Build and run test with the same GHC version

As otherwise it leads to test failures in:

* cabal-testsuite/PackageTests/ConfigFile/T8487/cabal.test.hs
* cabal-testsuite/PackageTests/HaddockProject/haddock-project.test.hs

Author: hasufell

.github/scripts/test.bash

@@ -18,17 +18,15 @@ case "${TARBALL_EXT}" in
 esac
 cd ..
 
-ghcup --no-verbose install ghc --set --install-targets "${GHC_TARGETS}" "${GHC_VERSION}"
 ghcup --no-verbose install ghc --install-targets "${GHC_TEST_TARGETS}" "${GHC_TEST_VERSION}"
 
 cabal update
 
 # TODO: we want to avoid building here... we should just
 # be using the previously built 'cabal-tests' binary
 # Also see https://github.com/haskell/cabal/issues/11048
-cabal run -w "ghc-${GHC_VERSION}" ${ADD_CABAL_ARGS} cabal-testsuite:cabal-tests -- \
+cabal run -w "ghc-${GHC_TEST_VERSION}" ${ADD_CABAL_ARGS} cabal-testsuite:cabal-tests -- \
   --with-cabal "$(pwd)/out/cabal" \
-  --with-ghc "ghc-${GHC_TEST_VERSION}" \
   --intree-cabal-lib "$(pwd)" \
   --test-tmp "$(pwd)/testdb" \
   --skip-setup-tests \

.github/workflows/reusable-release.yml

@@ -25,9 +25,8 @@ env:
   GHC_VERSION: ${{ inputs.ghc }}
   GHC_TARGETS: ${{ inputs.ghc_targets }}
   # This shouldn't be necessary, but cabal developers
-  # whant to build with 9.10.2, which causes test failures
-  # when used as runtime GHC version as well. So we need a different
-  # runtime GHC version than the build GHC.
+  # want to build with 9.10.2, which causes test failures
+  # when used as runtime GHC version as well.
   GHC_TEST_VERSION: 9.6.7
   GHC_TEST_TARGETS: "install_bin install_lib update_package_db"
   CABAL_VERSION: ${{ inputs.cabal }}