Allow to compile from git repo

CHANGELOG.md

@@ -1,5 +1,11 @@
 # Revision history for ghcup
 
+## 0.1.15 -- ????-??-??
+
+* Add date to GHC bindist names created by ghcup
+* Warn when /tmp doesn't have 5GB or more of disk space
+* Allow to compile GHC from git repo wrt [#126](https://gitlab.haskell.org/haskell/ghcup-hs/-/issues/126)
+
 ## 0.1.14.1 -- 2021-04-11
 
 * Make internal symlink target parser more lax, fixes [#119](https://gitlab.haskell.org/haskell/ghcup-hs/-/issues/119)

app/ghcup/Main.hs

@@ -165,9 +165,8 @@ data RmOptions = RmOptions
 
 data CompileCommand = CompileGHC GHCCompileOptions
 
-
 data GHCCompileOptions = GHCCompileOptions
-  { targetVer    :: Version
+  { targetGhc    :: Either Version GitBranch
   , bootstrapGhc :: Either Version (Path Abs)
   , jobs         :: Maybe Int
   , buildConfig  :: Maybe (Path Abs)
@@ -177,14 +176,6 @@ data GHCCompileOptions = GHCCompileOptions
   , setCompile   :: Bool
   }
 
-data CabalCompileOptions = CabalCompileOptions
-  { targetVer    :: Version
-  , bootstrapGhc :: Either Version (Path Abs)
-  , jobs         :: Maybe Int
-  , buildConfig  :: Maybe (Path Abs)
-  , patchDir     :: Maybe (Path Abs)
-  }
-
 data UpgradeOpts = UpgradeInplace
                  | UpgradeAt (Path Abs)
                  | UpgradeGHCupDir
@@ -659,7 +650,10 @@ ENV variables:
   such as: CC, LD, OBJDUMP, NM, AR, RANLIB.
 
 Examples:
+  # compile from known version
   ghcup compile ghc -j 4 -v 8.4.2 -b 8.2.2
+  # compile from git commit/reference
+  ghcup compile ghc -j 4 -g master -b 8.2.2
   # specify path to bootstrap ghc
   ghcup compile ghc -j 4 -v 8.4.2 -b /usr/bin/ghc-8.2.2
   # build cross compiler
@@ -668,34 +662,22 @@ Examples:
 
 ghcCompileOpts :: Parser GHCCompileOptions
 ghcCompileOpts =
-  (\CabalCompileOptions {..} crossTarget addConfArgs setCompile -> GHCCompileOptions { .. }
+  GHCCompileOptions
-    )
+    <$> ((Left <$> option
-    <$> cabalCompileOpts
-    <*> optional
-          (option
-            str
-            (short 'x' <> long "cross-target" <> metavar "CROSS_TARGET" <> help
-              "Build cross-compiler for this platform"
-            )
-          )
-    <*> many (argument str (metavar "CONFIGURE_ARGS" <> help "Additional arguments to configure, prefix with '-- ' (longopts)"))
-    <*> flag
-          False
-          True
-          (long "set" <> help
-            "Set as active version after install"
-          )
-
-cabalCompileOpts :: Parser CabalCompileOptions
-cabalCompileOpts =
-  CabalCompileOptions
-    <$> option
           (eitherReader
             (first (const "Not a valid version") . version . T.pack)
           )
           (short 'v' <> long "version" <> metavar "VERSION" <> help
             "The tool version to compile"
           )
+          ) <|>
+          (Right <$> (GitBranch <$> option
+          str
+          (short 'g' <> long "git-ref" <> metavar "GIT_REFERENCE" <> help
+            "The git commit/branch/ref to build from"
+          ) <*>
+          optional (option str (short 'r' <> long "repository" <> metavar "GIT_REPOSITORY" <> help "The git repository to build from (defaults to GHC upstream)"))
+          )))
     <*> option
           (eitherReader
             (\x ->
@@ -742,6 +724,20 @@ cabalCompileOpts =
               "Absolute path to patch directory (applied in order, uses -p1)"
             )
           )
+    <*> optional
+          (option
+            str
+            (short 'x' <> long "cross-target" <> metavar "CROSS_TARGET" <> help
+              "Build cross-compiler for this platform"
+            )
+          )
+    <*> many (argument str (metavar "CONFIGURE_ARGS" <> help "Additional arguments to configure, prefix with '-- ' (longopts)"))
+    <*> flag
+          False
+          True
+          (long "set" <> help
+            "Set as active version after install"
+          )
 
 
 toolVersionParser :: Parser ToolVersion
@@ -1470,22 +1466,26 @@ Report bugs at <https://gitlab.haskell.org/haskell/ghcup-hs/issues>|]
 
             Compile (CompileGHC GHCCompileOptions {..}) ->
               runCompileGHC (do
+                case targetGhc of
+                  Left targetVer -> do
                     let vi = getVersionInfo targetVer GHC dls
                     forM_ (_viPreCompile =<< vi) $ \msg -> do
                       lift $ $(logInfo) msg
                       lift $ $(logInfo)
                         "...waiting for 5 seconds, you can still abort..."
                       liftIO $ threadDelay 5000000 -- for compilation, give the user a sec to intervene
-                liftE $ compileGHC dls
+                  Right _ -> pure ()
-                            (GHCTargetVersion crossTarget targetVer)
+                targetVer <- liftE $ compileGHC dls
+                            (first (GHCTargetVersion crossTarget) targetGhc)
                             bootstrapGhc
                             jobs
                             buildConfig
                             patchDir
                             addConfArgs
                             pfreq
+                let vi = getVersionInfo (_tvVersion targetVer) GHC dls
                 when setCompile $ void $ liftE $
-                  setGHC (GHCTargetVersion crossTarget targetVer) SetGHCOnly
+                  setGHC targetVer SetGHCOnly
                 pure vi
                 )
                 >>= \case

lib/GHCup.hs

@@ -59,6 +59,7 @@ import           Data.ByteString                ( ByteString )
 import           Data.Either
 import           Data.List
 import           Data.Maybe
+import           Data.String                    ( fromString )
 import           Data.String.Interpolate
 import           Data.Text                      ( Text )
 import           Data.Time.Clock
@@ -88,6 +89,8 @@ import qualified Data.ByteString.Lazy          as BL
 import qualified Data.Map.Strict               as Map
 import qualified Data.Text                     as T
 import qualified Data.Text.Encoding            as E
+import qualified Text.Megaparsec               as MP
+import GHCup.Utils.MegaParsec
 
 
 
@@ -1075,7 +1078,7 @@ compileGHC :: ( MonadMask m
               , MonadFail m
               )
            => GHCupDownloads
-           -> GHCTargetVersion           -- ^ version to install
+           -> Either GHCTargetVersion GitBranch          -- ^ version to install
            -> Either Version (Path Abs)  -- ^ version to bootstrap with
            -> Maybe Int                  -- ^ jobs
            -> Maybe (Path Abs)           -- ^ build config
@@ -1099,14 +1102,14 @@ compileGHC :: ( MonadMask m
 #endif
                  ]
                 m
-                ()
+                GHCTargetVersion
-compileGHC dls tver bstrap jobs mbuildConfig patchdir aargs pfreq@PlatformRequest{..}
+compileGHC dls targetGhc bstrap jobs mbuildConfig patchdir aargs pfreq@PlatformRequest{..}
   = do
+    (workdir, tmpUnpack, tver) <- case targetGhc of
+      -- unpack from version tarball
+      Left tver -> do
         lift $ $(logDebug) [i|Requested to compile: #{tver} with #{bstrap}|]
 
-    alreadyInstalled <- lift $ ghcInstalled tver
-    alreadySet <- fmap (== Just tver) $ lift $ ghcSet (_tvTarget tver)
-
         -- download source tarball
         dlInfo <-
           preview (ix GHC % ix (tver ^. tvVersion) % viSourceDL % _Just) dls
@@ -1118,19 +1121,62 @@ compileGHC dls tver bstrap jobs mbuildConfig patchdir aargs pfreq@PlatformReques
         liftE $ unpackToDir tmpUnpack dl
         void $ liftIO $ darwinNotarization _rPlatform tmpUnpack
 
-    bghc <- case bstrap of
-      Right g    -> pure $ Right g
-      Left  bver -> Left <$> parseRel ("ghc-" <> verToBS bver)
         workdir <- maybe (pure tmpUnpack)
                          (liftE . intoSubdir tmpUnpack)
                          (view dlSubdir dlInfo)
+
+        pure (workdir, tmpUnpack, tver)
+
+      -- clone from git
+      Right GitBranch{..} -> do
+        tmpUnpack <- lift mkGhcupTmpDir
+        let git args = execLogged [s|git|] True ("--no-pager":args) [rel|git|] (Just tmpUnpack) Nothing
+        tver <- reThrowAll @_ @'[ProcessError] DownloadFailed $ do
+          let rep = fromMaybe "https://gitlab.haskell.org/ghc/ghc.git" repo
+          lift $ $(logInfo) [i|Fetching git repo #{rep} at ref #{ref} (this may take a while)|]
+          lEM $ git [ "init" ]
+          lEM $ git [ "remote"
+                    , "add"
+                    , "origin"
+                    , fromString rep ]
+
+          let fetch_args = 
+                    [ "fetch"
+                    , "--depth"
+                    , "1"
+                    , "--quiet"
+                    , "origin"
+                    , fromString ref ]
+          lEM $ git fetch_args
+
+          lEM $ git [ "checkout", "FETCH_HEAD" ]
+          lEM $ git [ "submodule", "update", "--init", "--depth", "1" ]
+          lEM $ execLogged "./boot" False [] [rel|ghc-bootstrap|] (Just tmpUnpack) Nothing
+          lEM $ execLogged "./configure" False [] [rel|ghc-bootstrap|] (Just tmpUnpack) Nothing
+          CapturedProcess {..} <- liftIO $ makeOut
+            ["show!", "--quiet", "VALUE=ProjectVersion" ] (Just tmpUnpack)
+          case _exitCode of
+            ExitSuccess -> throwEither . MP.parse ghcProjectVersion "" . decUTF8Safe $ _stdOut
+            ExitFailure c -> fail ("Could not figure out GHC project version. Exit code was: " <> show c <> ". Error was: " <> T.unpack (decUTF8Safe _stdErr))
+
+        void $ liftIO $ darwinNotarization _rPlatform tmpUnpack
+
+        pure (tmpUnpack, tmpUnpack, GHCTargetVersion Nothing tver)
+
+    alreadyInstalled <- lift $ ghcInstalled tver
+    alreadySet <- fmap (== Just tver) $ lift $ ghcSet (_tvTarget tver)
+
     ghcdir         <- lift $ ghcupGHCDir tver
 
+    bghc <- case bstrap of
+      Right g    -> pure $ Right g
+      Left  bver -> Left <$> parseRel ("ghc-" <> verToBS bver)
+
     (bindist, bmk) <- liftE $ runBuildAction
       tmpUnpack
       Nothing
       (do
-        b   <- compileBindist bghc ghcdir workdir
+        b <- compileBindist bghc tver workdir
         bmk <- liftIO $ readFileStrict (build_mk workdir)
         pure (b, bmk)
       )
@@ -1139,7 +1185,7 @@ compileGHC dls tver bstrap jobs mbuildConfig patchdir aargs pfreq@PlatformReques
       lift $ $(logInfo) [i|Deleting existing installation|]
       liftE $ rmGHCVer tver
     liftE $ installPackedGHC bindist
-                             (view dlSubdir dlInfo)
+                             (Just $ RegexDir "ghc-.*")
                              ghcdir
                              (tver ^. tvVersion)
                              pfreq
@@ -1151,21 +1197,23 @@ compileGHC dls tver bstrap jobs mbuildConfig patchdir aargs pfreq@PlatformReques
     -- restore
     when alreadySet $ liftE $ void $ setGHC tver SetGHCOnly
 
+    pure tver
+
  where
-  defaultConf = case _tvTarget tver of
+  defaultConf = case targetGhc of
-    Nothing -> [s|
+    Left (GHCTargetVersion (Just _) _) -> [s|
-V=0
-BUILD_MAN = NO
-BUILD_SPHINX_HTML = NO
-BUILD_SPHINX_PDF = NO
-HADDOCK_DOCS = YES|]
-    Just _ -> [s|
 V=0
 BUILD_MAN = NO
 BUILD_SPHINX_HTML = NO
 BUILD_SPHINX_PDF = NO
 HADDOCK_DOCS = NO
 Stage1Only = YES|]
+    _ -> [s|
+V=0
+BUILD_MAN = NO
+BUILD_SPHINX_HTML = NO
+BUILD_SPHINX_PDF = NO
+HADDOCK_DOCS = YES|]
 
   compileBindist :: ( MonadReader AppState m
                     , MonadThrow m
@@ -1175,13 +1223,13 @@ Stage1Only = YES|]
                     , MonadFail m
                     )
                  => Either (Path Rel) (Path Abs)
-                 -> Path Abs
+                 -> GHCTargetVersion
                  -> Path Abs
                  -> Excepts
                       '[FileDoesNotExistError, InvalidBuildConfig, PatchFailed, ProcessError, NotFoundInPATH, CopyError]
                       m
                       (Path Abs)  -- ^ output path of bindist
-  compileBindist bghc ghcdir workdir = do
+  compileBindist bghc tver workdir = do
     lift $ $(logInfo) [i|configuring build|]
     liftE checkBuildConfig
 
@@ -1191,8 +1239,7 @@ Stage1Only = YES|]
 
     cEnv <- liftIO getEnvironment
 
-    if
+    if | _tvVersion tver >= [vver|8.8.0|] -> do
-      | _tvVersion tver >= [vver|8.8.0|] -> do
           bghcPath <- case bghc of
             Right ghc' -> pure ghc'
             Left  bver -> do
@@ -1201,8 +1248,7 @@ Stage1Only = YES|]
           lEM $ execLogged
             "./configure"
             False
-          (  ["--prefix=" <> toFilePath ghcdir]
+            (  maybe mempty
-          ++ maybe mempty
                       (\x -> ["--target=" <> E.encodeUtf8 x])
                       (_tvTarget tver)
             ++ fmap E.encodeUtf8 aargs
@@ -1214,8 +1260,7 @@ Stage1Only = YES|]
         lEM $ execLogged
           "./configure"
           False
-          (  [ "--prefix=" <> toFilePath ghcdir
+          (  [ "--with-ghc=" <> either toFilePath toFilePath bghc
-             , "--with-ghc=" <> either toFilePath toFilePath bghc
              ]
           ++ maybe mempty
                    (\x -> ["--target=" <> E.encodeUtf8 x])
@@ -1283,12 +1328,12 @@ Stage1Only = YES|]
     let lines' = fmap T.strip . T.lines $ decUTF8Safe c
 
    -- for cross, we need Stage1Only
-    case _tvTarget tver of
+    case targetGhc of
-      Just _ -> when ("Stage1Only = YES" `notElem` lines') $ throwE
+      Left (GHCTargetVersion (Just _) _) -> when ("Stage1Only = YES" `notElem` lines') $ throwE
         (InvalidBuildConfig
           [s|Cross compiling needs to be a Stage1 build, add "Stage1Only = YES" to your config!|]
         )
-      Nothing -> pure ()
+      _ -> pure ()
 
 
 
@@ -1381,4 +1426,3 @@ postGHCInstall ver@GHCTargetVersion {..} = do
     $ getMajorMinorV _tvVersion
   forM_ v' $ \(mj, mi) -> lift (getGHCForMajor mj mi _tvTarget)
     >>= mapM_ (\v -> liftE $ setGHC v SetGHC_XY)
-

lib/GHCup/Types.hs

@@ -379,6 +379,11 @@ data GHCTargetVersion = GHCTargetVersion
   }
   deriving (Ord, Eq, Show)
 
+data GitBranch = GitBranch
+  { ref  :: String
+  , repo :: Maybe String
+  }
+  deriving (Ord, Eq, Show)
 
 mkTVer :: Version -> GHCTargetVersion
 mkTVer = GHCTargetVersion Nothing

lib/GHCup/Utils.hs

@@ -770,6 +770,15 @@ make args workdir = do
   let mymake = if has_gmake then "gmake" else "make"
   execLogged mymake True args [rel|ghc-make|] workdir Nothing
 
+makeOut :: [ByteString]
+        -> Maybe (Path Abs)
+        -> IO CapturedProcess
+makeOut args workdir = do
+  spaths    <- catMaybes . fmap parseAbs <$> liftIO getSearchPath
+  has_gmake <- isJust <$> liftIO (searchPath spaths [rel|gmake|])
+  let mymake = if has_gmake then [rel|gmake|] else [rel|make|]
+  liftIO $ executeOut mymake args workdir
+
 
 -- | Try to apply patches in order. Fails with 'PatchFailed'
 -- on first failure.

lib/GHCup/Utils/MegaParsec.hs

@@ -67,6 +67,15 @@ ghcTargetBinP t =
     <*> (MP.chunk t <* MP.eof)
 
 
+-- | Extracts the version from @ProjectVersion="8.10.5"@.
+ghcProjectVersion :: MP.Parsec Void Text Version
+ghcProjectVersion = do
+  _ <- MP.chunk "ProjectVersion=\""
+  ver <- parseUntil1 $ MP.chunk "\""
+  MP.setInput ver
+  version'
+
+
 -- | Extracts target triple and version from e.g.
 --   * armv7-unknown-linux-gnueabihf-8.8.3
 --   * armv7-unknown-linux-gnueabihf-8.8.3