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-rw-r--r--src/CabalHelper/Compiletime/Compile.hs1
-rw-r--r--src/CabalHelper/Compiletime/Program/GHC.hs1
2 files changed, 2 insertions, 0 deletions
diff --git a/src/CabalHelper/Compiletime/Compile.hs b/src/CabalHelper/Compiletime/Compile.hs
index acdf7cc..3bc959c 100644
--- a/src/CabalHelper/Compiletime/Compile.hs
+++ b/src/CabalHelper/Compiletime/Compile.hs
@@ -216,6 +216,7 @@ compileHelper' CompHelperEnv {..} = do
CabalInstallVersion instVer <- liftIO cabalInstallVersion
guard $ instVer >= (Version [2,4,1,0] [])
-- ^ didn't test with older versions
+ guard $ ghcVer >= (GhcVersion (Version [8,0] []))
env@(PackageEnvFile env_file)
<- liftIO $ getPrivateCabalPkgEnv ghcVer cabalVer
vLog $ logMsg ++ "v2-build package-env " ++ env_file
diff --git a/src/CabalHelper/Compiletime/Program/GHC.hs b/src/CabalHelper/Compiletime/Program/GHC.hs
index 79dd1b3..b58eab0 100644
--- a/src/CabalHelper/Compiletime/Program/GHC.hs
+++ b/src/CabalHelper/Compiletime/Program/GHC.hs
@@ -61,6 +61,7 @@ data GhcInvocation = GhcInvocation
}
newtype GhcVersion = GhcVersion { unGhcVersion :: Version }
+ deriving (Eq, Ord, Read, Show)
showGhcVersion :: GhcVersion -> String
showGhcVersion (GhcVersion v) = showVersion v