Implement config CLI MVP

README.md

@@ -19,8 +19,6 @@ Similar in scope to [rustup](https://github.com/rust-lang-nursery/rustup.rs), [p
      * [Env variables](#env-variables)
      * [Installing custom bindists](#installing-custom-bindists)
      * [Tips and tricks](#tips-and-tricks)
-     * [Stack hooks](#stack-hooks)
-     * [Sharing MSys2 between stack and ghcup](#sharing-msys2-between-stack-and-ghcup)
    * [Design goals](#design-goals)
    * [How](#how)
    * [Known users](#known-users)
@@ -141,10 +139,6 @@ This is the complete list of env variables that change GHCup behavior:
 * `GHCUP_SKIP_UPDATE_CHECK`: Skip the (possibly annoying) update check when you run a command
 * `CC`/`LD` etc.: full environment is passed to the build system when compiling GHC via GHCup
 
-On windows, there are additional variables:
-
-* `GHCUP_MSYS2`: where to find msys2, so we can invoke shells and other cool stuff
-
 ### Installing custom bindists
 
 There are a couple of good use cases to install custom bindists:
@@ -208,36 +202,6 @@ with_ghc 8.10.5 code path/to/haskell/source
 Cabal and HLS will now see `8.10.5` as the primary GHC, without the need to
 run `ghcup set` all the time when switching between projects.
 
-### Stack hooks
-
-GHCup distributes a patched Stack, which has support for custom installation hooks, see:
-
-* https://github.com/commercialhaskell/stack/pull/5585
-
-Usually, the bootstrap script will already install a hook for you. If not,
-download it [here](https://gitlab.haskell.org/haskell/ghcup-hs/-/tree/master/hooks/stack/ghc-install.sh),
-place it in `~/.stack/hooks/ghc-install.sh` and make sure it's executable.
-
-Hooks aren't run when `system-ghc: true` is set in `stack.yaml`. If you want stack
-to never fall back to its own installation logic if ghcup fails, run the following command:
-
-```sh
-stack config set install-ghc false --global
-```
-
-### Sharing MSys2 between stack and ghcup
-
-You can tell stack to use GHCup's MSys2 installation. Add the following lines to `~/.stack/config.yaml`:
-
-```yml
-skip-msys: true
-extra-path:
-  - "C:\\ghcup\\msys64\\usr\\bin"
-  - "C:\\ghcup\\msys64\\mingw64\\bin"
-extra-include-dirs: "C:\\ghcup\\msys64\\mingw64\\include"
-extra-lib-dirs: "C:\\ghcup\\msys64\\mingw64\\lib"
-```
-
 ## Design goals
 
 1. simplicity
@@ -314,6 +278,18 @@ to figure out whether you have the correct toolchain and
 the correct dependencies. Refer to [the official docs](https://ghc.haskell.org/trac/ghc/wiki/Building/Preparation/Linux)
 on how to prepare your environment for building GHC.
 
+### Stack support
+
+There may be a number of bugs when trying to make ghcup installed GHC versions work with stack,
+such as:
+
+- https://gitlab.haskell.org/haskell/ghcup-hs/-/issues/188
+
+Further, stack's upgrade procedure may break/confuse ghcup. There are a number of integration
+issues discussed here:
+
+- https://gitlab.haskell.org/haskell/ghcup-hs/-/issues/153
+
 ### Windows support
 
 Windows support is in early stages. Since windows doesn't support symbolic links properly,

app/ghcup/Main.hs

@@ -78,6 +78,8 @@ import qualified Data.Map.Strict               as M
 import qualified Data.Text                     as T
 import qualified Data.Text.IO                  as T
 import qualified Data.Text.Encoding            as E
+import qualified Data.Yaml                     as Y
+import qualified Data.Yaml.Pretty              as YP
 import qualified Text.Megaparsec               as MP
 import qualified Text.Megaparsec.Char          as MPC
 
@@ -105,6 +107,7 @@ data Command
   | Rm (Either RmCommand RmOptions)
   | DInfo
   | Compile CompileCommand
+  | Config ConfigCommand
   | Whereis WhereisOptions WhereisCommand
   | Upgrade UpgradeOpts Bool
   | ToolRequirements
@@ -173,6 +176,8 @@ data RmOptions = RmOptions
 
 data CompileCommand = CompileGHC GHCCompileOptions
 
+data ConfigCommand = ShowConfig | SetConfig String String | InitConfig
+
 data GHCCompileOptions = GHCCompileOptions
   { targetGhc    :: Either Version GitBranch
   , bootstrapGhc :: Either Version FilePath
@@ -408,6 +413,12 @@ com =
                   <> footerDoc (Just $ text changeLogFooter)
                   )
                )
+          <> command
+               "config"
+               (   Config
+               <$> info (configP <**> helper)
+                        (progDesc "Show or set config" <> footerDoc (Just $ text configFooter))
+               )
           <> commandGroup "Other commands:"
           <> hidden
           )
@@ -482,6 +493,17 @@ Examples:
   ghcup prefetch ghc 8.10.5
   ghcup --offline install ghc 8.10.5|]
 
+configFooter :: String
+configFooter = [s|Examples:
+
+# show current config
+ghcup config
+
+# initialize config
+ghcup config init
+
+# set <key> <value> configuration pair
+ghcup config <key> <value>|]
 
 installCabalFooter :: String
 installCabalFooter = [s|Discussion:
@@ -786,6 +808,19 @@ Examples:
   # build cross compiler
   ghcup compile ghc -j 4 -v 8.4.2 -b 8.2.2 -x armv7-unknown-linux-gnueabihf --config $(pwd)/build.mk -- --enable-unregisterised|]
 
+configP :: Parser ConfigCommand
+configP = subparser
+      (  command "init" initP
+      <> command "set"  setP -- [set] KEY VALUE at help lhs
+      <> command "show" showP
+      )
+    <|> argsP -- add show for a single option
+    <|> pure ShowConfig
+ where
+  initP = info (pure InitConfig) (progDesc "Write default config to ~/.ghcup/config.yaml")
+  showP = info (pure ShowConfig) (progDesc "Show current config (default)")
+  setP  = info argsP (progDesc "Set config KEY to VALUE")
+  argsP = SetConfig <$> argument str (metavar "KEY") <*> argument str (metavar "VALUE")
 
 whereisP :: Parser WhereisCommand
 whereisP = subparser
@@ -1258,6 +1293,27 @@ toSettings options = do
          , bShowAllTools = fromMaybe bShowAllTools kShowAllTools
          }
 
+updateSettings :: UTF8.ByteString -> Settings -> IO Settings
+updateSettings config settings = do
+  settings' <- runE @'[JSONError] $ lE' JSONDecodeError . first show . Y.decodeEither' $ config
+
+  case settings' of
+    VRight r -> pure $ mergeConf r settings
+    VLeft (V (JSONDecodeError e)) -> do
+      B.hPut stderr ("Error decoding config: " <> (E.encodeUtf8 . T.pack . show $ e))
+      die ""
+    _ -> die "Unexpected error!"
+  where
+   mergeConf :: UserSettings -> Settings -> Settings
+   mergeConf UserSettings{..} Settings{..} =
+     let cache'      = fromMaybe cache uCache
+         noVerify'   = fromMaybe noVerify uNoVerify
+         keepDirs'   = fromMaybe keepDirs uKeepDirs
+         downloader' = fromMaybe downloader uDownloader
+         verbose'    = fromMaybe verbose uVerbose
+         urlSource'  = fromMaybe urlSource uUrlSource
+         noNetwork'  = fromMaybe noNetwork uNoNetwork
+     in Settings cache' noVerify' keepDirs' downloader' verbose' urlSource' noNetwork'
 
 upgradeOptsP :: Parser UpgradeOpts
 upgradeOptsP =
@@ -1292,6 +1348,12 @@ describe_result = $( LitE . StringL <$>
                      )
                    )
 
+formatConfig :: Settings -> KeyBindings -> String
+formatConfig settings keybindings = unlines [formatSettings, formatKeybindings]
+ where
+  formatKeybindings = unlines . ("key-bindings:":) . map ("  "++) . lines . UTF8.toString . YP.encodePretty yamlConfig $ keybindings
+  formatSettings = UTF8.toString . YP.encodePretty yamlConfig $ settings
+  yamlConfig = YP.setConfCompare compare YP.defConfig
 
 main :: IO ()
 main = do
@@ -1990,6 +2052,28 @@ Make sure to clean up #{tmpdir} afterwards.|])
                         runLogger $ $(logError) $ T.pack $ prettyShow e
                         pure $ ExitFailure 9
 
+            Config InitConfig -> do
+              path <- getConfigFilePath
+              writeFile path $ formatConfig settings keybindings
+              runLogger $ $(logDebug) [i|"config.yaml initialized at #{path}|]
+              pure ExitSuccess
+
+            Config ShowConfig -> do
+              putStrLn $ formatConfig settings keybindings
+              pure ExitSuccess
+
+            Config (SetConfig k v) -> do
+              case v of
+                "" -> die "Empty values are not allowed."
+                _  -> do
+                  settings' <- updateSettings [i|#{k}: #{v}\n|] settings
+                  runLogger $ $(logDebug) $ T.pack $ show settings'
+
+                  path <- getConfigFilePath
+                  writeFile path $ formatConfig settings' keybindings
+
+                  pure ExitSuccess
+
             Whereis WhereisOptions{..} (WhereisTool tool (Just (ToolVersion v))) ->
               runLeanWhereIs (do
                 loc <- liftE $ whereIsTool tool v

bootstrap-haskell

@@ -8,7 +8,6 @@
 #   * BOOTSTRAP_HASKELL_GHC_VERSION - the ghc version to install
 #   * BOOTSTRAP_HASKELL_CABAL_VERSION - the cabal version to install
 #   * BOOTSTRAP_HASKELL_INSTALL_STACK - whether to install latest stack
-#   * BOOTSTRAP_HASKELL_INSTALL_STACK_HOOK - whether to install stack hook as well
 #   * BOOTSTRAP_HASKELL_INSTALL_HLS - whether to install latest hls
 #   * BOOTSTRAP_HASKELL_ADJUST_BASHRC - whether to adjust PATH in bashrc (prepend)
 #   * BOOTSTRAP_HASKELL_ADJUST_CABAL_CONFIG - whether to adjust mingw paths in cabal.config on windows
@@ -509,25 +508,17 @@ ask_hls() {
 
 ask_stack() {
 	if [ -n "${BOOTSTRAP_HASKELL_INSTALL_STACK}" ] ; then
-		if [ -n "${BOOTSTRAP_HASKELL_INSTALL_STACK_HOOK}" ] ; then
+		return 1
-			return 2
-		else
-			return 1
-		fi
 	fi
 
 	if [ -z "${BOOTSTRAP_HASKELL_NONINTERACTIVE}" ] ; then
 		echo "-------------------------------------------------------------------------------"
 
-		warn "Do you want to install stack and stack hooks?"
+		warn "Do you want to install stack?"
-		warn ""
 		warn "Stack is a haskell build tool similar to cabal that is used by some projects."
 		warn "Also see https://docs.haskellstack.org/"
 		warn ""
-		warn "Stack hooks allow stack to use ghcup for GHC installation (usually stack handles"
+		warn "[Y] Yes  [N] No  [?] Help (default is \"N\")."
-		warn "installation itself, leading to possibly duplicated GHC versions)."
-		warn ""
-		warn "[Y] Yes, with hooks  [L] Yes, no hooks  [N] No  [?] Help (default is \"N\")."
 		warn ""
 
 		while true; do
@@ -535,16 +526,13 @@ ask_stack() {
 
 			case $stack_answer in
 				[Yy]*)
-					return 2 ;;
-				[Ll]*)
 					return 1 ;;
 				[Nn]* | "")
 					return 0 ;;
 				*)
 					echo "Possible choices are:"
 					echo
-					echo "Y - Yes, install stack with hooks"
+					echo "Y - Yes, install stack"
-					echo "L - Yes, install stack without hooks"
 					echo "N - No, don't install anything more (default)"
 					echo
 					echo "Please make your choice and press ENTER."
@@ -648,27 +636,7 @@ esac
 
 case $ask_stack_answer in
 	1)
-		{
+		_eghcup --cache install stack || warn "Stack installation failed, continuing anyway"
-			_eghcup --cache install stack
-			edo stack update
-		} || warn "Stack installation failed, continuing anyway"
-		;;
-	2)
-		{
-			_eghcup --cache install stack
-		    edo stack update
-			if [ -n "${STACK_ROOT}" ] ; then
-				stack_root=$STACK_ROOT
-			else
-				stack_root=${HOME}/.stack
-			fi
-			edo mkdir -p "${stack_root}/hooks/"
-			edo curl -Lf "https://www.haskell.org/ghcup/sh/hooks/stack/ghc-install.sh" > "${stack_root}/hooks/ghc-install.sh"
-			edo chmod +x "${stack_root}/hooks/ghc-install.sh"
-			edo stack config set system-ghc  false --global
-			edo stack config set install-ghc false --global
-
-		} || warn "Stack installation failed, continuing anyway"
 		;;
 	*) ;;
 esac

bootstrap-haskell.ps1

@@ -29,8 +29,6 @@ param (
     [switch]$InBash,
     # Whether to install stack as well
     [switch]$InstallStack,
-    # Whether to install stack hooks as well
-    [switch]$InstallStackHook,
     # Whether to install hls as well
     [switch]$InstallHLS,
     # Skip adjusting cabal.config with mingw paths
@@ -225,7 +223,6 @@ $null = [Environment]::SetEnvironmentVariable("GHCUP_INSTALL_BASE_PREFIX", $Ghcu
 
 
 $GhcupDir = ('{0}\ghcup' -f $GhcupBasePrefix)
-$StackDir = ('{0}\sr' -f $GhcupBasePrefix)
 $MsysDir = ('{0}\msys64' -f $GhcupDir)
 $Bash = ('{0}\usr\bin\bash' -f $MsysDir)
 if (!($BootstrapUrl)) {
@@ -313,28 +310,15 @@ if (!($InstallHLS)) {
 }
 
 # ask whether to install stack
-$InstallStackDoc = @'
-Do you want to install stack and stack hooks?
-
-Stack is a haskell build tool similar to cabal that is used by some projects.
-Also see https://docs.haskellstack.org/
-
-Stack hooks allow stack to use ghcup for GHC installation (usually stack handles
-installation itself, leading to possibly duplicated GHC versions).
-'@
 if (!($InstallStack)) {
   if (!($Silent)) {
     $StackDecision = $Host.UI.PromptForChoice('Install stack'
-      , $InstallStackDoc
+      , 'Do you want to install stack as well?'
-      , [System.Management.Automation.Host.ChoiceDescription[]] @('&Yes, with hooks'
+      , [System.Management.Automation.Host.ChoiceDescription[]] @('&Yes'
-          '&Light install, without hooks'
           '&No'
-          '&Abort'), 2)
+          '&Abort'), 1)
 
     if ($StackDecision -eq 0) {
-      $InstallStack = $true
-	  $InstallStackHook = $true
-    } elseif ($StackDecision -eq 1) {
       $InstallStack = $true
     } elseif ($StackDecision -eq 2) {
       Exit 0
@@ -515,11 +499,6 @@ $SilentExport = 'export BOOTSTRAP_HASKELL_NONINTERACTIVE=1 ;'
 
 if ($InstallStack) {
   $StackInstallExport = 'export BOOTSTRAP_HASKELL_INSTALL_STACK=1 ;'
-  $null = [Environment]::SetEnvironmentVariable("STACK_ROOT", $StackDir, [System.EnvironmentVariableTarget]::User)
-}
-
-if ($InstallStackHook) {
-  $StackInstallHookExport = 'export BOOTSTRAP_HASKELL_INSTALL_STACK_HOOK=1 ;'
 }
 
 if ($InstallHLS) {
@@ -531,9 +510,9 @@ if (!($NoAdjustCabalConfig)) {
 }
 
 if ((Get-Process -ID $PID).ProcessName.StartsWith("bootstrap-haskell") -Or $InBash) {
-  Exec "$Bash" '-lc' ('{4} {6} {7} {8} {9} [ -n ''{1}'' ] && export GHCUP_MSYS2=$(cygpath -m ''{1}'') ; [ -n ''{2}'' ] && export GHCUP_INSTALL_BASE_PREFIX=$(cygpath -m ''{2}/'') ; export PATH=$(cygpath -u ''{3}/bin''):$PATH ; export CABAL_DIR=''{5}'' ; export STACK_ROOT=$(cygpath -m ''{10}/'') ; [[ ''{0}'' = https* ]]  && curl --proto ''=https'' --tlsv1.2 -sSf {0} | bash || cat $(cygpath -m ''{0}'') | bash' -f $BootstrapUrl, $MsysDir, $GhcupBasePrefix, $GhcupDir, $SilentExport, $CabalDirFull, $StackInstallExport, $HLSInstallExport, $AdjustCabalConfigExport, $StackInstallHookExport, $StackDir)
+  Exec "$Bash" '-lc' ('{4} {6} {7} {8} [ -n ''{1}'' ] && export GHCUP_MSYS2=$(cygpath -m ''{1}'') ; [ -n ''{2}'' ] && export GHCUP_INSTALL_BASE_PREFIX=$(cygpath -m ''{2}/'') ; export PATH=$(cygpath -u ''{3}/bin''):$PATH ; export CABAL_DIR=''{5}'' ; [[ ''{0}'' = https* ]]  && curl --proto ''=https'' --tlsv1.2 -sSf {0} | bash || cat $(cygpath -m ''{0}'') | bash' -f $BootstrapUrl, $MsysDir, $GhcupBasePrefix, $GhcupDir, $SilentExport, $CabalDirFull, $StackInstallExport, $HLSInstallExport, $AdjustCabalConfigExport)
 } else {
-  Exec "$Msys2Shell" '-mingw64' '-mintty' '-c' ('{4} {6} {7} {8} {9} [ -n ''{1}'' ] && export GHCUP_MSYS2=$(cygpath -m ''{1}'') ; [ -n ''{2}'' ] && export GHCUP_INSTALL_BASE_PREFIX=$(cygpath -m ''{2}/'') ; export PATH=$(cygpath -u ''{3}/bin''):$PATH ; export CABAL_DIR=''{5}'' ; export STACK_ROOT=$(cygpath -m ''{10}/'') ; trap ''echo Press any key to exit && read -n 1 && exit'' 2 ; [[ ''{0}'' = https* ]]  && curl --proto ''=https'' --tlsv1.2 -sSf {0} | bash || cat $(cygpath -m ''{0}'') | bash ; echo ''Press any key to exit'' && read -n 1' -f $BootstrapUrl, $MsysDir, $GhcupBasePrefix, $GhcupDir, $SilentExport, $CabalDirFull, $StackInstallExport, $HLSInstallExport, $AdjustCabalConfigExport, $StackInstallHookExport, $StackDir)
+  Exec "$Msys2Shell" '-mingw64' '-mintty' '-c' ('{4} {6} {7} {8} [ -n ''{1}'' ] && export GHCUP_MSYS2=$(cygpath -m ''{1}'') ; [ -n ''{2}'' ] && export GHCUP_INSTALL_BASE_PREFIX=$(cygpath -m ''{2}/'') ; export PATH=$(cygpath -u ''{3}/bin''):$PATH ; export CABAL_DIR=''{5}'' ; trap ''echo Press any key to exit && read -n 1 && exit'' 2 ; [[ ''{0}'' = https* ]]  && curl --proto ''=https'' --tlsv1.2 -sSf {0} | bash || cat $(cygpath -m ''{0}'') | bash ; echo ''Press any key to exit'' && read -n 1' -f $BootstrapUrl, $MsysDir, $GhcupBasePrefix, $GhcupDir, $SilentExport, $CabalDirFull, $StackInstallExport, $HLSInstallExport, $AdjustCabalConfigExport)
 }
 
 

ghcup-0.0.6.yaml

@@ -2206,7 +2206,8 @@ ghcupDownloads:
             unknown_versioning: *stack-271-64
     2.7.3:
       viTags:
-        - old
+        - Latest
+        - Recommended
       viChangeLog: https://github.com/commercialhaskell/stack/blob/master/ChangeLog.md#v273
       viPostInstall: *stack-post
       viArch:
@@ -2231,65 +2232,4 @@ ghcupDownloads:
                 RegexDir: "stack-.*"
           Linux_Alpine:
             unknown_versioning: *stack-273-64
-    2.7.3.1:
-      viTags:
-        - Latest
-        - Recommended
-      viChangeLog: https://github.com/commercialhaskell/stack/blob/master/ChangeLog.md#v273
-      viPostInstall: &stack-post-new |
-        Stack manages GHC versions internally by default. It can also use hooks to automatically
-        install and locate GHC versions utilizing GHCup:
-          https://gitlab.haskell.org/haskell/ghcup-hs#stack-hooks
 
-        Alternatively, you can also tell stack to use the system GHC version (whatever is in PATH):
-          stack config set system-ghc  true  --global
-
-        If you want stack to use GHCup's provided MSys2, follow the instructions here (not recommended):
-          https://gitlab.haskell.org/haskell/ghcup-hs/-/tree/stack-fork#sharing-msys2-between-stack-and-ghcup
-
-        Also check out: https://docs.haskellstack.org/en/stable/yaml_configuration
-
-        !!! GHCup ships a patched version of stack. Before reporting bugs to stack developers !!!
-        !!! make sure it is reproducible with the original stack version:                     !!!
-        !!!   https://docs.haskellstack.org/en/stable/install_and_upgrade/                    !!!
-      viArch:
-        A_64:
-          Linux_UnknownLinux:
-            unknown_versioning: &stack-2731-64
-              dlUri: https://downloads.haskell.org/ghcup/unofficial-bindists/stack/2.7.3.1/stack-2.7.3.1-linux-x86_64.tar.gz
-              dlSubdir:
-                RegexDir: "stack-.*"
-              dlHash: 7c10090d568651208b6d6c003c8d78ef79099f4b472aea5ca800f3e4a7a1c6ce
-          Darwin:
-            unknown_versioning:
-              dlUri: https://downloads.haskell.org/ghcup/unofficial-bindists/stack/2.7.3.1/stack-2.7.3.1-osx-x86_64.tar.gz
-              dlSubdir:
-                RegexDir: "stack-.*"
-              dlHash: 23030868be377d62ed324332d239ddd915b12f7a64c887f297e1b60a3f65894f
-          Windows:
-            unknown_versioning:
-              dlUri: https://downloads.haskell.org/ghcup/unofficial-bindists/stack/2.7.3.1/stack-2.7.3.1-windows-x86_64.tar.bz2
-              dlHash: 983ac24219370cdf220f47f9edb17d0aeb831a1253fd777d322fd1bff358c511
-          Linux_Alpine:
-            unknown_versioning: *stack-2731-64
-          FreeBSD:
-            unknown_versioning:
-              dlUri: https://downloads.haskell.org/ghcup/unofficial-bindists/stack/2.7.3.1/stack-2.7.3.1-freebsd-x86_64.tar.gz
-              dlHash: b6b1eb59981b8c1d3a04b061f03296b1540ecbadbc34cbd4fe712a575a155ee9
-        A_32:
-          Linux_UnknownLinux:
-            unknown_versioning: &stack-2731-32
-              dlUri: https://downloads.haskell.org/ghcup/unofficial-bindists/stack/2.7.3.1/stack-2.7.3.1-linux-i386.tar.gz
-              dlHash: da2081d84517d16a8216e929582dd39caa19643c819b77c6f68f138bd177a758
-          Linux_Alpine:
-            unknown_versioning: *stack-2731-32
-        A_ARM64:
-          Linux_UnknownLinux:
-            unknown_versioning:
-              dlUri: https://downloads.haskell.org/ghcup/unofficial-bindists/stack/2.7.3.1/stack-2.7.3.1-linux-aarch64.tar.gz
-              dlHash: 0e1789852a476dd87f495fa0b481309398b2bafc00cf7c8d980c91977b39d9a6
-        A_ARM:
-          Linux_UnknownLinux:
-            unknown_versioning:
-              dlUri: https://downloads.haskell.org/ghcup/unofficial-bindists/stack/2.7.3.1/stack-2.7.3.1-linux-armv7.tar.gz
-              dlHash: 13d61616c169615d80381ea0c84e13540410b736a553565cd48d10b4d2bd7f23

ghcup.cabal

@@ -226,6 +226,7 @@ executable ghcup
     , uri-bytestring        ^>=0.3.2.2
     , utf8-string           ^>=1.0
     , versions              >=4.0.1    && <5.1
+    , yaml                  ^>=0.11.4.0
 
   if flag(internal-downloader)
     cpp-options: -DINTERNAL_DOWNLOADER

hooks/stack/ghc-install.sh

@@ -1,23 +0,0 @@
-#!/bin/sh
-
-set -eu
-
-case $HOOK_GHC_TYPE in
-	bindist)
-		ghcup --offline whereis ghc $HOOK_GHC_VERSION || {
-			ghcup --cache install ghc $HOOK_GHC_VERSION && ghcup whereis ghc $HOOK_GHC_VERSION
-		}
-		;;
-	git)
-		>&2 echo "Hook doesn't support installing from source."
-		>&2 echo "Consider enabling stack GHC installs for this project, via:"
-		>&2 echo "    stack config set install-ghc true"
-		exit 1
-		;;
-	*)
-		>&2 echo "Unsupported GHC installation type: ${HOOK_GHC_TYPE}."
-		>&2 echo "Consider enabling stack GHC installs for this project, via:"
-		>&2 echo "    stack config set install-ghc true"
-		exit 2
-		;;
-esac

lib/GHCup/Types/JSON.hs

@@ -316,3 +316,6 @@ deriveJSON defaultOptions { sumEncoding = ObjectWithSingleField } ''URLSource
 deriveJSON defaultOptions { sumEncoding = ObjectWithSingleField } ''Key
 deriveJSON defaultOptions { fieldLabelModifier = \str' -> maybe str' T.unpack . T.stripPrefix (T.pack "k-") . T.pack . kebab $ str' } ''UserKeyBindings
 deriveJSON defaultOptions { fieldLabelModifier = \str' -> maybe str' T.unpack . T.stripPrefix (T.pack "u-") . T.pack . kebab $ str' } ''UserSettings
+
+deriveToJSON defaultOptions { fieldLabelModifier = kebab } ''Settings
+deriveToJSON defaultOptions { fieldLabelModifier = drop 2 . kebab } ''KeyBindings -- move under key-bindings key