Add user choice for prepend/append of PATH

Fixes #118

bootstrap-haskell

@@ -201,10 +201,13 @@ download_ghcup() {
 			;;
 	esac
 
-  edo mkdir -p "${GHCUP_DIR}"
+	edo mkdir -p "${GHCUP_DIR}"
+
+	# we may overwrite this in adjust_bashrc
 	cat <<-EOF > "${GHCUP_DIR}"/env || die "Failed to create env file"
 		export PATH="\$HOME/.cabal/bin:${GHCUP_BIN}:\$PATH"
 		EOF
+
 	# shellcheck disable=SC1090
     edo . "${GHCUP_DIR}"/env
     eghcup upgrade
@@ -238,9 +241,9 @@ adjust_bashrc() {
 
 	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 "Do 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 "[P] Yes, prepend  [A] Yes, append  [N] No  [?] Help (default is \"P\")."
 	warn ""
 
 	while true; do
@@ -250,16 +253,37 @@ adjust_bashrc() {
 			next_answer="yes"
 		fi
 
+		case $next_answer in
+			[Pp]* | "")
+				cat <<-EOF > "${GHCUP_DIR}"/env || die "Failed to create env file"
+					export PATH="\$HOME/.cabal/bin:${GHCUP_BIN}:\$PATH"
+					EOF
+				;;
+			[Aa]*)
+				cat <<-EOF > "${GHCUP_DIR}"/env || die "Failed to create env file"
+					export PATH="\$HOME/.cabal/bin:\$PATH:${GHCUP_BIN}"
+					EOF
+				;;
+			*) ;;
+		esac
+
 		case $next_answer in
 			[Nn]*)
 				return ;;
-			[Yy]* | "")
+			[Pp]* | [Aa]* | "")
 				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}"
+						mkdir -p "${GHCUP_PROFILE_FILE%/*}"
+						sed -i -e '/# ghcup-env$/ s/^#*/#/' "${GHCUP_PROFILE_FILE}"
+						case $next_answer in
+							[Pp]* | "")
+								echo "set -q GHCUP_INSTALL_BASE_PREFIX[1]; or set GHCUP_INSTALL_BASE_PREFIX \$HOME ; set -gx PATH \$HOME/.cabal/bin $GHCUP_BIN \$PATH # ghcup-env" >> "${GHCUP_PROFILE_FILE}"
+								;;
+							[Aa]*)
+								echo "set -q GHCUP_INSTALL_BASE_PREFIX[1]; or set GHCUP_INSTALL_BASE_PREFIX \$HOME ; set -gx PATH \$HOME/.cabal/bin \$PATH $GHCUP_BIN # ghcup-env" >> "${GHCUP_PROFILE_FILE}"
+								;;
+						esac
 						break ;;
 					bash)
 						sed -i -e '/# ghcup-env$/ s/^#*/#/' "${GHCUP_PROFILE_FILE}"
@@ -285,7 +309,8 @@ adjust_bashrc() {
 			*)
 				echo "Possible choices are:"
 				echo
-				echo "Y - Yes, update my \"${GHCUP_PROFILE_FILE}\" (default)"
+				echo "P - Yes, prepend to PATH, taking precedence (default)"
+				echo "A - Yes, append to PATH"
 				echo "N - No, don't mess with my configuration"
 				echo
 				echo "Please make your choice and press ENTER."

bootstrap-haskell.ps1

@@ -150,6 +150,15 @@ 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) {

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-r2
-              dlHash: d67702f7c9e3586e85ed7c1bd09b7544da55bd1d3b4a961a07018348f78cf76b
+              dlUri: https://downloads.haskell.org/~ghcup/0.1.15.2/aarch64-linux-ghcup-0.1.15.2-r1
+              dlHash: d853372440f3d43babbb868fad399811241760f2233829c92403fcbea8c547ec
           Darwin:
             unknown_versioning:
               dlUri: https://downloads.haskell.org/~ghcup/0.1.15.2/aarch64-apple-darwin-ghcup-0.1.15.2
@@ -2069,8 +2069,8 @@ ghcupDownloads:
         A_ARM:
           Linux_UnknownLinux:
             unknown_versioning:
-              dlUri: https://downloads.haskell.org/~ghcup/0.1.15.2/armv7-linux-ghcup-0.1.15.2
-              dlHash: 03a4af5ed895ada1dd21f4cc3f64dc9078a5bf4268313021d004c04bea7f9c2e
+              dlUri: https://downloads.haskell.org/~ghcup/0.1.15.2/armv7-linux-ghcup-0.1.15.2-r1
+              dlHash: f8add9b39e1f7d0f03904dc69a8683259972a4472432c1ade27d918c39a4a874
   HLS:
     1.1.0:
       viTags: []
@@ -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
-        Additionally, you should upgrade stack only through ghcup.
+        Stack manages GHC versions internally by default. In order to make it use ghcup installed
+        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:

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 ]")
-          LevelInfo    -> toLogStr (style Bold $ color Green "[ Info  ]")
-          LevelWarn    -> toLogStr (style Bold $ color Yellow "[ Warn  ]")
-          LevelError   -> toLogStr (style Bold $ color Red "[ Error ]")
+          LevelDebug   -> toLogStr (style' "[ Debug ]")
+          LevelInfo    -> toLogStr (style' "[ Info  ]")
+          LevelWarn    -> toLogStr (style' "[ Warn  ]")
+          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:"