From 861d247efaca37279c55a14f7f2d4d3fb15767a1 Mon Sep 17 00:00:00 2001
From: Daniel Gröber <dxld@darkboxed.org>
Date: Tue, 12 Feb 2019 03:22:31 +0100
Subject: Make Cabal-HEAD lib v2-build cachable

---
 .../Compiletime/Program/CabalInstall.hs            | 22 ++++++++++++++--------
 1 file changed, 14 insertions(+), 8 deletions(-)

(limited to 'src/CabalHelper/Compiletime/Program/CabalInstall.hs')

diff --git a/src/CabalHelper/Compiletime/Program/CabalInstall.hs b/src/CabalHelper/Compiletime/Program/CabalInstall.hs
index f989a02..f6c0018 100644
--- a/src/CabalHelper/Compiletime/Program/CabalInstall.hs
+++ b/src/CabalHelper/Compiletime/Program/CabalInstall.hs
@@ -138,7 +138,7 @@ runSetupHs
     -> UnpackedCabalVersion
     -> CabalInstallVersion
     -> IO ()
-runSetupHs ghcVer db srcdir iCabalVer CabalInstallVersion {..}
+runSetupHs ghcVer db srcdir cabalVer CabalInstallVersion {..}
     | cabalInstallVer >= parseVer "1.24" = do
       go $ \args -> callProcessStderr (Just srcdir) (cabalProgram ?progs) $
         [ "act-as-setup", "--" ] ++ args
@@ -148,9 +148,9 @@ runSetupHs ghcVer db srcdir iCabalVer CabalInstallVersion {..}
   where
     parmake_opt :: Maybe Int -> [String]
     parmake_opt nproc'
-        | CabalHEAD _ <- iCabalVer =
+        | CabalHEAD _ <- cabalVer =
             ["-j"++nproc]
-        | CabalVersion ver <- iCabalVer,  ver >= Version [1,20] [] =
+        | CabalVersion ver <- cabalVer, ver >= Version [1,20] [] =
             ["-j"++nproc]
         | otherwise =
             []
@@ -195,13 +195,19 @@ cabalWithGHCProgOpts = concat
       else []
   ]
 
+-- TODO: This needs the big message blub from above
 installCabalLibV2 :: Env => GhcVersion -> UnpackedCabalVersion -> PackageEnvFile -> IO ()
-installCabalLibV2 _ (CabalHEAD _) _ = error "TODO: `installCabalLibV2 _ CabalHEAD _` is unimplemented"
-installCabalLibV2 _ghcVer (CabalVersion cabalVer) (PackageEnvFile env_file) = do
+installCabalLibV2 _ghcVer cv (PackageEnvFile env_file) = do
   exists <- doesFileExist env_file
   if exists
     then return ()
     else do
+    (target, cwd) <- case cv of
+      CabalVersion cabalVer -> do
+        tmp <- getTemporaryDirectory
+        return $ ("Cabal-"++showVersion cabalVer, tmp)
+      CabalHEAD (_commitid, CabalSourceDir srcdir) -> do
+        return (".", srcdir)
     CabalInstallVersion {..} <- cabalInstallVersion
     cabal_opts <- return $ concat
         [ if cabalInstallVer >= Version [1,20] []
@@ -214,16 +220,16 @@ installCabalLibV2 _ghcVer (CabalVersion cabalVer) (PackageEnvFile env_file) = do
         , cabalV2WithGHCProgOpts
         , [ "--package-env=" ++ env_file
           , "--lib"
-          , "Cabal-"++showVersion cabalVer
+          , target
           ]
         , if | ?verbose 3 -> ["-v2"]
              | ?verbose 4 -> ["-v3"]
              | otherwise -> []
         ]
-    tmp <- getTemporaryDirectory
-    callProcessStderr (Just tmp) (cabalProgram ?progs) cabal_opts
+    callProcessStderr (Just cwd) (cabalProgram ?progs) cabal_opts
     hPutStrLn stderr "done"
 
+
 cabalV2WithGHCProgOpts :: Progs => [String]
 cabalV2WithGHCProgOpts = concat
   [ [ "--with-compiler=" ++ ghcProgram ?cprogs ]
-- 
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