Apply suggestions from code review

Co-authored-by: fendor <fendor@users.noreply.github.com>

Author: soulomoon

.github/workflows/bench.yml

@@ -27,7 +27,11 @@ jobs:
           # since benchmark are expansive.
           # choosing the two latest are easier to maintain and more forward looking
           # see discussion https://github.com/haskell/haskell-language-server/pull/4118
-          # also possible to add more GHCs if we performs better in the future.
+          # Benchmarking only the two latest GHCs we support now
+          # since benchmark are expensive.
+          # Choosing the two latest is easier to maintain and more forward looking.
+          # See discussion https://github.com/haskell/haskell-language-server/pull/4118
+          # also possible to add more GHCs if we perform better in the future.
           echo 'versions=["9.12", "9.14"]' >> $GITHUB_OUTPUT
       - id: skip_check
         uses: fkirc/skip-duplicate-actions@v5.3.1

cabal.project

@@ -51,8 +51,6 @@ constraints:
 allow-newer:
   cabal-install-parsers:Cabal-syntax,
 
-if impl(ghc >= 9.15)
-  benchmarks: False
 
 if impl(ghc >= 9.13)
   allow-newer:

shake-bench/shake-bench.cabal

@@ -16,8 +16,6 @@ source-repository head
     location: https://github.com/haskell/haskell-language-server.git
 
 library
-  if impl(ghc >= 9.15)
-    buildable: False
   exposed-modules:  Development.Benchmark.Rules
   hs-source-dirs:   src
   build-depends: