
             <> completer (bashCompleter "directory")
             )
            )
@@ -366,7 +367,7 @@ hlsCompileOpts =
             (  short 'i'
             <> long "isolate"
             <> metavar "DIR"
-            <> help "install in an isolated directory instead of the default one, no symlinks to this installation will be made"
+            <> help "install in an isolated absolute directory instead of the default one, no symlinks to this installation will be made"
             <> completer (bashCompleter "directory")
             )
            )

lib-opt/GHCup/OptParse/Config.hs

@@ -52,6 +52,7 @@ data ConfigCommand
   | SetConfig String (Maybe String)
   | InitConfig
   | AddReleaseChannel Bool URI
+  deriving (Eq, Show)
 
 
 

lib-opt/GHCup/OptParse/GC.hs

@@ -47,7 +47,7 @@ data GCOptions = GCOptions
   , gcHLSNoGHC :: Bool
   , gcCache :: Bool
   , gcTmp :: Bool
-  }
+  } deriving (Eq, Show)
 
 
 

lib-opt/GHCup/OptParse/Install.hs

@@ -54,6 +54,7 @@ data InstallCommand = InstallGHC InstallOptions
                     | InstallCabal InstallOptions
                     | InstallHLS InstallOptions
                     | InstallStack InstallOptions
+                    deriving (Eq, Show)
 
 
 
@@ -70,7 +71,7 @@ data InstallOptions = InstallOptions
   , isolateDir   :: Maybe FilePath
   , forceInstall :: Bool
   , addConfArgs  :: [T.Text]
-  }
+  } deriving (Eq, Show)
 
 
 
@@ -196,7 +197,7 @@ installOpts tool =
            (  short 'i'
            <> long "isolate"
            <> metavar "DIR"
-           <> help "install in an isolated dir instead of the default one"
+           <> help "install in an isolated absolute directory instead of the default one"
            <> completer (bashCompleter "directory")
            )
           )

lib-opt/GHCup/OptParse/List.hs

@@ -27,7 +27,7 @@ import           Data.List                      ( intercalate, sort )
 import           Data.Functor
 import           Data.Maybe
 import           Data.Time.Calendar             ( Day )
-import           Data.Versions           hiding ( str )
+import           Data.Versions
 import           Data.Void
 import           Options.Applicative     hiding ( style )
 import           Prelude                 hiding ( appendFile )
@@ -58,7 +58,7 @@ data ListOptions = ListOptions
   , lHideOld   :: Bool
   , lShowNightly :: Bool
   , lRawFormat :: Bool
-  }
+  } deriving (Eq, Show)
 
 
 

lib-opt/GHCup/OptParse/Rm.hs

@@ -29,7 +29,7 @@ import           Control.Monad.Reader
 import           Control.Monad.Trans.Resource
 import           Data.Functor
 import           Data.Maybe
-import           Data.Versions           hiding ( str )
+import           Data.Versions
 import           Haskus.Utils.Variant.Excepts
 import           Options.Applicative     hiding ( style )
 import           Prelude                 hiding ( appendFile )
@@ -50,6 +50,7 @@ data RmCommand = RmGHC RmOptions
                | RmCabal Version
                | RmHLS Version
                | RmStack Version
+               deriving (Eq, Show)
 
 
 
@@ -61,7 +62,7 @@ data RmCommand = RmGHC RmOptions
 
 data RmOptions = RmOptions
   { ghcVer :: GHCTargetVersion
-  }
+  } deriving (Eq, Show)
 
 
 

lib-opt/GHCup/OptParse/Run.hs

@@ -68,7 +68,7 @@ data RunOptions = RunOptions
   , runBinDir     :: Maybe FilePath
   , runQuick      :: Bool
   , runCOMMAND    :: [String]
-  }
+  } deriving (Eq, Show)
 
 
 

lib-opt/GHCup/OptParse/Set.hs

@@ -28,7 +28,7 @@ import           Control.Monad.Trans.Resource
 import           Data.Either
 import           Data.Functor
 import           Data.Maybe
-import           Data.Versions           hiding ( str )
+import           Data.Versions
 import           GHC.Unicode
 import           Haskus.Utils.Variant.Excepts
 import           Options.Applicative     hiding ( style )
@@ -53,6 +53,7 @@ data SetCommand = SetGHC SetOptions
                 | SetCabal SetOptions
                 | SetHLS SetOptions
                 | SetStack SetOptions
+                deriving (Eq, Show)
 
 
 
@@ -64,7 +65,7 @@ data SetCommand = SetGHC SetOptions
 
 data SetOptions = SetOptions
   { sToolVer :: SetToolVersion
-  }
+  } deriving (Eq, Show)
 
 
 

lib-opt/GHCup/OptParse/UnSet.hs

@@ -48,6 +48,7 @@ data UnsetCommand = UnsetGHC   UnsetOptions
                   | UnsetCabal UnsetOptions
                   | UnsetHLS   UnsetOptions
                   | UnsetStack UnsetOptions
+                  deriving (Eq, Show)
 
 
 
@@ -59,7 +60,7 @@ data UnsetCommand = UnsetGHC   UnsetOptions
 
 data UnsetOptions = UnsetOptions
   { sToolVer :: Maybe T.Text -- target platform triple
-  }
+  } deriving (Eq, Show)
 
 
 
@@ -68,7 +69,7 @@ data UnsetOptions = UnsetOptions
     --[ Parsers ]--
     ---------------
 
-          
+
 unsetParser :: Parser UnsetCommand
 unsetParser =
   subparser
@@ -113,7 +114,14 @@ unsetParser =
   unsetGHCFooter :: String
   unsetGHCFooter = [s|Discussion:
     Unsets the the current GHC version. That means there won't
-    be a ~/.ghcup/bin/ghc anymore.|]
+    be a ~/.ghcup/bin/ghc anymore.
+
+Examples:
+  # unset ghc 
+  ghcup unset ghc
+
+  # unset ghc for the target version
+  ghcup unset ghc armv7-unknown-linux-gnueabihf|]
 
   unsetCabalFooter :: String
   unsetCabalFooter = [s|Discussion:

lib-opt/GHCup/OptParse/Upgrade.hs

@@ -35,7 +35,7 @@ import System.Environment
 import GHCup.Utils
 import System.FilePath
 import GHCup.Types.Optics
-import Data.Versions         hiding (str)
+import Data.Versions
 
 
 
@@ -50,7 +50,7 @@ import Data.Versions         hiding (str)
 data UpgradeOpts = UpgradeInplace
                  | UpgradeAt FilePath
                  | UpgradeGHCupDir
-                 deriving Show
+                 deriving (Eq, Show)
 
 
 

lib-opt/GHCup/OptParse/Whereis.hs

@@ -54,6 +54,7 @@ data WhereisCommand = WhereisTool Tool (Maybe ToolVersion)
                     | WhereisCacheDir
                     | WhereisLogsDir
                     | WhereisConfDir
+                    deriving (Eq, Show)
 
 
 
@@ -66,7 +67,7 @@ data WhereisCommand = WhereisTool Tool (Maybe ToolVersion)
 
 data WhereisOptions = WhereisOptions {
    directory :: Bool
-}
+} deriving (Eq, Show)
 
 
 

lib/GHCup/GHC.hs

@@ -83,6 +83,7 @@ import qualified Text.Megaparsec               as MP
 data GHCVer = SourceDist Version
             | GitDist GitBranch
             | RemoteDist URI
+            deriving (Eq, Show)
 
 
 

lib/GHCup/HLS.hs

@@ -75,6 +75,7 @@ data HLSVer = SourceDist Version
             | GitDist GitBranch
             | HackageDist Version
             | RemoteDist URI
+            deriving (Eq, Show)
 
 
 
@@ -716,8 +717,10 @@ getCabalVersion fp = do
   gpd <- case parseGenericPackageDescriptionMaybe contents of
            Nothing -> fail $ "could not parse cabal file: " <> fp
            Just r -> pure r
-  let tver = (\c -> Version Nothing c [] Nothing)
+  let tver = (\c -> Version Nothing c Nothing Nothing)
-           . NE.fromList . fmap (NE.fromList . (:[]) . digits . fromIntegral)
+           . Chunks
+           . NE.fromList
+           . fmap (Numeric . fromIntegral)
            . versionNumbers
            . pkgVersion
            . package

lib/GHCup/List.hs

@@ -65,7 +65,7 @@ import qualified Data.Text                     as T
 data ListCriteria = ListInstalled  Bool
                   | ListSet        Bool
                   | ListAvailable  Bool
-                  deriving Show
+                  deriving (Eq, Show)
 
 -- | A list result describes a single tool version
 -- and various of its properties.

lib/GHCup/Prelude/MegaParsec.hs

@@ -91,18 +91,16 @@ ghcTargetVerP =
   verP' :: MP.Parsec Void Text Text
   verP' = do
     v <- version'
-    let startsWithDigists =
+    let startsWithDigits =
           and
             . take 3
-            . concatMap
+            . map (\case
-              (map
+                      Numeric  _ -> True
-                (\case
+                      Alphanum _ -> False)
-                  (Digits _) -> True
-                  (Str    _) -> False
-                ) . NE.toList)
             . NE.toList
+            . (\(Chunks nec) -> nec)
             $ _vChunks v
-    if startsWithDigists && isNothing (_vEpoch v)
+    if startsWithDigits && isNothing (_vEpoch v)
       then pure $ prettyVer v
       else fail "Oh"
 

lib/GHCup/Prelude/Version/QQ.hs

@@ -26,36 +26,14 @@ import           GHC.Base
 #endif
 import           Language.Haskell.TH
 import           Language.Haskell.TH.Quote      ( QuasiQuoter(..) )
-import           Language.Haskell.TH.Syntax     ( Lift
+import           Language.Haskell.TH.Syntax     ( dataToExpQ )
-                                                , dataToExpQ
-                                                )
 import qualified Data.Text                     as T
 import qualified Language.Haskell.TH.Syntax    as TH
 
 
-
-deriving instance Data Versioning
-deriving instance Lift Versioning
-deriving instance Data Version
-deriving instance Lift Version
-deriving instance Data SemVer
-deriving instance Lift SemVer
-deriving instance Data Mess
-deriving instance Lift Mess
-deriving instance Data MChunk
-deriving instance Lift MChunk
-deriving instance Data PVP
-deriving instance Lift PVP
-deriving instance Lift VSep
-deriving instance Data VSep
-deriving instance Lift VUnit
-deriving instance Data VUnit
-
 #if !MIN_VERSION_base(4,13,0)
 deriving instance Lift (NonEmpty Word)
-deriving instance Lift (NonEmpty VChunk)
 deriving instance Lift (NonEmpty MChunk)
-deriving instance Lift (NonEmpty VUnit)
 #endif
 
 qq :: (Text -> Q Exp) -> QuasiQuoter

lib/GHCup/Types.hs

@@ -45,7 +45,8 @@ import           Graphics.Vty                   ( Key(..) )
 import qualified Data.ByteString.Lazy          as BL
 import qualified Data.Text                     as T
 import qualified GHC.Generics                  as GHC
-
+import qualified Data.List.NonEmpty            as NE
+import           Data.Foldable                  (foldMap)
 
 #if !defined(BRICK)
 data Key = KEsc  | KChar Char | KBS | KEnter
@@ -156,13 +157,17 @@ instance NFData VersionInfo
 
 
 -- | A tag. These are currently attached to a version of a tool.
-data Tag = Latest
+data Tag = Latest             -- ^ the latest version of a tool (unique per tool)
-         | Recommended
+         | Recommended        -- ^ the recommended version of a tool (unique per tool)
-         | Prerelease
+         | Prerelease         -- ^ denotes a prerelease version
-         | LatestPrerelease
+                              --   (a version should either be 'Prerelease' or
-         | Nightly
+                              --   'LatestPrerelease', but not both)
-         | LatestNightly
+         | LatestPrerelease   -- ^ the latest prerelease (unique per tool)
-         | Base PVP
+         | Nightly            -- ^ denotes a nightly version
+                              --   (a version should either be 'Nightly' or
+                              --   'LatestNightly', but not both)
+         | LatestNightly      -- ^ the latest nightly (unique per tool)
+         | Base PVP           -- ^ the base version shipped with GHC
          | Old                -- ^ old versions are hidden by default in TUI
          | UnknownTag String  -- ^ used for upwardscompat
          deriving (Ord, Eq, GHC.Generic, Show) -- FIXME: manual JSON instance
@@ -637,6 +642,17 @@ data VersionRange = SimpleRange (NonEmpty VersionCmp) -- And
 
 instance NFData VersionRange
 
+instance Pretty VersionCmp where
+  pPrint (VR_gt v) = text "> " <> pPrint v
+  pPrint (VR_gteq v) = text ">= " <> pPrint v
+  pPrint (VR_lt v) = text "< " <> pPrint v
+  pPrint (VR_lteq v) = text "<= " <> pPrint v
+  pPrint (VR_eq v) = text "= " <> pPrint v
+
+instance Pretty VersionRange where
+  pPrint (SimpleRange xs) = foldl1 (\x y -> x <> text " && " <> y) $ NE.map pPrint xs
+  pPrint (OrRange xs vr) = foldMap pPrint xs <> " || " <> pPrint vr
+
 instance Pretty Versioning where
   pPrint = text . T.unpack . prettyV
 
@@ -713,6 +729,7 @@ data ToolVersion = GHCVersion GHCTargetVersion
                  | ToolVersion Version
                  | ToolTag Tag
                  | ToolDay Day
+                 deriving (Eq, Show)
 
 instance Pretty ToolVersion where
   pPrint (GHCVersion v) = pPrint v

lib/GHCup/Types/JSON.hs

@@ -48,10 +48,11 @@ deriveJSON defaultOptions { fieldLabelModifier = removeLensFieldLabel } ''MetaMo
 deriveJSON defaultOptions { fieldLabelModifier = removeLensFieldLabel } ''Architecture
 deriveJSON defaultOptions { fieldLabelModifier = removeLensFieldLabel } ''LinuxDistro
 deriveJSON defaultOptions { fieldLabelModifier = removeLensFieldLabel } ''VSep
-deriveJSON defaultOptions { fieldLabelModifier = removeLensFieldLabel } ''VUnit
 deriveJSON defaultOptions { fieldLabelModifier = removeLensFieldLabel } ''MChunk
 deriveJSON defaultOptions { fieldLabelModifier = removeLensFieldLabel } ''Platform
 deriveJSON defaultOptions { fieldLabelModifier = removeLensFieldLabel } ''Mess
+deriveJSON defaultOptions { fieldLabelModifier = removeLensFieldLabel } ''Chunk
+deriveJSON defaultOptions { fieldLabelModifier = removeLensFieldLabel } ''Release
 deriveJSON defaultOptions { fieldLabelModifier = removeLensFieldLabel } ''SemVer
 deriveJSON defaultOptions { fieldLabelModifier = removeLensFieldLabel } ''Tool
 deriveJSON defaultOptions { fieldLabelModifier = removeLensFieldLabel } ''GlobalTool

lib/GHCup/Utils.hs

@@ -119,11 +119,11 @@ import Data.Time (Day(..), diffDays, addDays)
 -- >>> let lc = LoggerConfig { lcPrintDebug = False, consoleOutter = mempty, fileOutter = mempty, fancyColors = False }
 -- >>> dirs' <- getAllDirs
 -- >>> let installedVersions = [ ([pver|8.10.7|], "-debug+lol", Nothing), ([pver|8.10.4|], "", Nothing), ([pver|8.8.4|], "", Nothing), ([pver|8.8.3|], "", Nothing) ]
--- >>> let settings = Settings True 0 False Never Curl False GHCupURL True GPGNone False
+-- >>> let settings = defaultSettings { cache = True, metaCache = 0, noNetwork = True }
 -- >>> let leanAppState = LeanAppState settings dirs' defaultKeyBindings lc
 -- >>> cwd <- getCurrentDirectory
 -- >>> (Right ref) <- pure $ parseURI strictURIParserOptions $ "file://" <> E.encodeUtf8 (T.pack cwd) <> "/data/metadata/" <> (urlBaseName . view pathL' $ ghcupURL)
--- >>> (VRight r) <- (fmap . fmap) _ghcupDownloads $ flip runReaderT leanAppState . runE @'[DigestError, GPGError, JSONError , DownloadFailed , FileDoesNotExistError] $ liftE $ getBase ref
+-- >>> (VRight r) <- (fmap . fmap) _ghcupDownloads $ flip runReaderT leanAppState . runE @'[DigestError, GPGError, JSONError , DownloadFailed , FileDoesNotExistError, ContentLengthError] $ liftE $ getBase ref
 
 
 
@@ -687,10 +687,8 @@ hlsAllBinaries ver = do
 
 -- | Extract (major, minor) from any version.
 getMajorMinorV :: MonadThrow m => Version -> m (Int, Int)
-getMajorMinorV Version {..} = case _vChunks of
+getMajorMinorV (Version _ (Chunks (Numeric x :| Numeric y : _)) _ _) = pure (fromIntegral x, fromIntegral y)
-  ((Digits x :| []) :| ((Digits y :| []):_)) -> pure (fromIntegral x, fromIntegral y)
+getMajorMinorV _ = throwM $ ParseError "Could not parse X.Y from version"
-  _ -> throwM $ ParseError "Could not parse X.Y from version"
-
 
 matchMajor :: Version -> Int -> Int -> Bool
 matchMajor v' major' minor' = case getMajorMinorV v' of
@@ -732,7 +730,7 @@ getGHCForPVP pvpIn mt = do
 -- | Like 'getGHCForPVP', except with explicit input parameter.
 --
 -- >>> getGHCForPVP' [pver|8|] installedVersions Nothing
--- Just (GHCTargetVersion {_tvTarget = Nothing, _tvVersion = Version {_vEpoch = Nothing, _vChunks = (Digits 8 :| []) :| [Digits 10 :| [],Digits 7 :| []], _vRel = [Str "debug" :| []], _vMeta = Just "lol"}})
+-- Just (GHCTargetVersion {_tvTarget = Nothing, _tvVersion = Version {_vEpoch = Nothing, _vChunks = Chunks (Numeric 8 :| [Numeric 10,Numeric 7]), _vRel = Just (Release (Alphanum "debug" :| [])), _vMeta = Just "lol"}})
 -- >>> fmap prettyShow $ getGHCForPVP' [pver|8.8|] installedVersions Nothing
 -- "Just 8.8.4"
 -- >>> fmap prettyShow $ getGHCForPVP' [pver|8.10.4|] installedVersions Nothing
@@ -758,11 +756,11 @@ getGHCForPVP' pvpIn ghcs' mt = do
 -- | Get the latest available ghc for the given PVP version, which
 -- may only contain parts.
 --
--- >>> (fmap . fmap) fst $ getLatestToolFor GHC [pver|8|] r
+-- >>> (fmap . fmap) (\(p, _, _) -> p) $ getLatestToolFor GHC Nothing [pver|8|] r
 -- Just (PVP {_pComponents = 8 :| [10,7]})
--- >>> (fmap . fmap) fst $ getLatestToolFor GHC [pver|8.8|] r
+-- >>> (fmap . fmap) (\(p, _, _) -> p) $ getLatestToolFor GHC Nothing [pver|8.8|] r
 -- Just (PVP {_pComponents = 8 :| [8,4]})
--- >>> (fmap . fmap) fst $ getLatestToolFor GHC [pver|8.8.4|] r
+-- >>> (fmap . fmap) (\(p, _, _) -> p) $ getLatestToolFor GHC Nothing [pver|8.8.4|] r
 -- Just (PVP {_pComponents = 8 :| [8,4]})
 getLatestToolFor :: MonadThrow m
                  => Tool
@@ -1033,7 +1031,7 @@ applyPatches pdir ddir = do
 
   patches <- liftIO $ quilt `catchIO` (\e ->
     if isDoesNotExistError e || isPermissionError e then
-      lexicographical 
+      lexicographical
     else throwIO e)
   forM_ patches $ \patch' -> applyPatch patch' ddir
 

lib/GHCup/Version.hs

@@ -24,10 +24,10 @@ import qualified Data.Text                     as T
 import qualified Data.Versions as V
 import Control.Exception.Safe (MonadThrow)
 import Data.Text (Text)
-import Data.List.NonEmpty (NonEmpty((:|)))
-import Data.List (intersperse)
 import Control.Monad.Catch (throwM)
 import GHCup.Errors (ParseError(..))
+import Text.Megaparsec
+import Data.Void (Void)
 
 -- | This reflects the API version of the YAML.
 --
@@ -65,44 +65,15 @@ pvpToVersion pvp_ rest =
 -- -- prop> \v -> let (Just (pvp', r)) = versionToPVP v in pvpToVersion pvp' r === Just v
 versionToPVP :: MonadThrow m => V.Version -> m (V.PVP, Text)
 versionToPVP (V.Version (Just _) _ _ _) = throwM $ ParseError "Unexpected epoch"
-versionToPVP v = either (\_ -> (, rest v) <$> alternative v) (pure . (, mempty)) . V.pvp . V.prettyVer $ v
+versionToPVP v = case parse pvp'' "Version->PVP" $ V.prettyVer v of
+  Left _  -> throwM $ ParseError "Couldn't convert Version to PVP"
+  Right r -> pure r
  where
-  alternative :: MonadThrow m => V.Version -> m V.PVP
+   pvp'' :: Parsec Void T.Text (V.PVP, T.Text)
-  alternative v' = case NE.takeWhile isDigit (V._vChunks v') of
+   pvp'' = do
-    [] -> throwM $ ParseError "Couldn't convert Version to PVP"
+     p <- V.pvp'
-    xs -> pure $ pvpFromList (unsafeDigit <$> xs)
+     s <- getParserState
-
+     pure (p, stateInput s)
-  rest :: V.Version -> Text
-  rest (V.Version _ cs pr me) =
-    let chunks = NE.dropWhile isDigit cs
-        ver = intersperse (T.pack ".") . chunksAsT $ chunks
-        me' = maybe [] (\m -> [T.pack "+",m]) me
-        pr' = foldable [] (T.pack "-" :) $ intersperse (T.pack ".") (chunksAsT pr)
-        prefix = case (ver, pr', me') of
-                   (_:_, _, _) -> T.pack "."
-                   _           -> T.pack ""
-    in prefix <> mconcat (ver <> pr' <> me')
-   where
-    chunksAsT :: Functor t => t V.VChunk -> t Text
-    chunksAsT = fmap (foldMap f)
-      where
-        f :: V.VUnit -> Text
-        f (V.Digits i) = T.pack $ show i
-        f (V.Str s)    = s
-
-    foldable :: Foldable f => f b -> (f a -> f b) -> f a -> f b
-    foldable d g f | null f    = d
-                   | otherwise = g f
-
-
-
-  isDigit :: V.VChunk -> Bool
-  isDigit (V.Digits _ :| []) = True
-  isDigit _                = False
-
-  unsafeDigit :: V.VChunk -> Int
-  unsafeDigit (V.Digits x :| []) = fromIntegral x
-  unsafeDigit _ = error "unsafeDigit: wrong input"
 
 pvpFromList :: [Int] -> V.PVP
 pvpFromList = V.PVP . NE.fromList . fmap fromIntegral

scripts/bootstrap/bootstrap-haskell.ps1

@@ -40,10 +40,13 @@ param (
     # Whether to disable use of curl.exe
     [switch]$DisableCurl,
     # The Msys2 version to download (e.g. 20221216)
-    [string]$Msys2Version
+    [string]$Msys2Version,
+    # The Msys2 sha256sum hash
+    [string]$Msys2Hash
 )
 
 $DefaultMsys2Version = "20221216"
+$DefaultMsys2Hash = "18370d32b0264915c97e3d7c618f7b32d48ad80858923883fde5145acd32ca0f"
 
 $Silent = !$Interactive
 
@@ -430,9 +433,12 @@ if (!(Test-Path -Path ('{0}' -f $MsysDir))) {
 	if (!($Msys2Version)) {
 		$Msys2Version = $DefaultMsys2Version
 	}
+	if (!($Msys2Hash)) {
+		$Msys2Hash = $DefaultMsys2Hash
+	}
     Print-Msg -msg ('Downloading Msys2 archive {0}...' -f $Msys2Version)
     $archive = ('msys2-base-x86_64-{0}.sfx.exe' -f $Msys2Version)
-    $msysUrl = ('https://repo.msys2.org/distrib/x86_64/{0}' -f "$archive")
+    $msysUrl = ('https://downloads.haskell.org/ghcup/msys2/{0}' -f "$archive")
     $archivePath = ('{0}\{1}' -f ([IO.Path]::GetTempPath()), "$archive")
 
     if ((Get-Command -Name 'curl.exe' -ErrorAction SilentlyContinue) -and !($DisableCurl)) {
@@ -440,6 +446,11 @@ if (!(Test-Path -Path ('{0}' -f $MsysDir))) {
     } else {
       Get-FileWCSynchronous -url "$msysUrl" -destinationFolder ([IO.Path]::GetTempPath()) -includeStats
     }
+	$Msys2HashChecked = Get-FileHash -Algorithm SHA256 "${archivePath}"
+	if (!($Msys2HashChecked.Hash -eq $Msys2Hash)) {
+		Print-Msg -color Red -msg ("Hashes don't match, got {0}, but expected {1}" -f $Msys2HashChecked, $Msys2Hash)
+		Exit 1
+	}
 
     Print-Msg -msg 'Extracting Msys2 archive...'
     $null = & "$archivePath" '-y' ('-o{0}' -f $GhcupDir)  # Extract
@@ -448,7 +459,7 @@ if (!(Test-Path -Path ('{0}' -f $MsysDir))) {
     Print-Msg -msg 'Processing MSYS2 bash for first time use...'
     Exec "$Bash" '-lc' 'exit'
 
-    Exec "$env:windir\system32\taskkill.exe" /F /FI `"MODULES eq msys-2.0.dll`"
+    Exec "$env:windir\system32\taskkill.exe" /F /FI "MODULES eq msys-2.0.dll"
 
     Print-Msg -msg 'Upgrading full system...'
     Exec "$Bash" '-lc' 'pacman --noconfirm -Syuu'

stack.yaml

@@ -1,4 +1,4 @@
-resolver: lts-20.20
+resolver: lts-20.26
 
 packages:
   - .
@@ -24,6 +24,8 @@ extra-deps:
   - strict-base-0.4.0.0
   - text-2.0.2
   - yaml-streamly-0.12.2
+  - github: fosskers/versions
+    commit: 7bc3355348aac3510771d4622aff09ac38c9924d
 
 flags:
   http-io-streams:

test/ghcup-test/GHCup/Prelude/File/Posix/TraversalsSpec.hs

@@ -24,7 +24,7 @@ spec = do
   -- https://github.com/haskell/ghcup-hs/issues/415
   describe "GHCup.Prelude.File.Posix.Traversals" $ do
     it "readDirEnt" $ do
-      dirstream <- liftIO $ openDirStreamPortable "test/data"
+      dirstream <- liftIO $ openDirStreamPortable "test/ghcup-test/data"
       (dt1, fp1) <- readDirEntPortable dirstream
       (dt2, fp2) <- readDirEntPortable dirstream
       (dt3, fp3) <- readDirEntPortable dirstream

test/ghcup-test/GHCup/Types/JSONSpec.hs

@@ -17,6 +17,6 @@ spec = do
   roundtripAndGoldenSpecsWithSettings (defaultSettings { goldenDirectoryOption = CustomDirectoryName goldenDir }) (Proxy @GHCupInfo)
  where
   goldenDir
-    | isWindows = "test/golden/windows"
+    | isWindows = "test/ghcup-test/golden/windows"
-    | otherwise = "test/golden/unix"
+    | otherwise = "test/ghcup-test/golden/unix"
 

test/optparse-test/ChangeLogTest.hs

@@ -0,0 +1,51 @@
+{-# LANGUAGE TemplateHaskell #-}
+{-# LANGUAGE OverloadedStrings #-}
+
+module ChangeLogTest where
+
+import Test.Tasty
+import GHCup.OptParse
+import Utils
+import Test.Tasty.HUnit
+import Control.Monad.IO.Class
+import GHCup.Types
+import Data.Versions (versionQ)
+
+changeLogTests :: TestTree
+changeLogTests = testGroup "changelog" $ map (uncurry check) checkList
+  where
+    check :: String -> ChangeLogOptions -> TestTree
+    check args expected = testCase args $ do
+      res <- changeLogParseWith (words args)
+      liftIO $ res @?= expected
+
+checkList :: [(String, ChangeLogOptions)]
+checkList =
+  [ ("changelog", ChangeLogOptions False Nothing Nothing)
+  , ("changelog -o", ChangeLogOptions True Nothing Nothing)
+  , ("changelog -t ghc", ChangeLogOptions False (Just GHC) Nothing)
+  , ("changelog -t cabal", ChangeLogOptions False (Just Cabal) Nothing)
+  , ("changelog -t hls", ChangeLogOptions False (Just HLS) Nothing)
+  , ("changelog -t stack", ChangeLogOptions False (Just Stack) Nothing)
+  , ("changelog -t ghcup", ChangeLogOptions False (Just GHCup) Nothing)
+  , ("changelog 9.2", ChangeLogOptions False Nothing
+      (Just $ GHCVersion
+        $ GHCTargetVersion
+          Nothing
+          $(versionQ "9.2"))
+    )
+  , ("changelog recommended", ChangeLogOptions False Nothing (Just $ ToolTag Recommended))
+  , ("changelog -t cabal recommended", ChangeLogOptions False (Just Cabal) (Just $ ToolTag Recommended))
+  , ("changelog -t cabal 3.10.1.0", ChangeLogOptions False (Just Cabal)
+      (Just $ GHCVersion
+        $ GHCTargetVersion
+          Nothing
+          $(versionQ "3.10.1.0"))
+    )
+  , ("changelog 2023-07-22", ChangeLogOptions False Nothing (Just (ToolDay (read "2023-07-22"))))
+  ]
+
+changeLogParseWith :: [String] -> IO ChangeLogOptions
+changeLogParseWith args = do
+  ChangeLog a <- parseWith args
+  pure a

test/optparse-test/CompileTest.hs

@@ -0,0 +1,191 @@
+{-# LANGUAGE OverloadedStrings #-}
+{-# LANGUAGE QuasiQuotes #-}
+{-# LANGUAGE CPP #-}
+{-# LANGUAGE TemplateHaskell #-}
+
+module CompileTest where
+
+import Test.Tasty
+import GHCup.OptParse
+import Utils
+import Data.Versions
+import GHCup.Types
+import URI.ByteString.QQ
+import qualified GHCup.OptParse.Compile as GHC (GHCCompileOptions(..))
+import qualified GHCup.OptParse.Compile as HLS (HLSCompileOptions(..))
+import GHCup.GHC as GHC
+import GHCup.HLS as HLS
+
+
+compileTests :: TestTree
+compileTests = testGroup "compile"
+  $ map (buildTestTree compileParseWith)
+      [ ("ghc", compileGhcCheckList)
+      , ("hls", compileHlsCheckList)
+      ]
+
+mkDefaultGHCCompileOptions :: GHCVer -> Either Version FilePath -> GHCCompileOptions
+mkDefaultGHCCompileOptions target boot =
+  GHCCompileOptions
+    target
+    boot
+    Nothing
+    Nothing
+    (Just $ Right [])
+    Nothing
+    []
+    False
+    Nothing
+    Nothing
+    Nothing
+    Nothing
+
+mkDefaultHLSCompileOptions :: HLSVer -> [ToolVersion] -> HLSCompileOptions
+mkDefaultHLSCompileOptions target ghcs =
+  HLSCompileOptions
+    target
+    Nothing
+    True
+    False
+    (Left False)
+    Nothing
+    Nothing
+    Nothing
+    (Just $ Right [])
+    ghcs
+    []
+
+compileGhcCheckList :: [(String, CompileCommand)]
+compileGhcCheckList = mapSecond CompileGHC
+  [ ("compile ghc -v 9.4.5 -b 9.2.8", baseOptions)
+  , ("compile ghc -g a32db0b -b 9.2.8", mkDefaultGHCCompileOptions
+        (GHC.GitDist $ GitBranch "a32db0b" Nothing)
+        (Left $(versionQ "9.2.8"))
+    )
+  , ("compile ghc -g a32db0b -b 9.2.8 -r https://gitlab.haskell.org/ghc/ghc.git",
+        mkDefaultGHCCompileOptions
+          (GHC.GitDist $ GitBranch "a32db0b" (Just "https://gitlab.haskell.org/ghc/ghc.git"))
+          (Left $(versionQ "9.2.8"))
+    )
+  , ("compile ghc -g a32db0b -r https://gitlab.haskell.org/ghc/ghc.git -b /usr/bin/ghc-9.2.2",
+        mkDefaultGHCCompileOptions
+          (GHC.GitDist $ GitBranch "a32db0b" (Just "https://gitlab.haskell.org/ghc/ghc.git"))
+          (Right "/usr/bin/ghc-9.2.2")
+    )
+  , ("compile ghc --remote-source-dist https://gitlab.haskell.org/ghc/ghc.git -b 9.2.8", mkDefaultGHCCompileOptions
+        (GHC.RemoteDist [uri|https://gitlab.haskell.org/ghc/ghc.git|])
+        (Left $(versionQ "9.2.8"))
+    )
+  , (baseCmd <> "-j20", baseOptions{GHC.jobs = Just 20})
+  , (baseCmd <> "--jobs 10", baseOptions{GHC.jobs = Just 10})
+  , (baseCmd <> "-c build.mk", baseOptions{GHC.buildConfig = Just "build.mk"})
+  , (baseCmd <> "--config build.mk", baseOptions{GHC.buildConfig = Just "build.mk"})
+  , (baseCmd <> "--patch file:///example.patch", baseOptions{GHC.patches = Just $ Right [[uri|file:///example.patch|]]})
+  , (baseCmd <> "-p patch_dir", baseOptions{GHC.patches = Just (Left "patch_dir")})
+  , (baseCmd <> "--patchdir patch_dir", baseOptions{GHC.patches = Just (Left "patch_dir")})
+  , (baseCmd <> "-x armv7-unknown-linux-gnueabihf", baseOptions{GHC.crossTarget = Just "armv7-unknown-linux-gnueabihf"})
+  , (baseCmd <> "--cross-target armv7-unknown-linux-gnueabihf", baseOptions{GHC.crossTarget = Just "armv7-unknown-linux-gnueabihf"})
+  , (baseCmd <> "-- --enable-unregisterised", baseOptions{GHC.addConfArgs = ["--enable-unregisterised"]})
+  , (baseCmd <> "--set", baseOptions{GHC.setCompile = True})
+  , (baseCmd <> "-o 9.4.5-p1", baseOptions{GHC.ovewrwiteVer = Just $(versionQ "9.4.5-p1")})
+  , (baseCmd <> "--overwrite-version 9.4.5-p1", baseOptions{GHC.ovewrwiteVer = Just $(versionQ "9.4.5-p1")})
+  , (baseCmd <> "-f make", baseOptions{GHC.buildFlavour = Just "make"})
+  , (baseCmd <> "--flavour make", baseOptions{GHC.buildFlavour = Just "make"})
+  , (baseCmd <> "--hadrian", baseOptions{GHC.buildSystem = Just Hadrian})
+  , (baseCmd <> "--make", baseOptions{GHC.buildSystem = Just Make})
+#ifdef IS_WINDOWS
+  , (baseCmd <> "-i C:\\\\tmp\\out_dir", baseOptions{GHC.isolateDir = Just "C:\\\\tmp\\out_dir"})
+  , (baseCmd <> "--isolate C:\\\\tmp\\out_dir", baseOptions{GHC.isolateDir = Just "C:\\\\tmp\\out_dir"})
+#else
+  , (baseCmd <> "-i /tmp/out_dir", baseOptions{GHC.isolateDir = Just "/tmp/out_dir"})
+  , (baseCmd <> "--isolate /tmp/out_dir", baseOptions{GHC.isolateDir = Just "/tmp/out_dir"})
+#endif
+  ]
+  where
+    baseCmd :: String
+    baseCmd = "compile ghc -v 9.4.5 -b 9.2.8 "
+
+    baseOptions :: GHCCompileOptions
+    baseOptions =
+      mkDefaultGHCCompileOptions
+        (GHC.SourceDist $(versionQ "9.4.5"))
+        (Left $(versionQ "9.2.8"))
+
+compileHlsCheckList :: [(String, CompileCommand)]
+compileHlsCheckList = mapSecond CompileHLS
+  [ ("compile hls -v 2.0.0.0 --ghc 9.2.8", baseOptions)
+  , ("compile hls --version 2.0.0.0 --ghc 9.2.8", baseOptions)
+  , ("compile hls -g a32db0b --ghc 9.2.8",
+        mkDefaultHLSCompileOptions
+          (HLS.GitDist $ GitBranch {ref = "a32db0b", repo = Nothing})
+          [ghc928]
+    )
+  , ("compile hls --git-ref a32db0b --ghc 9.2.8",
+        mkDefaultHLSCompileOptions
+          (HLS.GitDist $ GitBranch {ref = "a32db0b", repo = Nothing})
+          [ghc928]
+    )
+  , ("compile hls -g a32db0b -r https://github.com/haskell/haskell-language-server.git --ghc 9.2.8",
+        mkDefaultHLSCompileOptions
+          (HLS.GitDist $ GitBranch {ref = "a32db0b", repo = Just "https://github.com/haskell/haskell-language-server.git"})
+          [ghc928]
+    )
+  , ("compile hls -g a32db0b --repository https://github.com/haskell/haskell-language-server.git --ghc 9.2.8",
+        mkDefaultHLSCompileOptions
+          (HLS.GitDist $ GitBranch {ref = "a32db0b", repo = Just "https://github.com/haskell/haskell-language-server.git"})
+          [ghc928]
+    )
+  , ("compile hls --source-dist 2.0.0.0 --ghc 9.2.8",
+        mkDefaultHLSCompileOptions
+          (HLS.SourceDist $(versionQ "2.0.0.0"))
+          [ghc928]
+    )
+  , ("compile hls --remote-source-dist https://github.com/haskell/haskell-language-server/archive/refs/tags/2.0.0.1.tar.gz --ghc 9.2.8",
+        mkDefaultHLSCompileOptions
+          (HLS.RemoteDist [uri|https://github.com/haskell/haskell-language-server/archive/refs/tags/2.0.0.1.tar.gz|])
+          [ghc928]
+    )
+  , ("compile hls -v 2.0.0.0 --ghc latest",
+        mkDefaultHLSCompileOptions
+          (HLS.HackageDist $(versionQ "2.0.0.0"))
+          [ToolTag Latest]
+    )
+  , (baseCmd <> "-j20", baseOptions{HLS.jobs = Just 20})
+  , (baseCmd <> "--jobs 10", baseOptions{HLS.jobs = Just 10})
+  , (baseCmd <> "--no-set", baseOptions{HLS.setCompile = False})
+  , (baseCmd <> "--cabal-update", baseOptions{HLS.updateCabal = True})
+  , (baseCmd <> "-o 2.0.0.0-p1", baseOptions{HLS.ovewrwiteVer = Right $(versionQ "2.0.0.0-p1")})
+  , (baseCmd <> "--overwrite-version 2.0.0.0-p1", baseOptions{HLS.ovewrwiteVer = Right $(versionQ "2.0.0.0-p1")})
+  , (baseCmd <> "--git-describe-version", baseOptions{HLS.ovewrwiteVer = Left True})
+#ifdef IS_WINDOWS
+  , (baseCmd <> "-i C:\\\\tmp\\out_dir", baseOptions{HLS.isolateDir = Just "C:\\\\tmp\\out_dir"})
+  , (baseCmd <> "--isolate C:\\\\tmp\\out_dir", baseOptions{HLS.isolateDir = Just "C:\\\\tmp\\out_dir"})
+#else
+  , (baseCmd <> "-i /tmp/out_dir", baseOptions{HLS.isolateDir = Just "/tmp/out_dir"})
+  , (baseCmd <> "--isolate /tmp/out_dir", baseOptions{HLS.isolateDir = Just "/tmp/out_dir"})
+#endif
+  , (baseCmd <> "--cabal-project file:///tmp/cabal.project", baseOptions{HLS.cabalProject = Just $ Right [uri|file:///tmp/cabal.project|]})
+  , (baseCmd <> "--cabal-project cabal.ghc8107.project", baseOptions{HLS.cabalProject = Just $ Left "cabal.ghc8107.project"})
+  , (baseCmd <> "--cabal-project-local file:///tmp/cabal.project.local", baseOptions{HLS.cabalProjectLocal = Just [uri|file:///tmp/cabal.project.local|]})
+  , (baseCmd <> "--patch file:///example.patch", baseOptions{HLS.patches = Just $ Right [[uri|file:///example.patch|]]})
+  , (baseCmd <> "-p patch_dir", baseOptions{HLS.patches = Just (Left "patch_dir")})
+  , (baseCmd <> "--patchdir patch_dir", baseOptions{HLS.patches = Just (Left "patch_dir")})
+  , (baseCmd <> "-- --enable-tests", baseOptions{HLS.cabalArgs = ["--enable-tests"]})
+  ]
+  where
+    baseCmd :: String
+    baseCmd = "compile hls -v 2.0.0.0 --ghc 9.2.8 "
+
+    baseOptions :: HLSCompileOptions
+    baseOptions =
+      mkDefaultHLSCompileOptions
+        (HLS.HackageDist $(versionQ "2.0.0.0"))
+        [ghc928]
+
+    ghc928 :: ToolVersion
+    ghc928 = GHCVersion $ GHCTargetVersion Nothing $(versionQ "9.2.8")
+
+compileParseWith :: [String] -> IO CompileCommand
+compileParseWith args = do
+  Compile a <- parseWith args
+  pure a

test/optparse-test/ConfigTest.hs

@@ -0,0 +1,34 @@
+{-# LANGUAGE QuasiQuotes #-}
+
+module ConfigTest where
+
+import Test.Tasty
+import Test.Tasty.HUnit
+import GHCup.OptParse
+import Utils
+import Control.Monad.IO.Class
+import URI.ByteString.QQ
+
+configTests :: TestTree
+configTests = testGroup "config" $ map (uncurry check) checkList
+  where
+    check :: String -> ConfigCommand -> TestTree
+    check args expected = testCase args $ do
+      res <- configParseWith (words args)
+      liftIO $ res @?= expected
+
+checkList :: [(String, ConfigCommand)]
+checkList =
+  [ ("config", ShowConfig)
+  , ("config init", InitConfig)
+  , ("config show", ShowConfig)
+  , ("config add-release-channel https://raw.githubusercontent.com/haskell/ghcup-metadata/master/ghcup-prereleases-0.0.7.yaml"
+    , AddReleaseChannel False [uri|https://raw.githubusercontent.com/haskell/ghcup-metadata/master/ghcup-prereleases-0.0.7.yaml|]
+    )
+  , ("config set cache true", SetConfig "cache" (Just "true"))
+  ]
+
+configParseWith :: [String] -> IO ConfigCommand
+configParseWith args = do
+  Config a <- parseWith args
+  pure a

test/optparse-test/GCTest.hs

@@ -0,0 +1,42 @@
+module GCTest where
+
+import Test.Tasty
+import GHCup.OptParse
+import Utils
+
+
+gcTests :: TestTree
+gcTests = buildTestTree gcParseWith ("gc", gcCheckList)
+
+defaultOptions :: GCOptions
+defaultOptions =
+  GCOptions
+    False
+    False
+    False
+    False
+    False
+    False
+
+gcCheckList :: [(String, GCOptions)]
+gcCheckList =
+  [ ("gc", defaultOptions)
+  , ("gc -o", defaultOptions{gcOldGHC = True})
+  , ("gc --ghc-old", defaultOptions{gcOldGHC = True})
+  , ("gc -p", defaultOptions{gcProfilingLibs = True})
+  , ("gc --profiling-libs", defaultOptions{gcProfilingLibs = True})
+  , ("gc -s", defaultOptions{gcShareDir = True})
+  , ("gc --share-dir", defaultOptions{gcShareDir = True})
+  , ("gc -h", defaultOptions{gcHLSNoGHC = True})
+  , ("gc --hls-no-ghc", defaultOptions{gcHLSNoGHC = True})
+  , ("gc -c", defaultOptions{gcCache = True})
+  , ("gc --cache", defaultOptions{gcCache = True})
+  , ("gc -t", defaultOptions{gcTmp = True})
+  , ("gc --tmpdirs", defaultOptions{gcTmp = True})
+  , ("gc -o -p -s -h -c -t", GCOptions True True True True True True)
+  ]
+
+gcParseWith :: [String] -> IO GCOptions
+gcParseWith args = do
+  GC a <- parseWith args
+  pure a

test/optparse-test/InstallTest.hs

@@ -0,0 +1,203 @@
+{-# LANGUAGE CPP               #-}
+{-# LANGUAGE OverloadedStrings #-}
+{-# LANGUAGE QuasiQuotes       #-}
+{-# LANGUAGE TemplateHaskell   #-}
+
+module InstallTest where
+
+import Test.Tasty
+import GHCup.OptParse hiding (HLSCompileOptions(isolateDir))
+import Utils
+import GHCup.Types
+import Data.Versions
+import Data.List.NonEmpty (NonEmpty ((:|)))
+import GHCup.OptParse.Install as Install
+import URI.ByteString.QQ
+
+-- Some interests:
+--   install ghc *won't* select `set as activate version` as default
+--   install cabal *will* select `set as activate version` as default
+--   install hls *will* select `set as activate version` as default
+--   install stack *will* select `set as activate version` as default
+
+installTests :: TestTree
+installTests = testGroup "install"
+  $ map
+      (buildTestTree installParseWith)
+      [ ("old-style", oldStyleCheckList)
+      , ("ghc", installGhcCheckList)
+      , ("cabal", installCabalCheckList)
+      , ("hls", installHlsCheckList)
+      , ("stack", installStackCheckList)
+      ]
+
+defaultOptions :: InstallOptions
+defaultOptions = InstallOptions Nothing Nothing False Nothing False []
+
+-- | Don't set as active version
+mkInstallOptions :: ToolVersion -> InstallOptions
+mkInstallOptions ver = InstallOptions (Just ver) Nothing False Nothing False []
+
+-- | Set as active version
+mkInstallOptions' :: ToolVersion -> InstallOptions
+mkInstallOptions' ver = InstallOptions (Just ver) Nothing True Nothing False []
+
+oldStyleCheckList :: [(String, Either InstallCommand InstallOptions)]
+oldStyleCheckList =
+      ("install", Right defaultOptions)
+    : ("install --set", Right defaultOptions{instSet = True})
+    : ("install --force", Right defaultOptions{forceInstall = True})
+#ifdef IS_WINDOWS
+    : ("install -i C:\\\\", Right defaultOptions{Install.isolateDir = Just "C:\\\\"})
+#else
+    : ("install -i /", Right defaultOptions{Install.isolateDir = Just "/"})
+#endif
+    : ("install -u https://gitlab.haskell.org/ghc/ghc/-/jobs/artifacts/master/raw/ghc-x86_64-linux-fedora33-release.tar.xz head"
+    , Right defaultOptions
+        { instBindist = Just [uri|https://gitlab.haskell.org/ghc/ghc/-/jobs/artifacts/master/raw/ghc-x86_64-linux-fedora33-release.tar.xz|]
+        , instVer = Just $ GHCVersion $ GHCTargetVersion Nothing  $(versionQ "head")
+        }
+    )
+    : mapSecond
+        (Right . mkInstallOptions)
+        [ ("install ghc-9.2", GHCVersion
+              $ GHCTargetVersion
+                (Just "ghc")
+                $(versionQ "9.2")
+          )
+          -- invalid
+        , ("install next", GHCVersion
+              $ GHCTargetVersion
+                Nothing
+                $(versionQ "next")
+          )
+        , ("install latest", ToolTag Latest)
+        , ("install nightly", GHCVersion
+              $ GHCTargetVersion
+                Nothing
+                $(versionQ "nightly")
+          )
+        , ("install recommended", ToolTag Recommended)
+        , ("install prerelease", GHCVersion
+              $ GHCTargetVersion
+                Nothing
+                $(versionQ "prerelease")
+          )
+        , ("install latest-prerelease", ToolTag LatestPrerelease)
+        , ("install latest-nightly", ToolTag LatestNightly)
+        , ("install ghc-javascript-unknown-ghcjs-9.6", GHCVersion
+              $ GHCTargetVersion
+                (Just "ghc-javascript-unknown-ghcjs")
+                $(versionQ "9.6")
+          )
+        , ("install base-4.18", ToolTag (Base (PVP {_pComponents = 4 :| [18]})))
+        , ("install cabal-3.10", GHCVersion
+              $ GHCTargetVersion
+                (Just "cabal")
+                $(versionQ "3.10")
+          )
+        , ("install hls-2.0.0.0", GHCVersion
+              $ GHCTargetVersion
+                (Just "hls")
+                $(versionQ "2.0.0.0")
+          )
+        , ("install stack-2.9.3", GHCVersion
+              $ GHCTargetVersion
+                (Just "stack")
+                $(versionQ "2.9.3")
+          )
+        ]
+
+installGhcCheckList :: [(String, Either InstallCommand InstallOptions)]
+installGhcCheckList =
+  ("install ghc", Left $ InstallGHC defaultOptions)
+  : mapSecond (Left . InstallGHC . mkInstallOptions)
+    [ ("install ghc 9.2", GHCVersion
+          $ GHCTargetVersion
+            Nothing
+            $(versionQ "9.2")
+      )
+    , ("install ghc next", GHCVersion
+          $ GHCTargetVersion
+            Nothing
+            $(versionQ "next")
+      )
+    , ("install ghc latest", ToolTag Latest)
+    , ("install ghc nightly", GHCVersion
+          $ GHCTargetVersion
+            Nothing
+            $(versionQ "nightly")
+      )
+    , ("install ghc recommended", ToolTag Recommended)
+    , ("install ghc prerelease", GHCVersion
+          $ GHCTargetVersion
+            Nothing
+            $(versionQ "prerelease")
+      )
+    , ("install ghc latest-prerelease", ToolTag LatestPrerelease)
+    , ("install ghc latest-nightly", ToolTag LatestNightly)
+    , ("install ghc javascript-unknown-ghcjs-9.6", GHCVersion
+          $ GHCTargetVersion
+            (Just "javascript-unknown-ghcjs")
+            $(versionQ "9.6")
+      )
+    , ("install ghc base-4.18", ToolTag (Base (PVP {_pComponents = 4 :| [18]})))
+    , ("install ghc ghc-9.2", GHCVersion
+          $ GHCTargetVersion
+            (Just "ghc")
+            $(versionQ "9.2")
+      )
+    ]
+
+installCabalCheckList :: [(String, Either InstallCommand InstallOptions)]
+installCabalCheckList =
+  ("install cabal", Left $ InstallCabal defaultOptions{instSet = True})
+  : mapSecond (Left . InstallCabal . mkInstallOptions')
+    [ ("install cabal 3.10", ToolVersion $(versionQ "3.10"))
+    , ("install cabal next", ToolVersion $(versionQ "next"))
+    , ("install cabal latest", ToolTag Latest)
+    , ("install cabal nightly", ToolVersion $(versionQ "nightly"))
+    , ("install cabal recommended", ToolTag Recommended)
+    , ("install cabal prerelease", ToolVersion $(versionQ "prerelease"))
+    , ("install cabal latest-prerelease", ToolTag LatestPrerelease)
+    , ("install cabal latest-nightly", ToolTag LatestNightly)
+    , ("install cabal base-4.18", ToolTag (Base (PVP {_pComponents = 4 :| [18]})))
+    , ("install cabal cabal-3.10", ToolVersion $(versionQ "cabal-3.10"))
+    ]
+
+installHlsCheckList :: [(String, Either InstallCommand InstallOptions)]
+installHlsCheckList =
+  ("install hls", Left $ InstallHLS defaultOptions{instSet = True})
+  : mapSecond (Left . InstallHLS . mkInstallOptions')
+    [ ("install hls 3.10", ToolVersion $(versionQ "3.10"))
+    , ("install hls next", ToolVersion $(versionQ "next"))
+    , ("install hls latest", ToolTag Latest)
+    , ("install hls nightly", ToolVersion $(versionQ "nightly"))
+    , ("install hls recommended", ToolTag Recommended)
+    , ("install hls prerelease", ToolVersion $(versionQ "prerelease"))
+    , ("install hls latest-prerelease", ToolTag LatestPrerelease)
+    , ("install hls latest-nightly", ToolTag LatestNightly)
+    , ("install hls base-4.18", ToolTag (Base (PVP {_pComponents = 4 :| [18]})))
+    , ("install hls hls-2.0", ToolVersion $(versionQ "hls-2.0"))
+    ]
+
+installStackCheckList :: [(String, Either InstallCommand InstallOptions)]
+installStackCheckList =
+  ("install stack", Left $ InstallStack defaultOptions{instSet = True})
+  : mapSecond (Left . InstallStack . mkInstallOptions')
+    [ ("install stack 3.10", ToolVersion $(versionQ "3.10"))
+    , ("install stack next", ToolVersion $(versionQ "next"))
+    , ("install stack latest", ToolTag Latest)
+    , ("install stack nightly", ToolVersion $(versionQ "nightly"))
+    , ("install stack recommended", ToolTag Recommended)
+    , ("install stack prerelease", ToolVersion $(versionQ "prerelease"))
+    , ("install stack latest-prerelease", ToolTag LatestPrerelease)
+    , ("install stack latest-nightly", ToolTag LatestNightly)
+    , ("install stack base-4.18", ToolTag (Base (PVP {_pComponents = 4 :| [18]})))
+    , ("install stack stack-2.9", ToolVersion $(versionQ "stack-2.9"))
+    ]
+
+installParseWith :: [String] -> IO (Either InstallCommand InstallOptions)
+installParseWith args = do
+  Install a <- parseWith args
+  pure a

test/optparse-test/ListTest.hs

@@ -0,0 +1,46 @@
+module ListTest where
+
+import Test.Tasty
+import GHCup.OptParse
+import Utils
+import GHCup.List
+import GHCup.Types
+
+
+listTests :: TestTree
+listTests = buildTestTree listParseWith ("list", listCheckList)
+
+defaultOptions :: ListOptions
+defaultOptions = ListOptions Nothing Nothing Nothing Nothing False False False
+
+listCheckList :: [(String, ListOptions)]
+listCheckList =
+  [ ("list", defaultOptions)
+  , ("list -t ghc", defaultOptions{loTool = Just GHC})
+  , ("list -t cabal", defaultOptions{loTool = Just Cabal})
+  , ("list -t hls", defaultOptions{loTool = Just HLS})
+  , ("list -t stack", defaultOptions{loTool = Just Stack})
+  , ("list -c installed", defaultOptions{lCriteria = Just $ ListInstalled True})
+  , ("list -c +installed", defaultOptions{lCriteria = Just $ ListInstalled True})
+  , ("list -c -installed", defaultOptions{lCriteria = Just $ ListInstalled False})
+  , ("list -c set", defaultOptions{lCriteria = Just $ ListSet True})
+  , ("list -c +set", defaultOptions{lCriteria = Just $ ListSet True})
+  , ("list -c -set", defaultOptions{lCriteria = Just $ ListSet False})
+  , ("list -c available", defaultOptions{lCriteria = Just $ ListAvailable True})
+  , ("list -c +available", defaultOptions{lCriteria = Just $ ListAvailable True})
+  , ("list -c -available", defaultOptions{lCriteria = Just $ ListAvailable False})
+  , ("list -s 2023-07-22", defaultOptions{lFrom = Just $ read "2023-07-22"})
+  , ("list -u 2023-07-22", defaultOptions{lTo = Just $ read "2023-07-22"})
+  , ("list --since 2023-07-22 --until 2023-07-22", defaultOptions{lFrom = Just $ read "2023-07-22", lTo = Just $ read "2023-07-22"})
+  , ("list -o", defaultOptions{lHideOld = True})
+  , ("list --hide-old", defaultOptions{lHideOld = True})
+  , ("list -n", defaultOptions{lShowNightly = True})
+  , ("list --show-nightly", defaultOptions{lShowNightly = True})
+  , ("list -r", defaultOptions{lRawFormat = True})
+  , ("list --raw-format", defaultOptions{lRawFormat = True})
+  ]
+
+listParseWith :: [String] -> IO ListOptions
+listParseWith args = do
+  List a <- parseWith args
+  pure a

test/optparse-test/Main.hs

@@ -0,0 +1,33 @@
+module Main where
+
+import Test.Tasty
+import qualified SetTest
+import qualified OtherCommandTest
+import qualified ChangeLogTest
+import qualified ConfigTest
+import qualified InstallTest
+import qualified UnsetTest
+import qualified RmTest
+import qualified ListTest
+import qualified UpgradeTest
+import qualified CompileTest
+import qualified WhereisTest
+import qualified GCTest
+import qualified RunTest
+
+main :: IO ()
+main = defaultMain $ testGroup "ghcup"
+  [ SetTest.setTests
+  , OtherCommandTest.otherCommandTests
+  , ChangeLogTest.changeLogTests
+  , ConfigTest.configTests
+  , InstallTest.installTests
+  , UnsetTest.unsetTests
+  , RmTest.rmTests
+  , ListTest.listTests
+  , UpgradeTest.upgradeTests
+  , CompileTest.compileTests
+  , WhereisTest.whereisTests
+  , GCTest.gcTests
+  , RunTest.runTests
+  ]

test/optparse-test/OtherCommandTest.hs

@@ -0,0 +1,38 @@
+module OtherCommandTest where
+
+import Test.Tasty
+import Test.Tasty.HUnit
+import GHCup.OptParse
+import Utils
+import Control.Monad.IO.Class
+
+otherCommandTests :: TestTree
+otherCommandTests = testGroup "other command"
+  [ testCase "debug-info" $ do
+      res <- parseWith ["debug-info"]
+      liftIO $ assertBool "debug-info parse failed" (isDInfo res)
+  , testCase "tool-requirements" $ do
+      ToolRequirements opt <- parseWith ["tool-requirements"]
+      liftIO $ tlrRaw opt @?= False
+  , testCase "tool-requirements -r" $ do
+      ToolRequirements opt <- parseWith ["tool-requirements", "--raw-format"]
+      liftIO $ tlrRaw opt @?= True
+  , testCase "nuke" $ do
+      res <- parseWith ["nuke"]
+      liftIO $ assertBool "nuke parse failed" (isNuke res)
+  , testCase "test ghc" $ do
+      res <- parseWith ["test", "ghc"]
+      liftIO $ assertBool "test parse failed" (isTest res)
+  ]
+
+isDInfo :: Command -> Bool
+isDInfo DInfo = True
+isDInfo _     = False
+
+isNuke :: Command -> Bool
+isNuke Nuke = True
+isNuke _    = False
+
+isTest :: Command -> Bool
+isTest (Test _) = True
+isTest _        = False

test/optparse-test/RmTest.hs

@@ -0,0 +1,62 @@
+{-# LANGUAGE OverloadedStrings #-}
+{-# LANGUAGE TemplateHaskell   #-}
+
+module RmTest where
+
+import Test.Tasty
+import GHCup.OptParse
+import Utils
+import GHCup.Types
+import Data.Versions
+
+
+rmTests :: TestTree
+rmTests =
+  testGroup "rm"
+    $ map (buildTestTree rmParseWith)
+        [ ("old-style", oldStyleCheckList)
+        , ("ghc", rmGhcCheckList)
+        , ("cabal", rmCabalCheckList)
+        , ("hls", rmHlsCheckList)
+        , ("stack", rmStackCheckList)
+        ]
+
+oldStyleCheckList :: [(String, Either RmCommand RmOptions)]
+oldStyleCheckList = mapSecond (Right . RmOptions)
+  [ -- failed with ("rm", xxx)
+    ("rm 9.2.8", mkTVer $(versionQ "9.2.8"))
+  , ("rm ghc-9.2.8",  GHCTargetVersion (Just "ghc") $(versionQ "9.2.8"))
+  ]
+
+rmGhcCheckList :: [(String, Either RmCommand RmOptions)]
+rmGhcCheckList = mapSecond (Left . RmGHC . RmOptions)
+  [ -- failed with ("rm ghc", xxx)
+    ("rm ghc 9.2.8", mkTVer $(versionQ "9.2.8"))
+  , ("rm ghc ghc-9.2.8",  GHCTargetVersion (Just "ghc") $(versionQ "9.2.8"))
+  ]
+
+rmCabalCheckList :: [(String, Either RmCommand RmOptions)]
+rmCabalCheckList = mapSecond (Left . RmCabal)
+  [ -- failed with ("rm cabal", xxx)
+    ("rm cabal 3.10", $(versionQ "3.10"))
+  , ("rm cabal cabal-3.10", $(versionQ "cabal-3.10"))
+  ]
+
+rmHlsCheckList :: [(String, Either RmCommand RmOptions)]
+rmHlsCheckList = mapSecond (Left . RmHLS)
+  [ -- failed with ("rm hls", xxx)
+    ("rm hls 2.0", $(versionQ "2.0"))
+  , ("rm hls hls-2.0", $(versionQ "hls-2.0"))
+  ]
+
+rmStackCheckList :: [(String, Either RmCommand RmOptions)]
+rmStackCheckList = mapSecond (Left . RmStack)
+  [ -- failed with ("rm stack", xxx)
+    ("rm stack 2.9.1", $(versionQ "2.9.1"))
+  , ("rm stack stack-2.9.1", $(versionQ "stack-2.9.1"))
+  ]
+
+rmParseWith :: [String] -> IO (Either RmCommand RmOptions)
+rmParseWith args = do
+  Rm a <- parseWith args
+  pure a

test/optparse-test/RunTest.hs

@@ -0,0 +1,68 @@
+{-# LANGUAGE OverloadedStrings #-}
+{-# LANGUAGE CPP               #-}
+{-# LANGUAGE TemplateHaskell   #-}
+
+module RunTest where
+
+import Test.Tasty
+import GHCup.OptParse
+import Utils
+import GHCup.Types
+import Data.Versions (versionQ)
+
+
+runTests :: TestTree
+runTests = buildTestTree runParseWith ("run", runCheckList)
+
+defaultOptions :: RunOptions
+defaultOptions =
+  RunOptions
+    False
+    False
+    False
+    Nothing
+    Nothing
+    Nothing
+    Nothing
+    Nothing
+    False
+    []
+
+runCheckList :: [(String, RunOptions)]
+runCheckList =
+  [ ("run", defaultOptions)
+  , ("run -a", defaultOptions{runAppendPATH = True})
+  , ("run --append", defaultOptions{runAppendPATH = True})
+  , ("run -i", defaultOptions{runInstTool' = True})
+  , ("run --install", defaultOptions{runInstTool' = True})
+  , ("run -m", defaultOptions{runMinGWPath = True})
+  , ("run --mingw-path", defaultOptions{runMinGWPath = True})
+  , ("run --ghc 9.2.8", defaultOptions{runGHCVer = Just $ GHCVersion $ mkTVer $(versionQ "9.2.8")})
+  , ("run --ghc latest", defaultOptions{runGHCVer = Just $ ToolTag Latest})
+  , ("run --cabal 3.10", defaultOptions{runCabalVer = Just $ ToolVersion $(versionQ "3.10")})
+  , ("run --hls 2.0", defaultOptions{runHLSVer = Just $ ToolVersion $(versionQ "2.0")})
+  , ("run --stack 2.9", defaultOptions{runStackVer = Just $ ToolVersion $(versionQ "2.9") })
+#ifdef IS_WINDOWS
+  , ("run -b C:\\\\tmp\\dir", defaultOptions{runBinDir = Just "C:\\\\tmp\\dir"})
+  , ("run --bindir C:\\\\tmp\\dir", defaultOptions{runBinDir = Just "C:\\\\tmp\\dir"})
+#else
+  , ("run -b /tmp/dir", defaultOptions{runBinDir = Just "/tmp/dir"})
+  , ("run --bindir /tmp/dir", defaultOptions{runBinDir = Just "/tmp/dir"})
+#endif
+  , ("run -q", defaultOptions{runQuick = True})
+  , ("run --quick", defaultOptions{runQuick = True})
+  , ("run --ghc latest --cabal 3.10 --stack 2.9 --hls 2.0 --install",
+        defaultOptions
+          { runGHCVer = Just $ ToolTag Latest
+          , runCabalVer = Just $ ToolVersion $(versionQ "3.10")
+          , runHLSVer = Just $ ToolVersion $(versionQ "2.0")
+          , runStackVer = Just $ ToolVersion $(versionQ "2.9")
+          , runInstTool' = True
+          }
+    )
+  ]
+
+runParseWith :: [String] -> IO RunOptions
+runParseWith args = do
+  Run a <- parseWith args
+  pure a

test/optparse-test/SetTest.hs

@@ -0,0 +1,156 @@
+{-# LANGUAGE OverloadedStrings #-}
+{-# LANGUAGE TemplateHaskell #-}
+
+module SetTest where
+
+import GHCup.OptParse
+import Test.Tasty
+import GHCup.Types
+import Data.Versions
+import Data.List.NonEmpty (NonEmpty ((:|)))
+import Utils
+
+setTests :: TestTree
+setTests =
+  testGroup "set"
+    $ map
+        (buildTestTree setParseWith)
+        [ ("old-style", oldStyleCheckList)
+        , ("ghc", setGhcCheckList)
+        , ("cabal", setCabalCheckList)
+        , ("hls", setHlsCheckList)
+        , ("stack", setStackCheckList)
+        ]
+
+oldStyleCheckList :: [(String, Either SetCommand SetOptions)]
+oldStyleCheckList = mapSecond (Right . SetOptions)
+  [ ("set", SetRecommended)
+  , ("set ghc-9.2", SetGHCVersion
+          $ GHCTargetVersion
+            (Just "ghc")
+            $(versionQ "9.2")
+    )
+  , ("set next", SetNext)
+  , ("set latest", SetToolTag Latest)
+  , ("set nightly", SetGHCVersion
+          $ GHCTargetVersion
+            Nothing
+            $(versionQ "nightly")
+    )
+    -- different from `set`
+  , ("set recommended", SetToolTag Recommended)
+  , ("set prerelease", SetGHCVersion
+          $ GHCTargetVersion
+            Nothing
+            $(versionQ "prerelease")
+    )
+  , ("set latest-prerelease", SetToolTag LatestPrerelease)
+  , ("set latest-nightly", SetToolTag LatestNightly)
+  , ("set ghc-javascript-unknown-ghcjs-9.6", SetGHCVersion
+          $ GHCTargetVersion
+            (Just "ghc-javascript-unknown-ghcjs")
+            $(versionQ "9.6")
+    )
+  , ("set base-4.18", SetToolTag (Base (PVP {_pComponents = 4 :| [18]})))
+  , ("set cabal-3.10", SetGHCVersion
+          $ GHCTargetVersion
+            (Just "cabal")
+            $(versionQ "3.10")
+    )
+  , ("set hls-2.0.0.0", SetGHCVersion
+        $ GHCTargetVersion
+            (Just "hls")
+            $(versionQ "2.0.0.0")
+    )
+  , ("set stack-2.9.3", SetGHCVersion
+        $ GHCTargetVersion
+            (Just "stack")
+            $(versionQ "2.9.3")
+    )
+  ]
+
+setGhcCheckList :: [(String, Either SetCommand SetOptions)]
+setGhcCheckList = mapSecond (Left . SetGHC . SetOptions)
+  [ ("set ghc", SetRecommended)
+  , ("set ghc 9.2", SetGHCVersion
+        $ GHCTargetVersion
+          Nothing
+          $(versionQ "9.2")
+    )
+  , ("set ghc next", SetNext)
+  , ("set ghc latest", SetToolTag Latest)
+  , ("set ghc nightly", SetGHCVersion
+        $ GHCTargetVersion
+          Nothing
+          $(versionQ "nightly")
+    )
+  , ("set ghc recommended", SetToolTag Recommended)
+  , ("set ghc prerelease", SetGHCVersion
+        $ GHCTargetVersion
+          Nothing
+          $(versionQ "prerelease")
+    )
+  , ("set ghc latest-prerelease", SetToolTag LatestPrerelease)
+  , ("set ghc latest-nightly", SetToolTag LatestNightly)
+  , ("set ghc javascript-unknown-ghcjs-9.6", SetGHCVersion
+        $ GHCTargetVersion
+          (Just "javascript-unknown-ghcjs")
+          $(versionQ "9.6")
+    )
+  , ("set ghc base-4.18", SetToolTag (Base (PVP {_pComponents = 4 :| [18]})))
+  , ("set ghc ghc-9.2", SetGHCVersion
+        $ GHCTargetVersion
+          (Just "ghc")
+          $(versionQ "9.2")
+    )
+  ]
+
+setCabalCheckList :: [(String, Either SetCommand SetOptions)]
+setCabalCheckList = mapSecond (Left . SetCabal . SetOptions)
+  [ ("set cabal", SetRecommended)
+  , ("set cabal 3.10", SetToolVersion $(versionQ "3.10"))
+  , ("set cabal next", SetNext)
+  , ("set cabal latest", SetToolTag Latest)
+  , ("set cabal nightly", SetToolVersion $(versionQ "nightly"))
+  , ("set cabal recommended", SetToolTag Recommended)
+  , ("set cabal prerelease", SetToolVersion $(versionQ "prerelease"))
+  , ("set cabal latest-prerelease", SetToolTag LatestPrerelease)
+  , ("set cabal latest-nightly", SetToolTag LatestNightly)
+  , ("set cabal base-4.18", SetToolTag (Base (PVP {_pComponents = 4 :| [18]})))
+  , ("set cabal cabal-3.10", SetToolVersion $(versionQ "cabal-3.10"))
+  ]
+
+setHlsCheckList :: [(String, Either SetCommand SetOptions)]
+setHlsCheckList = mapSecond (Left . SetHLS . SetOptions)
+  [ ("set hls", SetRecommended)
+  , ("set hls 2.0", SetToolVersion $(versionQ "2.0"))
+  , ("set hls next", SetNext)
+  , ("set hls latest", SetToolTag Latest)
+  , ("set hls nightly", SetToolVersion $(versionQ "nightly"))
+  , ("set hls recommended", SetToolTag Recommended)
+  , ("set hls prerelease", SetToolVersion $(versionQ "prerelease"))
+  , ("set hls latest-prerelease", SetToolTag LatestPrerelease)
+  , ("set hls latest-nightly", SetToolTag LatestNightly)
+  , ("set hls base-4.18", SetToolTag (Base (PVP {_pComponents = 4 :| [18]})))
+  , ("set hls hls-2.0", SetToolVersion $(versionQ "hls-2.0"))
+  ]
+
+setStackCheckList :: [(String, Either SetCommand SetOptions)]
+setStackCheckList = mapSecond (Left . SetStack . SetOptions)
+  [ ("set stack", SetRecommended)
+  , ("set stack 2.9", SetToolVersion $(versionQ "2.9"))
+  , ("set stack next", SetNext)
+  , ("set stack latest", SetToolTag Latest)
+  , ("set stack nightly", SetToolVersion $(versionQ "nightly"))
+  , ("set stack recommended", SetToolTag Recommended)
+  , ("set stack prerelease", SetToolVersion $(versionQ "prerelease"))
+  , ("set stack latest-prerelease", SetToolTag LatestPrerelease)
+  , ("set stack latest-nightly", SetToolTag LatestNightly)
+  , ("set stack base-4.18", SetToolTag (Base (PVP {_pComponents = 4 :| [18]})))
+  , ("set stack stack-2.9", SetToolVersion $(versionQ "stack-2.9"))
+  ]
+
+setParseWith :: [String] -> IO (Either SetCommand SetOptions)
+setParseWith args = do
+  Set a <- parseWith args
+  pure a

test/optparse-test/UnsetTest.hs

@@ -0,0 +1,50 @@
+{-# LANGUAGE OverloadedStrings #-}
+
+module UnsetTest where
+
+import Test.Tasty
+import GHCup.OptParse
+import Utils
+
+
+unsetTests :: TestTree
+unsetTests =
+  testGroup "unset"
+    $ map (buildTestTree unsetParseWith)
+        [ ("ghc", unsetGhcCheckList)
+        , ("cabal", unsetCabalCheckList)
+        , ("hls", unsetHlsCheckList)
+        , ("stack", unsetStackCheckList)
+        ]
+
+unsetGhcCheckList :: [(String, UnsetCommand)]
+unsetGhcCheckList = mapSecond (UnsetGHC . UnsetOptions)
+  [ ("unset ghc", Nothing)
+  , ("unset ghc armv7-unknown-linux-gnueabihf", Just "armv7-unknown-linux-gnueabihf")
+  ]
+
+unsetCabalCheckList :: [(String, UnsetCommand)]
+unsetCabalCheckList = mapSecond (UnsetCabal . UnsetOptions)
+  [ ("unset cabal", Nothing)
+    -- This never used
+  , ("unset cabal armv7-unknown-linux-gnueabihf", Just "armv7-unknown-linux-gnueabihf")
+  ]
+
+unsetHlsCheckList :: [(String, UnsetCommand)]
+unsetHlsCheckList = mapSecond (UnsetHLS . UnsetOptions)
+  [ ("unset hls", Nothing)
+    -- This never used
+  , ("unset hls armv7-unknown-linux-gnueabihf", Just "armv7-unknown-linux-gnueabihf")
+  ]
+
+unsetStackCheckList :: [(String, UnsetCommand)]
+unsetStackCheckList = mapSecond (UnsetStack . UnsetOptions)
+  [ ("unset stack", Nothing)
+    -- This never used
+  , ("unset stack armv7-unknown-linux-gnueabihf", Just "armv7-unknown-linux-gnueabihf")
+  ]
+
+unsetParseWith :: [String] -> IO UnsetCommand
+unsetParseWith args = do
+  UnSet a <- parseWith args
+  pure a

test/optparse-test/UpgradeTest.hs

@@ -0,0 +1,38 @@
+{-# LANGUAGE TupleSections #-}
+
+module UpgradeTest where
+
+import Test.Tasty
+import GHCup.OptParse
+import Utils
+
+
+upgradeTests :: TestTree
+upgradeTests = buildTestTree upgradeParseWith ("upgrade", upgradeCheckList)
+
+type FullUpgradeOpts =
+  ( UpgradeOpts
+  , Bool -- ^Force update
+  , Bool -- ^Fails after upgrading if the upgraded ghcup binary is shadowed by something else in PATH (useful for CI)
+  )
+
+mkDefaultOptions :: UpgradeOpts -> FullUpgradeOpts
+mkDefaultOptions = (, False, False)
+
+upgradeCheckList :: [(String, FullUpgradeOpts)]
+upgradeCheckList =
+  [ ("upgrade", mkDefaultOptions UpgradeGHCupDir)
+  , ("upgrade -f", (UpgradeGHCupDir, True, False))
+  , ("upgrade --force", (UpgradeGHCupDir, True, False))
+  , ("upgrade --fail-if-shadowed", (UpgradeGHCupDir, False, True))
+  , ("upgrade -i", mkDefaultOptions UpgradeInplace)
+  , ("upgrade --inplace", mkDefaultOptions UpgradeInplace)
+  , ("upgrade -t ~", mkDefaultOptions $ UpgradeAt "~")
+  , ("upgrade --target ~", mkDefaultOptions $ UpgradeAt "~")
+  , ("upgrade -t ~ -f", (UpgradeAt "~", True, False))
+  ]
+
+upgradeParseWith :: [String] -> IO FullUpgradeOpts
+upgradeParseWith args = do
+  Upgrade a b c <- parseWith args
+  pure (a, b, c)

test/optparse-test/Utils.hs

@@ -0,0 +1,34 @@
+{-# OPTIONS_GHC -Wno-incomplete-uni-patterns #-}
+module Utils where
+
+import GHCup.OptParse as GHCup
+import Options.Applicative
+import Data.Bifunctor
+import Test.Tasty
+import Test.Tasty.HUnit
+import Control.Monad.IO.Class
+
+parseWith :: [String] -> IO Command
+parseWith args =
+  optCommand <$> handleParseResult
+    (execParserPure defaultPrefs (info GHCup.opts fullDesc) args)
+
+padLeft :: Int -> String -> String
+padLeft desiredLength s = padding ++ s
+  where padding = replicate (desiredLength - length s) ' '
+
+mapSecond :: (b -> c) -> [(a,b)] -> [(a,c)]
+mapSecond = map . second
+
+buildTestTree
+  :: (Eq a, Show a)
+  => ([String] -> IO a) -- ^ The parse function
+  -> (String, [(String, a)]) -- ^ The check list @(test group, [(cli command, expected value)])@
+  -> TestTree
+buildTestTree parse (title, checkList) =
+  testGroup title
+    $ zipWith (uncurry . check) [1 :: Int ..] checkList
+  where
+    check idx args expected = testCase (padLeft 2 (show idx) ++ "." ++ args) $ do
+      res <- parse (words args)
+      liftIO $ res @?= expected

test/optparse-test/WhereisTest.hs

@@ -0,0 +1,42 @@
+{-# LANGUAGE OverloadedStrings #-}
+{-# LANGUAGE TemplateHaskell #-}
+
+module WhereisTest where
+
+import Test.Tasty
+import GHCup.OptParse
+import Utils
+import GHCup.Types
+import Data.Versions (versionQ)
+
+whereisTests :: TestTree
+whereisTests = buildTestTree whereisParseWith ("whereis", whereisCheckList)
+
+whereisCheckList :: [(String, (WhereisOptions, WhereisCommand))]
+whereisCheckList = concatMap mk
+  [ ("whereis ghc", WhereisTool GHC Nothing)
+  , ("whereis ghc 9.2.8", WhereisTool GHC (Just $ GHCVersion $ mkTVer $(versionQ "9.2.8")))
+  , ("whereis ghc ghc-9.2.8", WhereisTool GHC (Just $ GHCVersion $ GHCTargetVersion (Just "ghc") $(versionQ "9.2.8")))
+  , ("whereis ghc latest", WhereisTool GHC (Just $ ToolTag Latest))
+  , ("whereis cabal", WhereisTool Cabal Nothing)
+  , ("whereis hls", WhereisTool HLS Nothing)
+  , ("whereis stack", WhereisTool Stack Nothing)
+  , ("whereis ghcup", WhereisTool GHCup Nothing)
+  , ("whereis basedir", WhereisBaseDir)
+  , ("whereis bindir", WhereisBinDir)
+  , ("whereis cachedir", WhereisCacheDir)
+  , ("whereis logsdir", WhereisLogsDir)
+  , ("whereis confdir", WhereisConfDir)
+  ]
+  where
+    mk :: (String, WhereisCommand) -> [(String, (WhereisOptions, WhereisCommand))]
+    mk (cmd, res) =
+      [ (cmd, (WhereisOptions False, res))
+      , (cmd <> " -d", (WhereisOptions True, res))
+      , (cmd <> " --directory", (WhereisOptions True, res))
+      ]
+
+whereisParseWith :: [String] -> IO (WhereisOptions, WhereisCommand)
+whereisParseWith args = do
+  Whereis a b <- parseWith args
+  pure (a, b)