ci: linux-x64: ghc 9.0.2; avoid yesod/aeson breakage

Author: simonmichael

.github/workflows/linux-x64.yml

@@ -21,12 +21,11 @@ jobs:
     container: alpine:edge
     steps:
 
-    - name: Setup environment
-      # Borrowed from fossas/haskell-static-alpine, copied here for transparency
+    - name: Set up environment
       run: |
         apk --no-cache add binutils-gold curl gcc g++ git gmp-dev ncurses-dev ncurses-static libffi-dev make xz tar perl zlib-dev zlib-static
         mkdir -p ~/.ghcup/bin && curl https://downloads.haskell.org/~ghcup/x86_64-linux-ghcup > ~/.ghcup/bin/ghcup && chmod +x ~/.ghcup/bin/ghcup
-        ~/.ghcup/bin/ghcup install ghc 9.0.1 && ~/.ghcup/bin/ghcup set ghc 9.0.1 && ~/.ghcup/bin/ghcup install cabal
+        ~/.ghcup/bin/ghcup install ghc 9.0.2 && ~/.ghcup/bin/ghcup set ghc 9.0.2 && ~/.ghcup/bin/ghcup install cabal
         echo "$HOME/.ghcup/bin/" >> $GITHUB_PATH
 
     - name: Check out
@@ -35,11 +34,11 @@ jobs:
       with: 
         fetch-depth: 0  
 
-    - name: Update cabal
+    - name: cabal update
       run: cabal update
 
     - name: Build on alpine
-      run: cabal build --enable-executable-static all
+      run: cabal build --enable-executable-static all --constraint 'aeson < 2'  # avoid yesod/aeson breakage
 
     - name: Extract and strip binaries
       run: |