Support for GHC 9 in basement

.github/workflows/main.yml

@@ -19,9 +19,6 @@ jobs:
     runs-on: ${{ matrix.config.os }}
     steps:
       - uses: actions/checkout@v1
-      - name: Install Stack
-        if: matrix.config.os != 'ubuntu-latest'
-        run: curl -sSL https://get.haskellstack.org/ | sh
 
       - name: cache programs
         id: cache-programs

basement/Basement/Block/Base.hs

@@ -36,7 +36,8 @@ module Basement.Block.Base
     , unsafeRecast
     ) where
 
-import           GHC.Prim
+import           GHC.Exts        (unsafeCoerce#)
+import           GHC.Prim hiding (unsafeCoerce#)
 import           GHC.Types
 import           GHC.ST
 import           GHC.IO

basement/Basement/BoxedArray.hs

@@ -74,7 +74,8 @@ module Basement.BoxedArray
     , builderBuild_
     ) where
 
-import           GHC.Prim
+import           GHC.Exts        (unsafeCoerce#)
+import           GHC.Prim hiding (unsafeCoerce#)
 import           GHC.Types
 import           GHC.ST
 import           Data.Proxy

basement/Basement/FinalPtr.hs

@@ -25,7 +25,7 @@ module Basement.FinalPtr
     ) where
 
 import GHC.Ptr
-import GHC.ForeignPtr
+import GHC.ForeignPtr hiding (FinalPtr)
 import GHC.IO
 import Basement.Monad
 import Basement.Compat.Primitive

basement/Basement/Monad.hs

@@ -33,7 +33,8 @@ import           GHC.ST
 import           GHC.STRef
 import           GHC.IORef
 import           GHC.IO
-import           GHC.Prim
+import           GHC.Exts        (unsafeCoerce#)
+import           GHC.Prim hiding (unsafeCoerce#)
 import           Basement.Compat.Base (Exception, (.), ($), Applicative, Monad)
 
 -- | Primitive monad that can handle mutation.