Redo ghc-install.sh, fixes #913

docs/guide.md

@@ -281,9 +281,14 @@ url-source:
             sha256: 216b76b7c6383e6ad9ba82533f323f8550e52893a8b9fa33c7b9dc4201ac766a
 ```
 
+#### Caveats
+
 The main caveat with using this method is that there's no guarantee that GHCup will pick a compatible HLS bindist
 when you try to install HLS.
 
+Another potential usability issue is that the `latest` and `recommended` shorthands won't work anymore, since
+Stack metadata doesn't have a concept of those and we don't try to be smart when combining the metadatas.
+
 ### Windows
 
 On windows, you may find the following config options useful too:

docs/install.md

@@ -140,16 +140,18 @@ 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>9.6.2</td><td><span style="color:blue">latest</span>, base-4.18.0.0</td></tr>
+<tr><td>9.8.1</td><td><span style="color:blue">latest</span>, base-4.19.0.0</td></tr>
+<tr><td>9.6.3</td><td>base-4.18.1.0</td></tr>
+<tr><td>9.6.2</td><td>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>9.4.7</td><td><span style="color:green">recommended</span>, 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>9.2.8</td><td>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>base-4.16.4.0</td></tr>
@@ -190,7 +192,8 @@ GHCup supports the following tools, which are also known as the **Haskell Toolch
 <table>
 <thead><tr><th>Cabal Version</th><th>Tags</th></tr></thead>
 <tbody>
-<tr><td>3.10.1.0</td><td><span style="color:blue">latest</span></td></tr>
+<tr><td>3.10.2.0</td><td><span style="color:blue">latest</span></td></tr>
+<tr><td>3.10.1.0</td><td></td></tr>
 <tr><td>3.8.1.0</td><td></td></tr>
 <tr><td>3.6.2.0</td><td><span style="color:green">recommended</span></td></tr>
 <tr><td>3.6.0.0</td><td></td></tr>
@@ -234,8 +237,9 @@ 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>2.11.1</td><td><span style="color:blue">latest</span></td></tr>
+<tr><td>2.13.1</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>2.11.1</td><td><span style="color:green">recommended</span></td></tr>
+<tr><td>2.9.3</td><td></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>

scripts/hooks/stack/ghc-install.sh

@@ -9,8 +9,8 @@ set -eu
 
 case $HOOK_GHC_TYPE in
     bindist)
-        ghcdir=$(ghcup whereis --directory ghc "$HOOK_GHC_VERSION" || ghcup run --ghc "$HOOK_GHC_VERSION" --install) || exit 3
+        ghc_path=$(ghcup whereis ghc "$HOOK_GHC_VERSION" || { ghcup install ghc "$HOOK_GHC_VERSION" >/dev/null && ghcup whereis ghc "$HOOK_GHC_VERSION" ; }) || { >&2 echo "Installing $HOOK_GHC_VERSION via ghcup failed" exit 3 ;}
-        printf "%s/ghc" "${ghcdir}"
+        printf "%s" "${ghc_path}"
         ;;
     git)
         # TODO: should be somewhat possible