disable tests for older version of GHC

those older versions depend on ghc-heap-view which depends on ghc. this is a
fundamental package whose deps cannot be upgraded as part of an install plan.
unfortunately, newer contrib packages depend on a newer 'binary' package,
which is one of those packages that cannot be upgraded.

Author: infinity0

.github/workflows/haskell-ci.yml

@@ -178,7 +178,7 @@ jobs:
           echo "packages: $GITHUB_WORKSPACE/source/strict-containers" >> cabal.project
           echo "packages: $GITHUB_WORKSPACE/source/strict-containers-lens" >> cabal.project
           echo "packages: $GITHUB_WORKSPACE/source/strict-containers-serialise" >> cabal.project
-          echo "packages: $GITHUB_WORKSPACE/source/strict-containers-tests" >> cabal.project
+          if [ $((HCNUMVER >= 80600)) -ne 0 ] ; then echo "packages: $GITHUB_WORKSPACE/source/strict-containers-tests" >> cabal.project ; fi
           cat cabal.project
       - name: sdist
         run: |
@@ -204,15 +204,15 @@ jobs:
           echo "packages: ${PKGDIR_strict_containers}" >> cabal.project
           echo "packages: ${PKGDIR_strict_containers_lens}" >> cabal.project
           echo "packages: ${PKGDIR_strict_containers_serialise}" >> cabal.project
-          echo "packages: ${PKGDIR_strict_containers_tests}" >> cabal.project
+          if [ $((HCNUMVER >= 80600)) -ne 0 ] ; then echo "packages: ${PKGDIR_strict_containers_tests}" >> cabal.project ; fi
           echo "package strict-containers" >> cabal.project
           echo "    ghc-options: -Werror=missing-methods" >> cabal.project
           echo "package strict-containers-lens" >> cabal.project
           echo "    ghc-options: -Werror=missing-methods" >> cabal.project
           echo "package strict-containers-serialise" >> cabal.project
           echo "    ghc-options: -Werror=missing-methods" >> cabal.project
-          echo "package strict-containers-tests" >> cabal.project
-          echo "    ghc-options: -Werror=missing-methods" >> cabal.project
+          if [ $((HCNUMVER >= 80600)) -ne 0 ] ; then echo "package strict-containers-tests" >> cabal.project ; fi
+          if [ $((HCNUMVER >= 80600)) -ne 0 ] ; then echo "    ghc-options: -Werror=missing-methods" >> cabal.project ; fi
           cat >> cabal.project <<EOF
           EOF
           $HCPKG list --simple-output --names-only | perl -ne 'for (split /\s+/) { print "constraints: $_ installed\n" unless /^(binary|containers|ghc-heap|strict-containers|strict-containers-lens|strict-containers-serialise|strict-containers-tests|text)$/; }' >> cabal.project.local
@@ -245,8 +245,8 @@ jobs:
           ${CABAL} -vnormal check
           cd ${PKGDIR_strict_containers_serialise} || false
           ${CABAL} -vnormal check
-          cd ${PKGDIR_strict_containers_tests} || false
-          ${CABAL} -vnormal check
+          if [ $((HCNUMVER >= 80600)) -ne 0 ] ; then cd ${PKGDIR_strict_containers_tests} || false ; fi
+          if [ $((HCNUMVER >= 80600)) -ne 0 ] ; then ${CABAL} -vnormal check ; fi
       - name: haddock
         run: |
           $CABAL v2-haddock --haddock-all $ARG_COMPILER --with-haddock $HADDOCK $ARG_TESTS $ARG_BENCH all

strict-containers-tests/StrictTests.hs

@@ -7,11 +7,7 @@ module Main (main) where
 import Test.Tasty (TestTree, defaultMain, testGroup)
 import Test.Tasty.HUnit
 
-#if __GLASGOW_HASKELL__ >= 806
 import GHC.Exts.Heap
-#else
-import GHC.HeapView
-#endif
 
 import qualified Data.Strict.HashMap as SHM
 import qualified Data.Strict.IntMap as SIM

strict-containers-tests/strict-containers-tests.cabal

@@ -11,9 +11,7 @@ Homepage:       https://github.com/haskellari/strict-containers
 Cabal-Version: >= 1.10
 Build-type:     Simple
 tested-with:
-  GHC ==8.2.2
-   || ==8.4.4
-   || ==8.6.5
+  GHC ==8.6.5
    || ==8.8.4
    || ==8.10.7
    || ==9.0.2
@@ -38,13 +36,9 @@ test-suite strictness-tests
     , strict                >= 0.4      && < 0.5
     , vector                >= 0.13.0.0 && < 0.14
 
-  if impl(ghc >= 8.6)
-    build-depends: ghc-heap
-  else
-    build-depends: ghc-heap-view
-
   build-depends:
-      HUnit
+      ghc-heap
+    , HUnit
     , QuickCheck                  >=2.7.1
     , tasty
     , tasty-hunit