Clarify stack postinstall message wrt #153

Fixes #163

.gitlab-ci.yml

@@ -221,6 +221,23 @@ test:linux:bootstrap_script:
     CABAL_VERSION: "3.4.0.0"
   extends:
     - .debian
+    - .root_cleanup
+  needs: []
+
+test:windows:bootstrap_powershell_script:
+  stage: test
+  script:
+    - ./bootstrap-haskell.ps1 -InstallDir $CI_PROJECT_DIR -BootstrapUrl $CI_PROJECT_DIR/bootstrap-haskell -InBash
+  after_script:
+    - "[Environment]::SetEnvironmentVariable('GHCUP_INSTALL_BASE_PREFIX', $null, [System.EnvironmentVariableTarget]::User)"
+    - "[Environment]::SetEnvironmentVariable('GHCUP_MSYS2', $null, [System.EnvironmentVariableTarget]::User)"
+    - "[Environment]::SetEnvironmentVariable('CABAL_DIR', $null, [System.EnvironmentVariableTarget]::User)"
+    - bash ./.gitlab/after_script.sh
+  variables:
+    GHC_VERSION: "8.10.5"
+    CABAL_VERSION: "3.4.0.0"
+  extends:
+    - .windows
   needs: []
 
 ######## linux test ########

HACKING.md

@@ -69,3 +69,7 @@ yaml files: `ghcup-<yaml-ver>.yaml`.
    Most of the `Version` parameters to functions had to be replaced with
    that and ensured the logic is consistent for cross and non-cross
    installs.
+2. This refactor added windows support wrt [#130](https://gitlab.haskell.org/haskell/ghcup-hs/-/issues/130).
+   The major changes here were switching `hpath` library out for `filepath`/`directory` (sadly) and
+   introducing a non-unix way of handling processes via the `process` library. It also introduced considerable
+   amounts of CPP wrt file handling, installation etc.

bootstrap-haskell

@@ -210,6 +210,90 @@ download_ghcup() {
     eghcup upgrade
 }
 
+adjust_bashrc() {
+	case $SHELL in
+		*/zsh) # login shell is zsh
+			GHCUP_PROFILE_FILE="$HOME/.zshrc"
+			MY_SHELL="zsh" ;;
+		*/bash) # login shell is bash
+			GHCUP_PROFILE_FILE="$HOME/.bashrc"
+			MY_SHELL="bash" ;;
+		*/sh) # login shell is sh, but might be a symlink to bash or zsh
+			if [ -n "${BASH}" ] ; then
+				GHCUP_PROFILE_FILE="$HOME/.bashrc"
+				MY_SHELL="bash"
+			elif [ -n "${ZSH_VERSION}" ] ; then
+				GHCUP_PROFILE_FILE="$HOME/.zshrc"
+				MY_SHELL="zsh"
+			else
+				return
+			fi
+			;;
+		*/fish) # login shell is fish
+			GHCUP_PROFILE_FILE="$HOME/.config/fish/config.fish"
+			MY_SHELL="fish" ;;
+		*) return ;;
+	esac
+
+
+	warn ""
+	warn "Detected ${MY_SHELL} shell on your system..."
+	warn "If you want ghcup to automatically add the required PATH variable to \"${GHCUP_PROFILE_FILE}\""
+	warn ""
+	warn "[Y] Yes  [N] No  [?] Help (default is \"Y\")."
+	warn ""
+
+	while true; do
+		if [ -z "${BOOTSTRAP_HASKELL_NONINTERACTIVE}" ] ; then
+			read -r next_answer </dev/tty
+		else
+			next_answer="yes"
+		fi
+
+		case $next_answer in
+			[Nn]*)
+				return ;;
+			[Yy]* | "")
+				case $MY_SHELL in
+					"") break ;;
+					fish)
+							mkdir -p "${GHCUP_PROFILE_FILE%/*}"
+							sed -i -e '/# ghcup-env$/ s/^#*/#/' "${GHCUP_PROFILE_FILE}"
+							echo "set -q GHCUP_INSTALL_BASE_PREFIX[1]; or set GHCUP_INSTALL_BASE_PREFIX \$HOME ; test -f $GHCUP_DIR/env ; and set -gx PATH \$HOME/.cabal/bin $GHCUP_BIN \$PATH # ghcup-env" >> "${GHCUP_PROFILE_FILE}"
+						break ;;
+					bash)
+						sed -i -e '/# ghcup-env$/ s/^#*/#/' "${GHCUP_PROFILE_FILE}"
+						echo "[ -f \"${GHCUP_DIR}/env\" ] && source \"${GHCUP_DIR}/env\" # ghcup-env" >> "${GHCUP_PROFILE_FILE}"
+						case "${plat}" in
+							"Darwin"|"darwin")
+								if ! grep -q "ghcup-env" "${HOME}/.bash_profile" ; then
+									echo "[[ -f ~/.bashrc ]] && source ~/.bashrc # ghcup-env" >> "${HOME}/.bash_profile"
+								fi
+								;;
+						esac
+						break ;;
+
+					zsh)
+						sed -i -e '/# ghcup-env$/ s/^#*/#/' "${GHCUP_PROFILE_FILE}"
+						echo "[ -f \"${GHCUP_DIR}/env\" ] && source \"${GHCUP_DIR}/env\" # ghcup-env" >> "${GHCUP_PROFILE_FILE}"
+						break ;;
+				esac
+				warn "OK! ${GHCUP_PROFILE_FILE} has been modified. Restart your terminal for the changes to take effect,"
+				warn "or type \"source ${GHCUP_DIR}/env\" to apply them in your current terminal session."
+				return
+				;;
+			*)
+				echo "Possible choices are:"
+				echo
+				echo "Y - Yes, update my \"${GHCUP_PROFILE_FILE}\" (default)"
+				echo "N - No, don't mess with my configuration"
+				echo
+				echo "Please make your choice and press ENTER."
+				;;
+		esac
+	done
+}
+
 
 echo
 echo "Welcome to Haskell!"
@@ -317,6 +401,7 @@ esac
 
 edo cabal new-update
 
+
 if [ -z "${BOOTSTRAP_HASKELL_NONINTERACTIVE}" ] ; then
 	warn "Do you want to install haskell-language-server (HLS) now?"
 	warn "HLS is a language-server that provides IDE-like functionality"
@@ -331,7 +416,7 @@ if [ -z "${BOOTSTRAP_HASKELL_NONINTERACTIVE}" ] ; then
 
 		case $hls_answer in
 			[Yy]*)
-				eghcup --cache install hls || warn "HLS installation failed, continuing anyway"
+				_eghcup --cache install hls || warn "HLS installation failed, continuing anyway"
 				break ;;
 			[Nn]* | "")
 				break ;;
@@ -358,7 +443,7 @@ if [ -z "${BOOTSTRAP_HASKELL_NONINTERACTIVE}" ] ; then
 
 		case $stack_answer in
 			[Yy]*)
-				eghcup --cache install stack || warn "Stack installation failed, continuing anyway"
+				_eghcup --cache install stack || warn "Stack installation failed, continuing anyway"
 				break ;;
 			[Nn]* | "")
 				break ;;
@@ -372,89 +457,24 @@ if [ -z "${BOOTSTRAP_HASKELL_NONINTERACTIVE}" ] ; then
 				;;
 		esac
 	done
+fi
 
-    echo "In order to run ghc and cabal, you need to adjust your PATH variable."
+# short-circuit script based on platform
-    echo "You may want to source '$GHCUP_DIR/env' in your shell"
+case "${plat}" in
-    echo "configuration to do so (e.g. ~/.bashrc)."
+        MSYS*|MINGW*)
+			# For windows we always adjust bashrc, since it's inside msys2
+			adjust_bashrc
+			;;
+		*)
+        	if [ -z "${BOOTSTRAP_HASKELL_NONINTERACTIVE}" ] ; then
+				echo "In order to run ghc and cabal, you need to adjust your PATH variable."
+				echo "You may want to source '$GHCUP_DIR/env' in your shell"
+				echo "configuration to do so (e.g. ~/.bashrc)."
 
-	case $SHELL in
+				adjust_bashrc
-		*/zsh) # login shell is zsh
-			GHCUP_PROFILE_FILE="$HOME/.zshrc"
-			MY_SHELL="zsh" ;;
-		*/bash) # login shell is bash
-			GHCUP_PROFILE_FILE="$HOME/.bashrc"
-			MY_SHELL="bash" ;;
-		*/sh) # login shell is sh, but might be a symlink to bash or zsh
-			if [ -n "${BASH}" ] ; then
-				GHCUP_PROFILE_FILE="$HOME/.bashrc"
-				MY_SHELL="bash"
-			elif [ -n "${ZSH_VERSION}" ] ; then
-				GHCUP_PROFILE_FILE="$HOME/.zshrc"
-				MY_SHELL="zsh"
-			else
-			    _done
 			fi
 			;;
-		*/fish) # login shell is fish
+esac
-			GHCUP_PROFILE_FILE="$HOME/.config/fish/config.fish"
-			MY_SHELL="fish" ;;
-		*) _done ;;
-	esac
-
-
-	warn ""
-	warn "Detected ${MY_SHELL} shell on your system..."
-	warn "If you want ghcup to automatically add the required PATH variable to \"${GHCUP_PROFILE_FILE}\""
-	warn ""
-	warn "[Y] Yes  [N] No  [?] Help (default is \"Y\")."
-	warn ""
-
-    while true; do
-        read -r next_answer </dev/tty
-
-        case $next_answer in
-            [Nn]*)
-                _done ;;
-            [Yy]* | "")
-				case $MY_SHELL in
-					"") break ;;
-					fish)
-							mkdir -p "${GHCUP_PROFILE_FILE%/*}"
-							sed -i -e '/# ghcup-env$/ s/^#*/#/' "${GHCUP_PROFILE_FILE}"
-							echo "set -q GHCUP_INSTALL_BASE_PREFIX[1]; or set GHCUP_INSTALL_BASE_PREFIX \$HOME ; test -f $GHCUP_DIR/env ; and set -gx PATH \$HOME/.cabal/bin $GHCUP_BIN \$PATH # ghcup-env" >> "${GHCUP_PROFILE_FILE}"
-						break ;;
-					bash)
-						sed -i -e '/# ghcup-env$/ s/^#*/#/' "${GHCUP_PROFILE_FILE}"
-						echo "[ -f \"${GHCUP_DIR}/env\" ] && source \"${GHCUP_DIR}/env\" # ghcup-env" >> "${GHCUP_PROFILE_FILE}"
-						case "${plat}" in
-							"Darwin"|"darwin")
-								if ! grep -q "ghcup-env" "${HOME}/.bash_profile" ; then
-									echo "[[ -f ~/.bashrc ]] && source ~/.bashrc # ghcup-env" >> "${HOME}/.bash_profile"
-								fi
-								;;
-						esac
-						break ;;
-
-					zsh)
-						sed -i -e '/# ghcup-env$/ s/^#*/#/' "${GHCUP_PROFILE_FILE}"
-						echo "[ -f \"${GHCUP_DIR}/env\" ] && source \"${GHCUP_DIR}/env\" # ghcup-env" >> "${GHCUP_PROFILE_FILE}"
-						break ;;
-				esac
-                warn "OK! ${GHCUP_PROFILE_FILE} has been modified. Restart your terminal for the changes to take effect,"
-                warn "or type \"source ${GHCUP_DIR}/env\" to apply them in your current terminal session."
-				_done
-                ;;
-			*)
-				echo "Possible choices are:"
-				echo
-				echo "Y - Yes, update my \"${GHCUP_PROFILE_FILE}\" (default)"
-				echo "N - No, don't mess with my configuration"
-				echo
-				echo "Please make your choice and press ENTER."
-				;;
-        esac
-    done
-fi
 
 _done
 

bootstrap-haskell.ps1

@@ -13,20 +13,24 @@
     * hls   - (optional) A language server for developers to integrate with their editor/IDE"
 #>
 param (
-    # Run a non-interactive installation
+    # Run an interactive installation
-    [switch]$Silent,
+    [switch]$Interactive,
     # Specify the install root (default: 'C:\')
     [string]$InstallDir,
     # Instead of installing a new MSys2, use an existing installation
     [string]$ExistingMsys2Dir,
     # Specify the cabal root directory (default: '$InstallDir\cabal')
     [string]$CabalDir,
-    # Perform a quick installation, omitting some expensive operations (you may have to install dependencies yourself later)
-    [bool]$Quick,
     # Overwrite (or rather backup) a previous install
-    [bool]$Overwrite
+    [switch]$Overwrite,
+    # Specify the bootstrap url (default: 'https://www.haskell.org/ghcup/sh/bootstrap-haskell')
+    [string]$BootstrapUrl,
+    # Run the final bootstrap script via 'bash' instead of a full newly spawned msys2 shell
+    [switch]$InBash
 )
 
+$Silent = !$Interactive
+
 function Print-Msg {
   param ( [Parameter(Mandatory=$true, HelpMessage='String to output')][string]$msg, [string]$color = "Green" )
   Write-Host ('{0}' -f $msg) -ForegroundColor $color
@@ -146,12 +150,41 @@ function Exec
 
 $ErrorActionPreference = 'Stop'
 
+$elevated = ([Security.Principal.WindowsPrincipal] `
+ [Security.Principal.WindowsIdentity]::GetCurrent()
+).IsInRole([Security.Principal.WindowsBuiltInRole]::Administrator)
+
+if ($elevated) {
+  Print-Msg -color Yellow -msg ('This script should not be run as administrator/elevated. Waiting 10s before continuing anyway...')
+  Start-Sleep -s 10
+}
+
 $GhcupBasePrefixEnv = [System.Environment]::GetEnvironmentVariable('GHCUP_INSTALL_BASE_PREFIX', 'user')
 
 if ($GhcupBasePrefixEnv) {
   $defaultGhcupBasePrefix = $GhcupBasePrefixEnv
 } else {
-  $defaultGhcupBasePrefix = 'C:\'
+  $partitions = Get-CimInstance win32_logicaldisk
+  $defaultGhcupBasePrefix = $null
+  foreach ($p in $partitions){
+    try {
+      if ($p."FreeSpace" -lt 5368709120) { # at least 5 GB are needed
+        throw ("Not enough free space on {0}" -f $p."DeviceId")
+      }
+      $null = New-Item -Path ('{0}\' -f $p."DeviceId") -Name "ghcup.test" -ItemType "directory" -Force
+      $defaultGhcupBasePrefix = ('{0}\' -f $p."DeviceId")
+      Remove-Item -LiteralPath ('{0}\ghcup.test' -f $p."DeviceId")
+      break
+    } catch {
+      Print-Msg -color Yellow -msg ("{0} not writable or not enough disk space, trying next device" -f $p."DeviceId")
+    }
+  }
+  if ($defaultGhcupBasePrefix) {
+    Print-Msg -color Green -msg ("Picked {0} as default Install prefix!" -f $defaultGhcupBasePrefix)
+  } else {
+    Print-Msg -color Red -msg "Couldn't find a writable partition with at least 5GB free disk space!"
+    Exit 1    
+  }
 }
 
 if ($Silent -and !($InstallDir)) {
@@ -194,7 +227,9 @@ $null = [Environment]::SetEnvironmentVariable("GHCUP_INSTALL_BASE_PREFIX", $Ghcu
 $GhcupDir = ('{0}\ghcup' -f $GhcupBasePrefix)
 $MsysDir = ('{0}\msys64' -f $GhcupDir)
 $Bash = ('{0}\usr\bin\bash' -f $MsysDir)
-$BootstrapUrl = 'https://www.haskell.org/ghcup/sh/bootstrap-haskell'
+if (!($BootstrapUrl)) {
+  $BootstrapUrl = 'https://www.haskell.org/ghcup/sh/bootstrap-haskell'
+}
 $GhcupMsys2 = [System.Environment]::GetEnvironmentVariable('GHCUP_MSYS2', 'user')
 
 Print-Msg -msg 'Preparing for GHCup installation...'
@@ -268,20 +303,8 @@ if (!(Test-Path -Path ('{0}' -f $MsysDir))) {
     Print-Msg -msg 'Upgrading full system twice...'
     Exec "$Bash" '-lc' 'pacman --noconfirm -Syuu'
 
-    if ($Quick) {
+    Print-Msg -msg 'Installing Dependencies...'
-      $ghcBuildDeps = $Quick
+    Exec "$Bash" '-lc' 'pacman --noconfirm -S --needed curl mingw-w64-x86_64-pkgconf'
-    } elseif (!($Silent)) {
-      $ghcBuildDeps = $Host.UI.PromptForChoice('Install Dependencies'
-        , 'Install a standard set of mingw64 packages to be able to build various haskell packages requiring unix libraries? (recommended, however this might take a while... if you skip this, you might have to do it manually later)'
-        , [System.Management.Automation.Host.ChoiceDescription[]] @('&Yes'
-            '&No'), 0)
-    } else {
-      $ghcBuildDeps = 0
-    }
-    if ($ghcBuildDeps -eq 0) {
-      Print-Msg -msg 'Installing Dependencies...'
-      Exec "$Bash" '-lc' 'pacman --noconfirm -S --needed git tar curl wget base-devel gettext binutils autoconf make libtool automake pkgconf python p7zip patch unzip'
-    }
 
     Print-Msg -msg 'Updating SSL root certificate authorities...'
     Exec "$Bash" '-lc' 'pacman --noconfirm -S ca-certificates'
@@ -320,6 +343,8 @@ if (!(Test-Path -Path ('{0}' -f $MsysDir))) {
 
 Print-Msg -msg 'Creating shortcuts...'
 $DesktopDir = [Environment]::GetFolderPath("Desktop")
+$GhcInstArgs = '-mingw64 -mintty -c "pacman --noconfirm -S --needed base-devel gettext autoconf make libtool automake python p7zip patch unzip"'
+Create-Shortcut -SourceExe ('{0}\msys2_shell.cmd' -f $MsysDir) -ArgumentsToSourceExe $GhcInstArgs -DestinationPath ('{0}\Install GHC dev dependencies.lnk' -f $DesktopDir)
 Create-Shortcut -SourceExe ('{0}\msys2_shell.cmd' -f $MsysDir) -ArgumentsToSourceExe '-mingw64' -DestinationPath ('{0}\Mingw haskell shell.lnk' -f $DesktopDir)
 Create-Shortcut -SourceExe 'https://www.msys2.org/docs/package-management' -ArgumentsToSourceExe '' -DestinationPath ('{0}\Mingw package management docs.url' -f $DesktopDir)
 
@@ -369,10 +394,10 @@ if ($Silent) {
   $SilentExport = ''
 }
 
-if ((Get-Process -ID $PID).ProcessName.StartsWith("bootstrap-haskell")) {
+if ((Get-Process -ID $PID).ProcessName.StartsWith("bootstrap-haskell") -Or $InBash) {
-  Exec "$Bash" '-lc' ('{4} [ -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}'' ; curl --proto ''=https'' --tlsv1.2 -sSf {0} | bash' -f $BootstrapUrl, $MsysDir, $GhcupBasePrefix, $GhcupDir, $SilentExport, $CabalDirFull)
+  Exec "$Bash" '-lc' ('{4} [ -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, $CabalDirFull)
 } else {
-  Exec "$Msys2Shell" '-mingw64' '-mintty' '-c' ('{4} [ -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 ; curl --proto =https --tlsv1.2 -sSf -k {0} | bash ; echo ''Press any key to exit'' && read -n 1' -f $BootstrapUrl, $MsysDir, $GhcupBasePrefix, $GhcupDir, $SilentExport, $CabalDirFull)
+  Exec "$Msys2Shell" '-mingw64' '-mintty' '-c' ('{4} [ -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)
 }
 
 
@@ -400,3 +425,7 @@ if ((Get-Process -ID $PID).ProcessName.StartsWith("bootstrap-haskell")) {
   # E5VhEwLBnwzWrvLKtdEclhgUCo5Tq87QMXVdgX4aRmunl4ZE+Q==
 # SIG # End signature block
 
+
+
+
+

ghcup-0.0.5.yaml

@@ -2060,8 +2060,8 @@ ghcupDownloads:
         A_ARM64:
           Linux_UnknownLinux:
             unknown_versioning:
-              dlUri: https://downloads.haskell.org/~ghcup/0.1.15.2/aarch64-linux-ghcup-0.1.15.2
+              dlUri: https://downloads.haskell.org/~ghcup/0.1.15.2/aarch64-linux-ghcup-0.1.15.2-r2
-              dlHash: d91b7a5416f292f2cf813824eb419f76ad9976d258cee3581123cb6eb01db9a7
+              dlHash: d67702f7c9e3586e85ed7c1bd09b7544da55bd1d3b4a961a07018348f78cf76b
           Darwin:
             unknown_versioning:
               dlUri: https://downloads.haskell.org/~ghcup/0.1.15.2/aarch64-apple-darwin-ghcup-0.1.15.2
@@ -2120,8 +2120,17 @@ ghcupDownloads:
         - old
       viChangeLog: https://github.com/commercialhaskell/stack/blob/master/ChangeLog.md#v251
       viPostInstall: &stack-post |
-        Stack manages GHC versions internally by default. In order to make it use ghcup installed GHC versions have a look at the options 'system-ghc', 'compiler-check' and 'compiler': https://docs.haskellstack.org/en/stable/yaml_configuration/#system-ghc
+        Stack manages GHC versions internally by default. In order to make it use ghcup installed
-        Additionally, you should upgrade stack only through ghcup.
+        GHC versions you can run the following commands:
+          stack config set install-ghc false --global
+          stack config set system-ghc  true  --global
+        
+        On windows, you may find the following config options useful too:
+          skip-msys, extra-path, extra-include-dirs, extra-lib-dirs
+
+        Also check out: https://docs.haskellstack.org/en/stable/yaml_configuration
+
+        !!! Additionally, you should upgrade stack only through ghcup and not use 'stack upgrade' !!!
       viArch:
         A_64:
           Linux_UnknownLinux:

ghcup.cabal

@@ -43,9 +43,7 @@ flag internal-downloader
   manual:      True
 
 flag tar
-  description:
+  description: Use tar-bytestring instead of libarchive.
-    Use tar-bytestring instead of libarchive.
-
   default:     False
   manual:      True
 
@@ -142,7 +140,7 @@ library
     , uri-bytestring        ^>=0.3.2.2
     , utf8-string           ^>=1.0
     , vector                ^>=0.12
-    , versions              ^>=4.0.1
+    , versions              >=4.0.1      && <5.1
     , word8                 ^>=0.1.3
     , yaml                  ^>=0.11.4.0
     , zip                   ^>=1.7.1
@@ -226,7 +224,7 @@ executable ghcup
     , text                  ^>=1.2.4.0
     , uri-bytestring        ^>=0.3.2.2
     , utf8-string           ^>=1.0
-    , versions              ^>=4.0.1
+    , versions              >=4.0.1    && <5.1
 
   if flag(internal-downloader)
     cpp-options: -DINTERNAL_DOWNLOADER
@@ -294,7 +292,7 @@ executable ghcup-gen
     , text                  ^>=1.2.4.0
     , transformers          ^>=0.5
     , uri-bytestring        ^>=0.3.2.2
-    , versions              ^>=4.0.1
+    , versions              >=4.0.1    && <5.1
     , yaml                  ^>=0.11.4.0
 
   if flag(tar)
@@ -338,4 +336,4 @@ test-suite ghcup-test
     , quickcheck-arbitrary-adt  ^>=0.3.1.0
     , text                      ^>=1.2.4.0
     , uri-bytestring            ^>=0.3.2.2
-    , versions                  ^>=4.0.1
+    , versions                  >=4.0.1   && <5.1

lib/GHCup/Utils/Logger.hs

@@ -20,6 +20,7 @@ import           GHCup.Utils.String.QQ
 import           Control.Monad
 import           Control.Monad.IO.Class
 import           Control.Monad.Logger
+import           Data.Char               ( ord )
 import           Prelude                 hiding ( appendFile )
 import           System.Console.Pretty
 import           System.FilePath
@@ -43,20 +44,33 @@ myLoggerT LoggerConfig {..} loggingt = runLoggingT loggingt mylogger
   mylogger :: Loc -> LogSource -> LogLevel -> LogStr -> IO ()
   mylogger _ _ level str' = do
     -- color output
+    let style' = case level of
+          LevelDebug   -> style Bold . color Blue
+          LevelInfo    -> style Bold . color Green
+          LevelWarn    -> style Bold . color Yellow
+          LevelError   -> style Bold . color Red
+          LevelOther _ -> id
     let l = case level of
-          LevelDebug   -> toLogStr (style Bold $ color Blue "[ Debug ]")
+          LevelDebug   -> toLogStr (style' "[ Debug ]")
-          LevelInfo    -> toLogStr (style Bold $ color Green "[ Info  ]")
+          LevelInfo    -> toLogStr (style' "[ Info  ]")
-          LevelWarn    -> toLogStr (style Bold $ color Yellow "[ Warn  ]")
+          LevelWarn    -> toLogStr (style' "[ Warn  ]")
-          LevelError   -> toLogStr (style Bold $ color Red "[ Error ]")
+          LevelError   -> toLogStr (style' "[ Error ]")
           LevelOther t -> toLogStr "[ " <> toLogStr t <> toLogStr " ]"
-    let out = fromLogStr (l <> toLogStr " " <> str' <> toLogStr "\n")
+    let strs = fmap toLogStr . B.split (fromIntegral $ ord '\n') . fromLogStr $ str'
+    let out = case strs of
+                [] -> B.empty
+                (x:xs) -> fromLogStr
+                  . foldr (\a b -> a <> toLogStr "\n" <> b) mempty
+                  . ((l <> toLogStr " " <> x) :)
+                  . fmap (\line' -> toLogStr (style' "[ ...   ] ") <> line' )
+                  $ xs
 
     when (lcPrintDebug || (not lcPrintDebug && (level /= LevelDebug)))
       $ colorOutter out
 
     -- raw output
     let lr = case level of
-          LevelDebug   -> toLogStr "Debug: "
+          LevelDebug   -> toLogStr "Debug:"
           LevelInfo    -> toLogStr "Info:"
           LevelWarn    -> toLogStr "Warn:"
           LevelError   -> toLogStr "Error:"

www/ghcup.css

@@ -132,13 +132,17 @@ hr {
     margin-bottom: 2em;
 }
 
-#platform-instructions-linux > div > pre,
+span.code {
-#platform-instructions-mac > div > pre,
+	font-family: 'Lucida Console', monospace;
-#platform-instructions-freebsd > div > pre,
+}
-#platform-instructions-win32 > div > pre,
+
-#platform-instructions-win64 > div > pre,
+#platform-instructions-linux div > pre,
-#platform-instructions-default > div > div > pre,
+#platform-instructions-mac div > pre,
-#platform-instructions-unknown > div > div > pre {
+#platform-instructions-freebsd div > pre,
+#platform-instructions-win32 div > pre,
+#platform-instructions-win64 div > pre,
+#platform-instructions-default div > div > pre,
+#platform-instructions-unknown div > div > pre {
     background-color: #515151;
     color: white;
     margin-left: auto;

www/index.html

@@ -44,23 +44,40 @@
       <div id="platform-instructions-win32" class="instructions">
         <p>
             To install Haskell,<br/>run the following in a powershell session (as a non-admin user).
-			<div class="command-button"><pre><span class='ghcup-command' id="ghcup-command-powershell">Set-ExecutionPolicy Bypass -Scope Process -Force; [System.Net.ServicePointManager]::SecurityProtocol = [System.Net.ServicePointManager]::SecurityProtocol -bor 3072; Invoke-WebRequest -UseBasicParsing https://www.haskell.org/ghcup/sh/bootstrap-haskell.ps1 | Invoke-Expression</span></span></pre><button class="tooltip" onclick="copyToClipboardPowershell()"><img src="copy.svg" alt="" /><span class="tooltiptext">Copy to clipboard</span></button></div>
+			<div>
+			<div class="command-button"><pre><span class='ghcup-command' id="ghcup-command-powershell">Set-ExecutionPolicy Bypass -Scope Process -Force;[System.Net.ServicePointManager]::SecurityProtocol = [System.Net.ServicePointManager]::SecurityProtocol -bor 3072;Invoke-Command -ScriptBlock ([ScriptBlock]::Create((Invoke-WebRequest https://www.haskell.org/ghcup/sh/bootstrap-haskell.ps1 -UseBasicParsing))) -ArgumentList $false</span></span></pre><button class="tooltip" onclick="copyToClipboardPowershell()"><img src="copy.svg" alt="" /><span class="tooltiptext">Copy to clipboard</span></button>
+			</div>
+				<p class="other-help">If you want to run an interactive installation, change <span class='code'>$false</span> to <span class='code'>$true</span> at the end of the script.</p>
+			</div>
 		<p>If you're a Windows Subsystem 2 for Linux user run the following in your terminal, then follow the onscreen instructions to install Haskell.
 		</p>
-		<div class="command-button"><pre><span class='ghcup-command'>curl --proto '=https' --tlsv1.2 -sSf https://get-ghcup.haskell.org | sh</span></pre><button class="tooltip" onclick="copyToClipboard()"><img src="copy.svg" alt="" /><span class="tooltiptext">Copy to clipboard</span></button></div>
+		<div>
+		<div class="command-button"><pre><span class='ghcup-command'>curl --proto '=https' --tlsv1.2 -sSf https://get-ghcup.haskell.org | sh</span></pre><button class="tooltip" onclick="copyToClipboard()"><img src="copy.svg" alt="" /><span class="tooltiptext">Copy to clipboard</span></button>
+		</div>
+		<p class="other-help">WSL1 does not work with ghcup, follow  <a href="https://docs.microsoft.com/en-us/windows/wsl/install-win10">the instructions here</a> to upgrade to WSL2 if needed.</p>
+		</div>
         </p>
-		<p class="other-help">WSL1 does not work with ghcup, follow  <a href="https://docs.microsoft.com/en-us/windows/wsl/install-win10">the instructions here</a> to upgrade to WSL2 if needed.</br>You appear to be running Windows 32-bit. If not, <a class="default-platform-button" href="#">display all supported installers</a>.</p>
+        <hr/>
+		<p class="other-help">You appear to be running Windows 32-bit. If not, <a class="default-platform-button" href="#">display all supported installers</a>.</p>
       </div>
 
       <div id="platform-instructions-win64" class="instructions" style="display: none;">
         <p>
             To install Haskell,<br/>run the following in a powershell session (as a non-admin user).
-			<div class="command-button"><pre><span class='ghcup-command'>Set-ExecutionPolicy Bypass -Scope Process -Force; [System.Net.ServicePointManager]::SecurityProtocol = [System.Net.ServicePointManager]::SecurityProtocol -bor 3072; Invoke-WebRequest -UseBasicParsing https://www.haskell.org/ghcup/sh/bootstrap-haskell.ps1 | Invoke-Expression</span></span></pre><button class="tooltip" onclick="copyToClipboardPowershell()"><img src="copy.svg" alt="" /><span class="tooltiptext">Copy to clipboard</span></button></div>
+			<div>
+			<div class="command-button"><pre><span class='ghcup-command'>Set-ExecutionPolicy Bypass -Scope Process -Force;[System.Net.ServicePointManager]::SecurityProtocol = [System.Net.ServicePointManager]::SecurityProtocol -bor 3072;Invoke-Command -ScriptBlock ([ScriptBlock]::Create((Invoke-WebRequest https://www.haskell.org/ghcup/sh/bootstrap-haskell.ps1 -UseBasicParsing))) -ArgumentList $false</span></span></pre><button class="tooltip" onclick="copyToClipboardPowershell()"><img src="copy.svg" alt="" /><span class="tooltiptext">Copy to clipboard</span></button>
+			</div>
+				<p class="other-help">If you want to run an interactive installation, change <span class='code'>$false</span> to <span class='code'>$true</span> at the end of the script.</p>
+			</div>
         </p>
 		<p>If you're a Windows Subsystem 2 for Linux user run the following in your terminal, then follow the onscreen instructions to install Haskell.
 		</p>
-		<div class="command-button"><pre><span class='ghcup-command'>curl --proto '=https' --tlsv1.2 -sSf https://get-ghcup.haskell.org | sh</span></pre><button class="tooltip" onclick="copyToClipboard()"><img src="copy.svg" alt="" /><span class="tooltiptext">Copy to clipboard</span></button></div>
+		<div>
-		<p class="other-help">WSL1 does not work with ghcup, follow  <a href="https://docs.microsoft.com/en-us/windows/wsl/install-win10">the instructions here</a> to upgrade to WSL2 if needed.</br>You appear to be running Windows 64-bit. If not, <a class="default-platform-button" href="#">display all supported installers</a>.</p>
+		<div class="command-button"><pre><span class='ghcup-command'>curl --proto '=https' --tlsv1.2 -sSf https://get-ghcup.haskell.org | sh</span></pre><button class="tooltip" onclick="copyToClipboard()"><img src="copy.svg" alt="" /><span class="tooltiptext">Copy to clipboard</span></button>
+		</div>
+		<p class="other-help">WSL1 does not work with ghcup, follow  <a href="https://docs.microsoft.com/en-us/windows/wsl/install-win10">the instructions here</a> to upgrade to WSL2 if needed.</p>
+		</div>
+		<p class="other-help">You appear to be running Windows 64-bit. If not, <a class="default-platform-button" href="#">display all supported installers</a>.</p>
       </div>
 
       <div id="platform-instructions-unknown" class="instructions" style="display: none;">
@@ -92,7 +109,7 @@
         <div>
           <p>
             If you are running Windows,<br/>run the following in a powershell session (as a non-admin user).
-			<div class="command-button"><pre><span class='ghcup-command'>Set-ExecutionPolicy Bypass -Scope Process -Force; [System.Net.ServicePointManager]::SecurityProtocol = [System.Net.ServicePointManager]::SecurityProtocol -bor 3072; Invoke-WebRequest -UseBasicParsing https://www.haskell.org/ghcup/sh/bootstrap-haskell.ps1 | Invoke-Expression</span></span></pre><button class="tooltip" onclick="copyToClipboardPowershell()"><img src="copy.svg" alt="" /><span class="tooltiptext">Copy to clipboard</span></button></div>
+			<div class="command-button"><pre><span class='ghcup-command'>Set-ExecutionPolicy Bypass -Scope Process -Force;[System.Net.ServicePointManager]::SecurityProtocol = [System.Net.ServicePointManager]::SecurityProtocol -bor 3072;Invoke-Command -ScriptBlock ([ScriptBlock]::Create((Invoke-WebRequest https://www.haskell.org/ghcup/sh/bootstrap-haskell.ps1 -UseBasicParsing))) -ArgumentList $false</span></span></pre><button class="tooltip" onclick="copyToClipboardPowershell()"><img src="copy.svg" alt="" /><span class="tooltiptext">Copy to clipboard</span></button></div>
           </p>
         </div>
 
@@ -111,7 +128,7 @@
         <div>
           <p>
             If you are running Windows,<br/>run the following in a powershell session (as a non-admin user).
-			<div class="command-button"><pre><span class='ghcup-command'>Set-ExecutionPolicy Bypass -Scope Process -Force; [System.Net.ServicePointManager]::SecurityProtocol = [System.Net.ServicePointManager]::SecurityProtocol -bor 3072; Invoke-WebRequest -UseBasicParsing https://www.haskell.org/ghcup/sh/bootstrap-haskell.ps1 | Invoke-Expression</span></span></pre><button class="tooltip" onclick="copyToClipboardPowershell()"><img src="copy.svg" alt="" /><span class="tooltiptext">Copy to clipboard</span></button></div>
+			<div class="command-button"><pre><span class='ghcup-command'>Set-ExecutionPolicy Bypass -Scope Process -Force;[System.Net.ServicePointManager]::SecurityProtocol = [System.Net.ServicePointManager]::SecurityProtocol -bor 3072;Invoke-Command -ScriptBlock ([ScriptBlock]::Create((Invoke-WebRequest https://www.haskell.org/ghcup/sh/bootstrap-haskell.ps1 -UseBasicParsing))) -ArgumentList $false</span></span></pre><button class="tooltip" onclick="copyToClipboardPowershell()"><img src="copy.svg" alt="" /><span class="tooltiptext">Copy to clipboard</span></button></div>
           </p>
         </div>