Merge pull request #380 from michaelpj/mpj/ghc-matrix

Update GHC build matrix

Author: michaelpj

.github/workflows/haskell.yml

@@ -9,11 +9,8 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ghc: ['9.0.1', '8.10.4', '8.8.3', '8.6.5', '8.4.4']
+        ghc: ['9.0.1', '8.10.7', '8.8.4', '8.6.5']
         os: [ubuntu-latest, macOS-latest, windows-latest]
-        exclude:
-          - os: windows-latest
-            ghc: '8.8.3' # fails due to segfault
 
     steps:
     - uses: actions/checkout@v2