CI: cache-deps: GHC 8.6.5 build does not handle all deps at once

Author: Anton-Latukha

.github/workflows/cache-deps.yml

@@ -103,12 +103,20 @@ jobs:
                         ${{ env.cache-name }}-${{ runner.os }}-${{ matrix.ghc }}-${{ env.HACKAGE_TIMESTAMP }}-
                         ${{ env.cache-name }}-${{ runner.os }}-${{ matrix.ghc }}-
 
-      - if: runner.os != 'Windows'
+      - if: ( runner.os != 'Windows' ) && ( matrix.ghc != '8.6.5' )
         name: Build
         run: cabal v2-build --enable-tests --enable-benchmarks --only-dependencies
 
       # repeating builds to workaround segfaults in windows and ghc-8.8.4
       # separate build steps for platforms are needed because if Windows build aborts once - it returns the error code but despite how it is on other platforms - repeated compilation may succeed.
-      - if: runner.os == 'Windows'
+      - if: runner.os == 'Windows'  && ( matrix.ghc != '8.6.5' )
         name: (Windows) Restart build 3 times
         run: cabal v2-build --enable-tests --enable-benchmarks --only-dependencies || cabal v2-build --enable-tests --enable-benchmarks --only-dependencies || cabal v2-build --enable-tests --enable-benchmarks --only-dependencies
+
+      - if: ( runner.os != 'Windows' ) && ( matrix.ghc == '8.6.5' )
+        name: Build
+        run: cabal v2-build --only-dependencies
+
+      - if: ( runner.os == 'Windows' ) && ( matrix.ghc == '8.6.5' )
+        name: Build
+        run: cabal v2-build --only-dependencies