Use setup-build action

Author: jneira

.github/workflows/build.yml

@@ -41,11 +41,10 @@ jobs:
         apk add --no-cache zlib zlib-dev zlib-static gmp gmp-dev ncurses-static
     - uses: actions/checkout@v2
 
-    - uses: haskell/actions/setup@v1
-      with:
-        ghc-version  : ${{ matrix.ghc   }}
-        cabal-version: ${{ matrix.cabal }}
-        enable-stack: false
+    - uses: ./.github/actions/setup-build
+        with:
+          ghc: ${{ matrix.ghc }}
+          os:  ${{ runner.os }}
 
     # some alpines come with integer-simple instead of integer-gmp
     - name: Force integer-simple
@@ -55,27 +54,6 @@ jobs:
           echo -e 'package blaze-textual\n    flags: +integer-simple' >> cabal.project.local
         fi
 
-    - name: Use modified cabal.project
-      env:
-        GHCVER: ${{ matrix.ghc }}
-      run: |
-        GHCVER2=${GHCVER//./}
-        ALT_PROJECT_FILE_MINOR=cabal-ghc${GHCVER2}.project
-        ALT_PROJECT_FILE_MAJOR=cabal-ghc${GHCVER2:0:2}.project
-        if [[ -f "$ALT_PROJECT_FILE_MINOR" ]]; then
-          rm -f -v cabal.project && cp -v "$ALT_PROJECT_FILE_MINOR" cabal.project
-        elif [[ -f "$ALT_PROJECT_FILE_MAJOR" ]]; then
-          rm -f -v cabal.project && cp -v "$ALT_PROJECT_FILE_MAJOR" cabal.project
-        fi
-
-    - name: Shorten binary names
-      run: |
-        sed -i.bak -e 's/haskell-language-server/hls/g' \
-                   -e 's/haskell_language_server/hls/g' \
-                   haskell-language-server.cabal cabal.project
-        sed -i.bak -e 's/Paths_haskell_language_server/Paths_hls/g' \
-                   src/**/*.hs exe/*.hs
-
     - name: (Windows) Platform specifics
       if: matrix.os == 'windows-latest'
       env:
@@ -99,12 +77,6 @@ jobs:
       run: |
         echo "GHC_VERSION=$GHC_VER" >> $GITHUB_ENV
 
-    - name: (Windows, GHC 8.8.4) Workaround segfaults
-      if: matrix.ghc == '8.8.4' && matrix.os == 'windows-latest'
-      run: |
-          echo "package floskell" >> cabal.project
-          echo "  ghc-options: -O0" >> cabal.project
-
     - name: Build the server
       # Try building it twice in case of flakey builds on Windows
       run: |