Fix #6498 Allow Stack to support GHC8.0.x

Author: mpilgrem

ChangeLog.md

@@ -17,6 +17,8 @@ Other enhancements:
 
 Bug fixes:
 
+* Due to a bug, Stack 2.15.1 did not support versions of GHC before 8.2. Stack
+  now supports GHC versions from 8.0.
 * `--haddock-for-hackage` does not ignore `--haddock-arguments`.
 * On Windows, package locations that are Git repositories with submodules now
   work as intended.

src/Stack/Build/ExecuteEnv.hs

@@ -230,12 +230,6 @@ getSetupExe setupHs setupShimHs tmpdir = do
             , toFilePath setupShimHs
             , "-o"
             , toFilePath tmpOutputPath
-              -- See https://github.com/commercialhaskell/stack/issues/6267. As
-              -- corrupt *.hi and/or *.o files can be problematic, we aim to
-              -- to leave none behind. This can be dropped when Stack drops
-              -- support for the problematic versions of GHC.
-            , "-no-keep-hi-files"
-            , "-no-keep-o-files"
             ]
       compilerPath <- getCompilerPath
       withWorkingDir (toFilePath tmpdir) $