Hack around CI problems by sudo chown and disabling cache for Windows validate (#8739)

* Try to fix ghcup cache in CI via sudo chmod

* Revert "Try to fix ghcup cache in CI via sudo chmod"

This reverts commit 0bb71d1.

* Try not caching store in validate jobs to avoid double package bugs

* Revert "Try not caching store in validate jobs to avoid double package bugs"

This reverts commit b3f3782.

* Try not to cache store on Windows in validate jobs

to avoid double directory package bugs.

* Revert "Revert "Try to fix ghcup cache in CI via sudo chmod""

This reverts commit b3a843a.

* Try sudo only on (new) Linux, where it should be available

* Also change the user

* Document the particular hack snippets in validate.yml

* Add an extra diagnostic ls for ghcup dirs

* Also hack the other affected CI scripts

* Also print the version of ghcup used for debugging

(cherry picked from commit 22dcb3c)

Author: Mikolaj

.github/workflows/bootstrap.yml

@@ -35,9 +35,20 @@ jobs:
           restore-keys: bootstrap-${{ runner.os }}-${{ matrix.ghc }}-20221115-
 
       - uses: actions/checkout@v3
+      # See https://github.com/haskell/cabal/pull/8739
+      - name: Sudo chmod to permit ghcup to update its cache
+        run: |
+          if [[ "${{ runner.os }}" == "Linux" ]]; then
+            sudo ls -lah /usr/local/.ghcup/cache
+            sudo mkdir -p /usr/local/.ghcup/cache
+            sudo ls -lah /usr/local/.ghcup/cache
+            sudo chown -R $USER /usr/local/.ghcup
+            sudo chmod -R 777 /usr/local/.ghcup
+          fi
       - name: bootstrap.py
         run: |
           GHC_VERSION=${{ matrix.ghc }}
+          ghcup --version
           ghcup config set cache true
           ghcup install ghc $GHC_VERSION
 

.github/workflows/quick-jobs.yml

@@ -28,8 +28,19 @@ jobs:
         with:
           path: ~/.cabal/store
           key: linux-store-meta
+      # See https://github.com/haskell/cabal/pull/8739
+      - name: Sudo chmod to permit ghcup to update its cache
+        run: |
+          if [[ "${{ runner.os }}" == "Linux" ]]; then
+            sudo ls -lah /usr/local/.ghcup/cache
+            sudo mkdir -p /usr/local/.ghcup/cache
+            sudo ls -lah /usr/local/.ghcup/cache
+            sudo chown -R $USER /usr/local/.ghcup
+            sudo chmod -R 777 /usr/local/.ghcup
+          fi
       - name: ghcup
         run: |
+          ghcup --version
           ghcup config set cache true
           ghcup install ghc recommended
           ghcup set ghc recommended
@@ -66,8 +77,19 @@ jobs:
         with:
           path: ~/.cabal/store
           key: linux-store-doctest
+      # See https://github.com/haskell/cabal/pull/8739
+      - name: Sudo chmod to permit ghcup to update its cache
+        run: |
+          if [[ "${{ runner.os }}" == "Linux" ]]; then
+            sudo ls -lah /usr/local/.ghcup/cache
+            sudo mkdir -p /usr/local/.ghcup/cache
+            sudo ls -lah /usr/local/.ghcup/cache
+            sudo chown -R $USER /usr/local/.ghcup
+            sudo chmod -R 777 /usr/local/.ghcup
+          fi
       - name: ghcup
         run: |
+          ghcup --version
           ghcup config set cache true
           ghcup install ghc recommended
           ghcup set ghc recommended

.github/workflows/validate.yml

@@ -57,6 +57,16 @@ jobs:
 
       - uses: actions/checkout@v3
 
+      # See https://github.com/haskell/cabal/pull/8739
+      - name: Sudo chmod to permit ghcup to update its cache
+        run: |
+          if [[ "${{ runner.os }}" == "Linux" ]]; then
+            sudo ls -lah /usr/local/.ghcup/cache
+            sudo mkdir -p /usr/local/.ghcup/cache
+            sudo ls -lah /usr/local/.ghcup/cache
+            sudo chown -R $USER /usr/local/.ghcup
+            sudo chmod -R 777 /usr/local/.ghcup
+          fi
       - uses: haskell/actions/setup@v2
         id: setup-haskell
         with:
@@ -65,7 +75,10 @@ jobs:
 
       #  See the following link for a breakdown of the following step
       #  https://github.com/haskell/actions/issues/7#issuecomment-745697160
-      - uses: actions/cache@v2
+      #
+      # See https://github.com/haskell/cabal/pull/8739 for why Windows is excluded
+      - if: ${{ runner.os != 'Windows' }}
+        uses: actions/cache@v2
         with:
           # validate.sh uses a special build dir
           path: |