@@ -120,8 +120,12 @@ jobs:
120120 cat dist-newstyle/cache/plan.json | jq -r '."install-plan"[] | select(.style != "local") | .id' | sort | uniq > dependencies.txt
121121
122122 # Use a fresh cache each month
123- - name : Store month number as environment variable used in cache version
124- run : echo "MONTHNUM=$(date -u '+%m')" >> $GITHUB_ENV
123+ - name : Store month number and GHC version as environment variables used in cache version
124+ run : |
125+ cat <<EOF >> $GITHUB_ENV
126+ MONTHNUM=$(date -u '+%m')
127+ GHC=$(ghc --numeric-version)
128+ EOF
125129
126130 # From the dependency list we restore the cached dependencies.
127131 # We use the hash of `dependencies.txt` as part of the cache key because that will be stable
@@ -134,10 +138,10 @@ jobs:
134138 ${{ steps.setup-haskell.outputs.cabal-store }}
135139 dist-newstyle
136140 key :
137- cache-${{ env.CABAL_CACHE_VERSION }}-${{ runner.os }}-${{ matrix.ghc }}-${{ env.MONTHNUM }}-${{ hashFiles('dependencies.txt') }}
141+ cache-${{ env.CABAL_CACHE_VERSION }}-${{ runner.os }}-${{ env.GHC }}-${{ env.MONTHNUM }}-${{ hashFiles('dependencies.txt') }}
138142 # try to restore previous cache from this month if there's no cache for the dependencies set
139143 restore-keys : |
140- cache-${{ env.CABAL_CACHE_VERSION }}-${{ runner.os }}-${{ matrix.ghc }}-${{ env.MONTHNUM }}-
144+ cache-${{ env.CABAL_CACHE_VERSION }}-${{ runner.os }}-${{ env.GHC }}-${{ env.MONTHNUM }}-
141145
142146 # Now we install the dependencies. If the cache was found and restored in the previous step,
143147 # this should be a no-op, but if the cache key was not found we need to build stuff so we can
@@ -180,7 +184,7 @@ jobs:
180184 if : ${{ failure() }}
181185 uses : actions/upload-artifact@v4
182186 with :
183- name : failed-test-workspaces-${{ matrix.sys.os }}-ghc${{ matrix.ghc }}-cabal${{ matrix.cabal }}.tgz
187+ name : failed-test-workspaces-${{ matrix.sys.os }}-ghc${{ env.GHC }}-cabal${{ matrix.cabal }}.tgz
184188 path : ${{ runner.temp }}/workspaces.tgz
185189
186190 - name : " Tar artifacts"
@@ -211,7 +215,7 @@ jobs:
211215 if : ${{ always() }}
212216 continue-on-error : true
213217 with :
214- name : chairman-test-artifacts-${{ matrix.sys.os }}-${{ matrix.ghc }}
218+ name : chairman-test-artifacts-${{ matrix.sys.os }}-${{ env.GHC }}
215219 path : ${{ runner.temp }}/chairman/
216220
217221 # Uncomment the following back in for debugging. Remember to launch a `pwsh` from
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