module Main (main) where
import Version ( version, targetOS, targetARCH )
+import Distribution.ModuleName hiding (main)
import Distribution.InstalledPackageInfo hiding (depends)
import Distribution.Compat.ReadP
import Distribution.ParseUtils
import System.Console.GetOpt
import Text.PrettyPrint
+#if __GLASGOW_HASKELL__ >= 609
import qualified Control.Exception as Exception
+#else
+import qualified Control.Exception.Extensible as Exception
+#endif
import Data.Maybe
import Data.Char ( isSpace, toLower )
import System.Environment ( getArgs, getProgName, getEnv )
import System.IO
import System.IO.Error (try)
-import Data.List ( isPrefixOf, isSuffixOf, intersperse, sortBy, nub,
- unfoldr, break )
-#if __GLASGOW_HASKELL__ > 604
-import Data.List ( isInfixOf )
-#else
-import Data.List ( tails )
-#endif
+import Data.List
import Control.Concurrent
-#ifdef mingw32_HOST_OS
import Foreign
-import Foreign.C.String
+import Foreign.C
+#ifdef mingw32_HOST_OS
import GHC.ConsoleHandler
#else
-import System.Posix
+import System.Posix hiding (fdToHandle)
#endif
-import IO ( isPermissionError, isDoesNotExistError )
+import IO ( isPermissionError )
+import System.Posix.Internals
+import GHC.Handle (fdToHandle)
#if defined(GLOB)
import System.Process(runInteractiveCommand)
| FlagSimpleOutput
| FlagNamesOnly
| FlagIgnoreCase
+ | FlagNoUserDb
deriving Eq
flags :: [OptDescr Flag]
"use the specified package config file",
Option [] ["global-conf"] (ReqArg FlagGlobalConfig "FILE")
"location of the global package config",
+ Option [] ["no-user-package-conf"] (NoArg FlagNoUserDb)
+ "never read the user package database",
Option [] ["force"] (NoArg FlagForce)
"ignore missing dependencies, directories, and libraries",
Option [] ["force-files"] (NoArg FlagForceFiles)
-- -----------------------------------------------------------------------------
-- Do the business
-data Force = ForceAll | ForceFiles | NoForce
+data Force = NoForce | ForceFiles | ForceAll | CannotForce
+ deriving (Eq,Ord)
data PackageArg = Id PackageIdentifier | Substring String (String->Bool)
registerPackage filename cli auto_ghci_libs True force
["unregister", pkgid_str] -> do
pkgid <- readGlobPkgId pkgid_str
- unregisterPackage pkgid cli
+ unregisterPackage pkgid cli force
["expose", pkgid_str] -> do
pkgid <- readGlobPkgId pkgid_str
- exposePackage pkgid cli
+ exposePackage pkgid cli force
["hide", pkgid_str] -> do
pkgid <- readGlobPkgId pkgid_str
- hidePackage pkgid cli
+ hidePackage pkgid cli force
["list"] -> do
listPackages cli Nothing Nothing
["list", pkgid_str] ->
type PackageDBName = FilePath
type PackageDB = [InstalledPackageInfo]
-type PackageDBStack = [(PackageDBName,PackageDB)]
+type NamedPackageDB = (PackageDBName, PackageDB)
+type PackageDBStack = [NamedPackageDB]
-- A stack of package databases. Convention: head is the topmost
-- in the stack. Earlier entries override later one.
allPackagesInStack :: PackageDBStack -> [InstalledPackageInfo]
allPackagesInStack = concatMap snd
-getPkgDatabases :: Bool -> [Flag] -> IO PackageDBStack
+getPkgDatabases :: Bool -> [Flag] -> IO (PackageDBStack, Maybe PackageDBName)
getPkgDatabases modify my_flags = do
-- first we determine the location of the global package config. On Windows,
-- this is found relative to the ghc-pkg.exe binary, whereas on Unix the
let err_msg = "missing --global-conf option, location of global package.conf unknown\n"
global_conf <-
case [ f | FlagGlobalConfig f <- my_flags ] of
- [] -> do mb_dir <- getExecDir "/bin/ghc-pkg.exe"
+ [] -> do mb_dir <- getLibDir
case mb_dir of
Nothing -> die err_msg
Just dir ->
- do let path1 = dir </> "package.conf"
- path2 = dir </> ".." </> ".." </> ".."
- </> "inplace-datadir"
- </> "package.conf"
- exists1 <- doesFileExist path1
- exists2 <- doesFileExist path2
- if exists1 then return path1
- else if exists2 then return path2
- else die "Can't find package.conf"
+ do let path = dir </> "package.conf"
+ exists <- doesFileExist path
+ unless exists $ die "Can't find package.conf"
+ return path
fs -> return (last fs)
let global_conf_dir = global_conf ++ ".d"
, isSuffixOf ".conf" file]
else return []
- -- get the location of the user package database, and create it if necessary
- appdir <- getAppUserDataDirectory "ghc"
+ let no_user_db = FlagNoUserDb `elem` my_flags
- let
- subdir = targetARCH ++ '-':targetOS ++ '-':Version.version
- archdir = appdir </> subdir
- user_conf = archdir </> "package.conf"
- user_exists <- doesFileExist user_conf
+ -- get the location of the user package database, and create it if necessary
+ -- getAppUserDataDirectory can fail (e.g. if $HOME isn't set)
+ appdir <- try $ getAppUserDataDirectory "ghc"
+
+ mb_user_conf <-
+ if no_user_db then return Nothing else
+ case appdir of
+ Right dir -> do
+ let subdir = targetARCH ++ '-':targetOS ++ '-':Version.version
+ user_conf = dir </> subdir </> "package.conf"
+ user_exists <- doesFileExist user_conf
+ return (Just (user_conf,user_exists))
+ Left _ ->
+ return Nothing
-- If the user database doesn't exist, and this command isn't a
-- "modify" command, then we won't attempt to create or use it.
let sys_databases
- | modify || user_exists = user_conf : global_confs ++ [global_conf]
+ | Just (user_conf,user_exists) <- mb_user_conf,
+ modify || user_exists = user_conf : global_confs ++ [global_conf]
| otherwise = global_confs ++ [global_conf]
e_pkg_path <- try (System.Environment.getEnv "GHC_PACKAGE_PATH")
Right path
| last cs == "" -> init cs ++ sys_databases
| otherwise -> cs
- where cs = splitSearchPath path
+ where cs = parseSearchPath path
-- The "global" database is always the one at the bottom of the stack.
-- This is the database we modify by default.
virt_global_conf = last env_stack
let db_flags = [ f | Just f <- map is_db_flag my_flags ]
- where is_db_flag FlagUser = Just user_conf
+ where is_db_flag FlagUser
+ | Just (user_conf, _user_exists) <- mb_user_conf
+ = Just user_conf
is_db_flag FlagGlobal = Just virt_global_conf
is_db_flag (FlagConfig f) = Just f
is_db_flag _ = Nothing
- final_stack <-
+ (final_stack, to_modify) <-
if not modify
then -- For a "read" command, we use all the databases
-- specified on the command line. If there are no
-- command-line flags specifying databases, the default
-- is to use all the ones we know about.
- if null db_flags then return env_stack
- else return (reverse (nub db_flags))
+ if null db_flags then return (env_stack, Nothing)
+ else return (reverse (nub db_flags), Nothing)
else let
-- For a "modify" command, treat all the databases as
-- a stack, where we are modifying the top one, but it
[ f | FlagConfig f <- reverse my_flags ]
++ env_stack
- modifying f
- | f `elem` flag_stack = return (dropWhile (/= f) flag_stack)
- | otherwise = die ("requesting modification of database:\n\t" ++ f ++ "\n\twhich is not in the database stack.")
+ -- the database we actually modify is the one mentioned
+ -- rightmost on the command-line.
+ to_modify = if null db_flags
+ then Just virt_global_conf
+ else Just (last db_flags)
in
- if null db_flags
- then modifying virt_global_conf
- else modifying (head db_flags)
-
- db_stack <- mapM readParseDatabase final_stack
- return db_stack
-
-readParseDatabase :: PackageDBName -> IO (PackageDBName,PackageDB)
-readParseDatabase filename = do
- str <- readFile filename `Exception.catch` \_ -> return emptyPackageConfig
- let packages = map convertPackageInfoIn $ read str
- Exception.evaluate packages
- `Exception.catch` \e->
- die ("error while parsing " ++ filename ++ ": " ++ show e)
- return (filename,packages)
-
-emptyPackageConfig :: String
-emptyPackageConfig = "[]"
+ return (flag_stack, to_modify)
+
+ db_stack <- mapM (readParseDatabase mb_user_conf) final_stack
+ return (db_stack, to_modify)
+
+readParseDatabase :: Maybe (PackageDBName,Bool)
+ -> PackageDBName
+ -> IO (PackageDBName,PackageDB)
+readParseDatabase mb_user_conf filename
+ -- the user database (only) is allowed to be non-existent
+ | Just (user_conf,False) <- mb_user_conf, filename == user_conf
+ = return (filename, [])
+ | otherwise
+ = do str <- readFile filename
+ let packages = map convertPackageInfoIn $ read str
+ Exception.evaluate packages
+ `catchError` \e->
+ die ("error while parsing " ++ filename ++ ": " ++ show e)
+ return (filename,packages)
-- -----------------------------------------------------------------------------
-- Registering
-> Force
-> IO ()
registerPackage input my_flags auto_ghci_libs update force = do
- db_stack <- getPkgDatabases True my_flags
+ (db_stack, Just to_modify) <- getPkgDatabases True my_flags
let
- db_to_operate_on = my_head "db" db_stack
- db_filename = fst db_to_operate_on
+ db_to_operate_on = my_head "register" $
+ filter ((== to_modify).fst) db_stack
--
-
s <-
case input of
"-" -> do
pkg <- parsePackageInfo expanded
putStrLn "done."
- validatePackageConfig pkg db_stack auto_ghci_libs update force
+ let unversioned_deps = filter (not . realVersion) (depends pkg)
+ unless (null unversioned_deps) $
+ die ("Unversioned dependencies found: " ++
+ unwords (map display unversioned_deps))
+
+ let truncated_stack = dropWhile ((/= to_modify).fst) db_stack
+ -- truncate the stack for validation, because we don't allow
+ -- packages lower in the stack to refer to those higher up.
+ validatePackageConfig pkg truncated_stack auto_ghci_libs update force
let new_details = filter not_this (snd db_to_operate_on) ++ [pkg]
not_this p = package p /= package pkg
- savingOldConfig db_filename $
- writeNewConfig db_filename new_details
+ writeNewConfig to_modify new_details
parsePackageInfo
:: String
-- -----------------------------------------------------------------------------
-- Exposing, Hiding, Unregistering are all similar
-exposePackage :: PackageIdentifier -> [Flag] -> IO ()
+exposePackage :: PackageIdentifier -> [Flag] -> Force -> IO ()
exposePackage = modifyPackage (\p -> [p{exposed=True}])
-hidePackage :: PackageIdentifier -> [Flag] -> IO ()
+hidePackage :: PackageIdentifier -> [Flag] -> Force -> IO ()
hidePackage = modifyPackage (\p -> [p{exposed=False}])
-unregisterPackage :: PackageIdentifier -> [Flag] -> IO ()
+unregisterPackage :: PackageIdentifier -> [Flag] -> Force -> IO ()
unregisterPackage = modifyPackage (\_ -> [])
modifyPackage
:: (InstalledPackageInfo -> [InstalledPackageInfo])
-> PackageIdentifier
-> [Flag]
+ -> Force
-> IO ()
-modifyPackage fn pkgid my_flags = do
- db_stack <- getPkgDatabases True{-modify-} my_flags
- let ((db_name, pkgs) : _) = db_stack
- ps <- findPackages [(db_name,pkgs)] (Id pkgid)
- let pids = map package ps
- let new_config = concat (map modify pkgs)
+modifyPackage fn pkgid my_flags force = do
+ (db_stack, Just _to_modify) <- getPkgDatabases True{-modify-} my_flags
+ ((db_name, pkgs), ps) <- fmap head $ findPackagesByDB db_stack (Id pkgid)
+-- let ((db_name, pkgs) : rest_of_stack) = db_stack
+-- ps <- findPackages [(db_name,pkgs)] (Id pkgid)
+ let
+ pids = map package ps
modify pkg
| package pkg `elem` pids = fn pkg
| otherwise = [pkg]
- savingOldConfig db_name $
- writeNewConfig db_name new_config
+ new_config = concat (map modify pkgs)
+
+ let
+ old_broken = brokenPackages (allPackagesInStack db_stack)
+ rest_of_stack = [ (nm, mypkgs)
+ | (nm, mypkgs) <- db_stack, nm /= db_name ]
+ new_stack = (db_name,new_config) : rest_of_stack
+ new_broken = map package (brokenPackages (allPackagesInStack new_stack))
+ newly_broken = filter (`notElem` map package old_broken) new_broken
+ --
+ when (not (null newly_broken)) $
+ dieOrForceAll force ("unregistering " ++ display pkgid ++
+ " would break the following packages: "
+ ++ unwords (map display newly_broken))
+
+ writeNewConfig db_name new_config
-- -----------------------------------------------------------------------------
-- Listing packages
listPackages :: [Flag] -> Maybe PackageArg -> Maybe (String->Bool) -> IO ()
listPackages my_flags mPackageName mModuleName = do
let simple_output = FlagSimpleOutput `elem` my_flags
- db_stack <- getPkgDatabases False my_flags
+ (db_stack, _) <- getPkgDatabases False my_flags
let db_stack_filtered -- if a package is given, filter out all other packages
| Just this <- mPackageName =
map (\(conf,pkgs) -> (conf, filter (this `matchesPkg`) pkgs))
match `exposedInPkg` pkg = any match (map display $ exposedModules pkg)
- pkg_map = map (\p -> (package p, p)) $ allPackagesInStack db_stack
+ pkg_map = allPackagesInStack db_stack
show_func = if simple_output then show_simple else mapM_ (show_normal pkg_map)
show_func (reverse db_stack_sorted)
text db_name <> colon $$ nest 4 packages
)
where packages = fsep (punctuate comma (map pp_pkg pkg_confs))
+ broken = map package (brokenPackages pkg_map)
pp_pkg p
- | isBrokenPackage p pkg_map = braces doc
+ | package p `elem` broken = braces doc
| exposed p = doc
| otherwise = parens doc
where doc = text (display (package p))
- show_simple db_stack = do
- let showPkg = if FlagNamesOnly `elem` my_flags then display . pkgName
- else display
- pkgs = map showPkg $ sortBy compPkgIdVer $
- map package (allPackagesInStack db_stack)
- when (not (null pkgs)) $
- hPutStrLn stdout $ concat $ intersperse " " pkgs
+ show_simple = simplePackageList my_flags . allPackagesInStack
+
+simplePackageList :: [Flag] -> [InstalledPackageInfo] -> IO ()
+simplePackageList my_flags pkgs = do
+ let showPkg = if FlagNamesOnly `elem` my_flags then display . pkgName
+ else display
+ strs = map showPkg $ sortBy compPkgIdVer $ map package pkgs
+ when (not (null pkgs)) $
+ hPutStrLn stdout $ concat $ intersperse " " strs
-- -----------------------------------------------------------------------------
-- Prints the highest (hidden or exposed) version of a package
latestPackage :: [Flag] -> PackageIdentifier -> IO ()
latestPackage my_flags pkgid = do
- db_stack <- getPkgDatabases False my_flags
+ (db_stack, _) <- getPkgDatabases False my_flags
ps <- findPackages db_stack (Id pkgid)
show_pkg (sortBy compPkgIdVer (map package ps))
where
describePackage :: [Flag] -> PackageArg -> IO ()
describePackage my_flags pkgarg = do
- db_stack <- getPkgDatabases False my_flags
+ (db_stack, _) <- getPkgDatabases False my_flags
ps <- findPackages db_stack pkgarg
doDump ps
dumpPackages :: [Flag] -> IO ()
dumpPackages my_flags = do
- db_stack <- getPkgDatabases False my_flags
+ (db_stack, _) <- getPkgDatabases False my_flags
doDump (allPackagesInStack db_stack)
doDump :: [InstalledPackageInfo] -> IO ()
-- PackageId is can have globVersion for the version
findPackages :: PackageDBStack -> PackageArg -> IO [InstalledPackageInfo]
findPackages db_stack pkgarg
- = case [ p | p <- all_pkgs, pkgarg `matchesPkg` p ] of
- [] -> dieWith 2 ("cannot find package " ++ pkg_msg pkgarg)
+ = fmap (concatMap snd) $ findPackagesByDB db_stack pkgarg
+
+findPackagesByDB :: PackageDBStack -> PackageArg
+ -> IO [(NamedPackageDB, [InstalledPackageInfo])]
+findPackagesByDB db_stack pkgarg
+ = case [ (db, matched)
+ | db@(_, pkgs) <- db_stack,
+ let matched = filter (pkgarg `matchesPkg`) pkgs,
+ not (null matched) ] of
+ [] -> die ("cannot find package " ++ pkg_msg pkgarg)
ps -> return ps
where
- all_pkgs = allPackagesInStack db_stack
pkg_msg (Id pkgid) = display pkgid
- pkg_msg (Substring pkgpat _) = "matching "++pkgpat
+ pkg_msg (Substring pkgpat _) = "matching " ++ pkgpat
matches :: PackageIdentifier -> PackageIdentifier -> Bool
pid `matches` pid'
describeField :: [Flag] -> PackageArg -> [String] -> IO ()
describeField my_flags pkgarg fields = do
- db_stack <- getPkgDatabases False my_flags
+ (db_stack, _) <- getPkgDatabases False my_flags
fns <- toFields fields
ps <- findPackages db_stack pkgarg
let top_dir = takeDirectory (fst (last db_stack))
checkConsistency :: [Flag] -> IO ()
checkConsistency my_flags = do
- db_stack <- getPkgDatabases True my_flags
+ (db_stack, _) <- getPkgDatabases True my_flags
-- check behaves like modify for the purposes of deciding which
-- databases to use, because ordering is important.
- let pkgs = map (\p -> (package p, p)) $ allPackagesInStack db_stack
- broken_pkgs = do
- (pid, p) <- pkgs
- let broken_deps = missingPackageDeps p pkgs
- guard (not . null $ broken_deps)
- return (pid, broken_deps)
- mapM_ (putStrLn . render . show_func) broken_pkgs
- where
- show_func | FlagSimpleOutput `elem` my_flags = show_simple
- | otherwise = show_normal
- show_simple (pid,deps) =
- text (display pid) <> colon
- <+> fsep (punctuate comma (map (text . display) deps))
- show_normal (pid,deps) =
- text "package" <+> text (display pid) <+> text "has missing dependencies:"
- $$ nest 4 (fsep (punctuate comma (map (text . display) deps)))
-
-missingPackageDeps :: InstalledPackageInfo
- -> [(PackageIdentifier, InstalledPackageInfo)]
- -> [PackageIdentifier]
-missingPackageDeps pkg pkg_map =
- [ d | d <- depends pkg, isNothing (lookup d pkg_map)] ++
- [ d | d <- depends pkg, Just p <- return (lookup d pkg_map),
- isBrokenPackage p pkg_map]
-
-isBrokenPackage :: InstalledPackageInfo -> [(PackageIdentifier, InstalledPackageInfo)] -> Bool
-isBrokenPackage pkg pkg_map
- = not . null $ missingPackageDeps pkg (filter notme pkg_map)
- where notme (p, _ipi) = package pkg /= p
- -- remove p from the database when we invoke missingPackageDeps,
- -- because we want mutually recursive groups of package to show up
+
+ let simple_output = FlagSimpleOutput `elem` my_flags
+
+ let pkgs = allPackagesInStack db_stack
+
+ checkPackage p = do
+ (_,es) <- runValidate $ checkPackageConfig p db_stack False True
+ if null es
+ then return []
+ else do
+ when (not simple_output) $ do
+ reportError ("There are problems in package " ++ display (package p) ++ ":")
+ reportValidateErrors es " " Nothing
+ return ()
+ return [p]
+
+ broken_pkgs <- concat `fmap` mapM checkPackage pkgs
+
+ let filterOut pkgs1 pkgs2 = filter not_in pkgs2
+ where not_in p = package p `notElem` all_ps
+ all_ps = map package pkgs1
+
+ let not_broken_pkgs = filterOut broken_pkgs pkgs
+ (_, trans_broken_pkgs) = closure [] not_broken_pkgs
+ all_broken_pkgs = broken_pkgs ++ trans_broken_pkgs
+
+ when (not (null all_broken_pkgs)) $ do
+ if simple_output
+ then simplePackageList my_flags all_broken_pkgs
+ else do
+ reportError ("\nThe following packages are broken, either because they have a problem\n"++
+ "listed above, or because they depend on a broken package.")
+ mapM_ (hPutStrLn stderr . display . package) all_broken_pkgs
+
+ when (not (null all_broken_pkgs)) $ exitWith (ExitFailure 1)
+
+
+closure :: [InstalledPackageInfo] -> [InstalledPackageInfo]
+ -> ([InstalledPackageInfo], [InstalledPackageInfo])
+closure pkgs db_stack = go pkgs db_stack
+ where
+ go avail not_avail =
+ case partition (depsAvailable avail) not_avail of
+ ([], not_avail') -> (avail, not_avail')
+ (new_avail, not_avail') -> go (new_avail ++ avail) not_avail'
+
+ depsAvailable :: [InstalledPackageInfo] -> InstalledPackageInfo
+ -> Bool
+ depsAvailable pkgs_ok pkg = null dangling
+ where dangling = filter (`notElem` pids) (depends pkg)
+ pids = map package pkgs_ok
+
+ -- we want mutually recursive groups of package to show up
-- as broken. (#1750)
+brokenPackages :: [InstalledPackageInfo] -> [InstalledPackageInfo]
+brokenPackages pkgs = snd (closure [] pkgs)
+
-- -----------------------------------------------------------------------------
-- Manipulating package.conf files
writeNewConfig filename packages = do
hPutStr stdout "Writing new package config file... "
createDirectoryIfMissing True $ takeDirectory filename
- h <- openFile filename WriteMode `catch` \e ->
- if isPermissionError e
- then die (filename ++ ": you don't have permission to modify this file")
- else ioError e
let shown = concat $ intersperse ",\n "
$ map (show . convertPackageInfoOut) packages
fileContents = "[" ++ shown ++ "\n]"
- hPutStrLn h fileContents
- hClose h
+ writeFileAtomic filename fileContents
+ `catch` \e ->
+ if isPermissionError e
+ then die (filename ++ ": you don't have permission to modify this file")
+ else ioError e
hPutStrLn stdout "done."
-savingOldConfig :: FilePath -> IO () -> IO ()
-savingOldConfig filename io = Exception.block $ do
- hPutStr stdout "Saving old package config file... "
- -- mv rather than cp because we've already done an hGetContents
- -- on this file so we won't be able to open it for writing
- -- unless we move the old one out of the way...
- let oldFile = filename ++ ".old"
- restore_on_error <- catch (renameFile filename oldFile >> return True) $
- \err -> do
- unless (isDoesNotExistError err) $ do
- hPutStrLn stderr (unwords ["Unable to rename", show filename,
- "to", show oldFile])
- ioError err
- return False
- (do hPutStrLn stdout "done."; io)
- `Exception.catch` \e -> do
- hPutStr stdout ("WARNING: an error was encountered while writing "
- ++ "the new configuration.\n")
- -- remove any partially complete new version:
- try (removeFile filename)
- -- and attempt to restore the old one, if we had one:
- when restore_on_error $ do
- hPutStr stdout "Attempting to restore the old configuration... "
- do renameFile oldFile filename
- hPutStrLn stdout "done."
- `catch` \err -> hPutStrLn stdout ("Failed: " ++ show err)
- -- Note the above renameFile sometimes fails on Windows with
- -- "permission denied", I have no idea why --SDM.
- Exception.throwIO e
-
-----------------------------------------------------------------------------
-- Sanity-check a new package config, and automatically build GHCi libs
-- if requested.
+type ValidateError = (Force,String)
+
+newtype Validate a = V { runValidate :: IO (a, [ValidateError]) }
+
+instance Monad Validate where
+ return a = V $ return (a, [])
+ m >>= k = V $ do
+ (a, es) <- runValidate m
+ (b, es') <- runValidate (k a)
+ return (b,es++es')
+
+verror :: Force -> String -> Validate ()
+verror f s = V (return ((),[(f,s)]))
+
+liftIO :: IO a -> Validate a
+liftIO k = V (k >>= \a -> return (a,[]))
+
+-- returns False if we should die
+reportValidateErrors :: [ValidateError] -> String -> Maybe Force -> IO Bool
+reportValidateErrors es prefix mb_force = do
+ oks <- mapM report es
+ return (and oks)
+ where
+ report (f,s)
+ | Just force <- mb_force
+ = if (force >= f)
+ then do reportError (prefix ++ s ++ " (ignoring)")
+ return True
+ else if f < CannotForce
+ then do reportError (prefix ++ s ++ " (use --force to override)")
+ return False
+ else do reportError err
+ return False
+ | otherwise = do reportError err
+ return False
+ where
+ err = prefix ++ s
+
validatePackageConfig :: InstalledPackageInfo
-> PackageDBStack
-> Bool -- auto-ghc-libs
- -> Bool -- update
+ -> Bool -- update, or check
-> Force
-> IO ()
validatePackageConfig pkg db_stack auto_ghci_libs update force = do
+ (_,es) <- runValidate $ checkPackageConfig pkg db_stack auto_ghci_libs update
+ ok <- reportValidateErrors es (display (package pkg) ++ ": ") (Just force)
+ when (not ok) $ exitWith (ExitFailure 1)
+
+checkPackageConfig :: InstalledPackageInfo
+ -> PackageDBStack
+ -> Bool -- auto-ghc-libs
+ -> Bool -- update, or check
+ -> Validate ()
+checkPackageConfig pkg db_stack auto_ghci_libs update = do
checkPackageId pkg
- checkDuplicates db_stack pkg update force
- mapM_ (checkDep db_stack force) (depends pkg)
- mapM_ (checkDir force) (importDirs pkg)
- mapM_ (checkDir force) (libraryDirs pkg)
- mapM_ (checkDir force) (includeDirs pkg)
- mapM_ (checkHSLib (libraryDirs pkg) auto_ghci_libs force) (hsLibraries pkg)
+ checkDuplicates db_stack pkg update
+ mapM_ (checkDep db_stack) (depends pkg)
+ checkDuplicateDepends (depends pkg)
+ mapM_ (checkDir "import-dirs") (importDirs pkg)
+ mapM_ (checkDir "library-dirs") (libraryDirs pkg)
+ mapM_ (checkDir "include-dirs") (includeDirs pkg)
+ checkModules pkg
+ mapM_ (checkHSLib (libraryDirs pkg) auto_ghci_libs) (hsLibraries pkg)
-- ToDo: check these somehow?
-- extra_libraries :: [String],
-- c_includes :: [String],
-- end up with a package id that cannot be parsed. This will lead to
-- difficulties when the user wants to refer to the package later, so
-- we check that the package id can be parsed properly here.
-checkPackageId :: InstalledPackageInfo -> IO ()
+checkPackageId :: InstalledPackageInfo -> Validate ()
checkPackageId ipi =
let str = display (package ipi) in
case [ x :: PackageIdentifier | (x,ys) <- readP_to_S parse str, all isSpace ys ] of
[_] -> return ()
- [] -> die ("invalid package identifier: " ++ str)
- _ -> die ("ambiguous package identifier: " ++ str)
+ [] -> verror CannotForce ("invalid package identifier: " ++ str)
+ _ -> verror CannotForce ("ambiguous package identifier: " ++ str)
-checkDuplicates :: PackageDBStack -> InstalledPackageInfo -> Bool -> Force -> IO ()
-checkDuplicates db_stack pkg update force = do
+checkDuplicates :: PackageDBStack -> InstalledPackageInfo -> Bool -> Validate ()
+checkDuplicates db_stack pkg update = do
let
pkgid = package pkg
(_top_db_name, pkgs) : _ = db_stack
-- Check whether this package id already exists in this DB
--
when (not update && (pkgid `elem` map package pkgs)) $
- die ("package " ++ display pkgid ++ " is already installed")
+ verror CannotForce $
+ "package " ++ display pkgid ++ " is already installed"
let
uncasep = map toLower . display
dups = filter ((== uncasep pkgid) . uncasep) (map package pkgs)
- when (not update && not (null dups)) $ dieOrForceAll force $
+ when (not update && not (null dups)) $ verror ForceAll $
"Package names may be treated case-insensitively in the future.\n"++
"Package " ++ display pkgid ++
" overlaps with: " ++ unwords (map display dups)
-checkDir :: Force -> String -> IO ()
-checkDir force d
+checkDir :: String -> String -> Validate ()
+checkDir thisfield d
| "$topdir" `isPrefixOf` d = return ()
| "$httptopdir" `isPrefixOf` d = return ()
-- can't check these, because we don't know what $(http)topdir is
| otherwise = do
- there <- doesDirectoryExist d
- when (not there)
- (dieOrForceFile force (d ++ " doesn't exist or isn't a directory"))
+ there <- liftIO $ doesDirectoryExist d
+ when (not there) $
+ verror ForceFiles (thisfield ++ ": " ++ d ++ " doesn't exist or isn't a directory")
-checkDep :: PackageDBStack -> Force -> PackageIdentifier -> IO ()
-checkDep db_stack force pkgid
+checkDep :: PackageDBStack -> PackageIdentifier -> Validate ()
+checkDep db_stack pkgid
| pkgid `elem` pkgids || (not real_version && name_exists) = return ()
- | otherwise = dieOrForceAll force ("dependency " ++ display pkgid
- ++ " doesn't exist")
+ | otherwise = verror ForceAll ("dependency " ++ display pkgid
+ ++ " doesn't exist")
where
-- for backwards compat, we treat 0.0 as a special version,
-- and don't check that it actually exists.
all_pkgs = allPackagesInStack db_stack
pkgids = map package all_pkgs
+checkDuplicateDepends :: [PackageIdentifier] -> Validate ()
+checkDuplicateDepends deps
+ | null dups = return ()
+ | otherwise = verror ForceAll ("package has duplicate dependencies: " ++
+ unwords (map display dups))
+ where
+ dups = [ p | (p:_:_) <- group (sort deps) ]
+
realVersion :: PackageIdentifier -> Bool
realVersion pkgid = versionBranch (pkgVersion pkgid) /= []
-checkHSLib :: [String] -> Bool -> Force -> String -> IO ()
-checkHSLib dirs auto_ghci_libs force lib = do
+checkHSLib :: [String] -> Bool -> String -> Validate ()
+checkHSLib dirs auto_ghci_libs lib = do
let batch_lib_file = "lib" ++ lib ++ ".a"
- bs <- mapM (doesLibExistIn batch_lib_file) dirs
- case [ dir | (exists,dir) <- zip bs dirs, exists ] of
- [] -> dieOrForceFile force ("cannot find " ++ batch_lib_file ++
- " on library path")
- (dir:_) -> checkGHCiLib dirs dir batch_lib_file lib auto_ghci_libs
-
-doesLibExistIn :: String -> String -> IO Bool
-doesLibExistIn lib d
+ m <- liftIO $ doesFileExistOnPath batch_lib_file dirs
+ case m of
+ Nothing -> verror ForceFiles ("cannot find " ++ batch_lib_file ++
+ " on library path")
+ Just dir -> liftIO $ checkGHCiLib dirs dir batch_lib_file lib auto_ghci_libs
+
+doesFileExistOnPath :: String -> [FilePath] -> IO (Maybe FilePath)
+doesFileExistOnPath file path = go path
+ where go [] = return Nothing
+ go (p:ps) = do b <- doesFileExistIn file p
+ if b then return (Just p) else go ps
+
+doesFileExistIn :: String -> String -> IO Bool
+doesFileExistIn lib d
| "$topdir" `isPrefixOf` d = return True
| "$httptopdir" `isPrefixOf` d = return True
- | otherwise = doesFileExist (d ++ '/':lib)
+ | otherwise = doesFileExist (d </> lib)
+
+checkModules :: InstalledPackageInfo -> Validate ()
+checkModules pkg = do
+ mapM_ findModule (exposedModules pkg ++ hiddenModules pkg)
+ where
+ findModule modl = do
+ -- there's no .hi file for GHC.Prim
+ if modl == fromString "GHC.Prim" then return () else do
+ let file = toFilePath modl <.> "hi"
+ m <- liftIO $ doesFileExistOnPath file (importDirs pkg)
+ when (isNothing m) $
+ verror ForceFiles ("file " ++ file ++ " is missing")
checkGHCiLib :: [String] -> String -> String -> String -> Bool -> IO ()
checkGHCiLib dirs batch_lib_dir batch_lib_file lib auto_build
| auto_build = autoBuildGHCiLib batch_lib_dir batch_lib_file ghci_lib_file
| otherwise = do
- bs <- mapM (doesLibExistIn ghci_lib_file) dirs
- case [dir | (exists,dir) <- zip bs dirs, exists] of
- [] -> hPutStrLn stderr ("warning: can't find GHCi lib " ++ ghci_lib_file)
- (_:_) -> return ()
- where
- ghci_lib_file = lib ++ ".o"
+ m <- doesFileExistOnPath ghci_lib_file dirs
+ when (isNothing m && ghci_lib_file /= "HSrts.o") $
+ hPutStrLn stderr ("warning: can't find GHCi lib " ++ ghci_lib_file)
+ where
+ ghci_lib_file = lib <.> "o"
-- automatically build the GHCi version of a batch lib,
-- using ld --whole-archive.
#if defined(darwin_HOST_OS)
r <- rawSystem "ld" ["-r","-x","-o",ghci_lib_file,"-all_load",batch_lib_file]
#elif defined(mingw32_HOST_OS)
- execDir <- getExecDir "/bin/ghc-pkg.exe"
+ execDir <- getLibDir
r <- rawSystem (maybe "" (++"/gcc-lib/") execDir++"ld") ["-r","-x","-o",ghci_lib_file,"--whole-archive",batch_lib_file]
#else
r <- rawSystem "ld" ["-r","-x","-o",ghci_lib_file,"--whole-archive",batch_lib_file]
dieOrForceAll ForceAll s = ignoreError s
dieOrForceAll _other s = dieForcible s
-dieOrForceFile :: Force -> String -> IO ()
-dieOrForceFile ForceAll s = ignoreError s
-dieOrForceFile ForceFiles s = ignoreError s
-dieOrForceFile _other s = dieForcible s
-
ignoreError :: String -> IO ()
-ignoreError s = do hFlush stdout; hPutStrLn stderr (s ++ " (ignoring)")
+ignoreError s = reportError (s ++ " (ignoring)")
+
+reportError :: String -> IO ()
+reportError s = do hFlush stdout; hPutStrLn stderr s
dieForcible :: String -> IO ()
dieForcible s = die (s ++ " (use --force to override)")
unDosifyPath :: FilePath -> FilePath
unDosifyPath xs = subst '\\' '/' xs
-getExecDir :: String -> IO (Maybe String)
+getLibDir :: IO (Maybe String)
+getLibDir = fmap (fmap (</> "lib")) $ getExecDir "/bin/ghc-pkg.exe"
+
-- (getExecDir cmd) returns the directory in which the current
-- executable, which should be called 'cmd', is running
-- So if the full path is /a/b/c/d/e, and you pass "d/e" as cmd,
-- you'll get "/a/b/c" back as the result
-getExecDir cmd
- = allocaArray len $ \buf -> do
- ret <- getModuleFileName nullPtr buf len
- if ret == 0 then return Nothing
- else do s <- peekCString buf
- return (Just (reverse (drop (length cmd)
- (reverse (unDosifyPath s)))))
- where
- len = 2048::Int -- Plenty, PATH_MAX is 512 under Win32.
+getExecDir :: String -> IO (Maybe String)
+getExecDir cmd =
+ getExecPath >>= maybe (return Nothing) removeCmdSuffix
+ where unDosifyPath = subst '\\' '/'
+ initN n = reverse . drop n . reverse
+ removeCmdSuffix = return . Just . initN (length cmd) . unDosifyPath
+
+getExecPath :: IO (Maybe String)
+getExecPath =
+ allocaArray len $ \buf -> do
+ ret <- getModuleFileName nullPtr buf len
+ if ret == 0 then return Nothing
+ else liftM Just $ peekCString buf
+ where len = 2048 -- Plenty, PATH_MAX is 512 under Win32.
+
+foreign import stdcall unsafe "GetModuleFileNameA"
+ getModuleFileName :: Ptr () -> CString -> Int -> IO Int32
-foreign import stdcall unsafe "GetModuleFileNameA"
- getModuleFileName :: Ptr () -> CString -> Int -> IO Int32
#else
-getExecDir :: String -> IO (Maybe String)
-getExecDir _ = return Nothing
+getLibDir :: IO (Maybe String)
+getLibDir = return Nothing
#endif
-----------------------------------------
installSignalHandlers = do
threadid <- myThreadId
let
- interrupt = throwTo threadid (Exception.ErrorCall "interrupted")
+ interrupt = Exception.throwTo threadid
+ (Exception.ErrorCall "interrupted")
--
#if !defined(mingw32_HOST_OS)
- installHandler sigQUIT (Catch interrupt) Nothing
+ installHandler sigQUIT (Catch interrupt) Nothing
installHandler sigINT (Catch interrupt) Nothing
return ()
#elif __GLASGOW_HASKELL__ >= 603
isInfixOf :: (Eq a) => [a] -> [a] -> Bool
isInfixOf needle haystack = any (isPrefixOf needle) (tails haystack)
#endif
+
+#if mingw32_HOST_OS || mingw32_TARGET_OS
+throwIOIO :: Exception.IOException -> IO a
+throwIOIO = Exception.throwIO
+
+catchIO :: IO a -> (Exception.IOException -> IO a) -> IO a
+catchIO = Exception.catch
+#endif
+
+catchError :: IO a -> (String -> IO a) -> IO a
+catchError io handler = io `Exception.catch` handler'
+ where handler' (Exception.ErrorCall err) = handler err
+
+
+-- copied from Cabal's Distribution.Simple.Utils, except that we want
+-- to use text files here, rather than binary files.
+writeFileAtomic :: FilePath -> String -> IO ()
+writeFileAtomic targetFile content = do
+ (newFile, newHandle) <- openNewFile targetDir template
+ do hPutStr newHandle content
+ hClose newHandle
+#if mingw32_HOST_OS || mingw32_TARGET_OS
+ renameFile newFile targetFile
+ -- If the targetFile exists then renameFile will fail
+ `catchIO` \err -> do
+ exists <- doesFileExist targetFile
+ if exists
+ then do removeFile targetFile
+ -- Big fat hairy race condition
+ renameFile newFile targetFile
+ -- If the removeFile succeeds and the renameFile fails
+ -- then we've lost the atomic property.
+ else throwIOIO err
+#else
+ renameFile newFile targetFile
+#endif
+ `Exception.onException` do hClose newHandle
+ removeFile newFile
+ where
+ template = targetName <.> "tmp"
+ targetDir | null targetDir_ = "."
+ | otherwise = targetDir_
+ --TODO: remove this when takeDirectory/splitFileName is fixed
+ -- to always return a valid dir
+ (targetDir_,targetName) = splitFileName targetFile
+
+-- Ugh, this is a copy/paste of code from the base library, but
+-- if uses 666 rather than 600 for the permissions.
+openNewFile :: FilePath -> String -> IO (FilePath, Handle)
+openNewFile dir template = do
+ pid <- c_getpid
+ findTempName pid
+ where
+ -- We split off the last extension, so we can use .foo.ext files
+ -- for temporary files (hidden on Unix OSes). Unfortunately we're
+ -- below filepath in the hierarchy here.
+ (prefix,suffix) =
+ case break (== '.') $ reverse template of
+ -- First case: template contains no '.'s. Just re-reverse it.
+ (rev_suffix, "") -> (reverse rev_suffix, "")
+ -- Second case: template contains at least one '.'. Strip the
+ -- dot from the prefix and prepend it to the suffix (if we don't
+ -- do this, the unique number will get added after the '.' and
+ -- thus be part of the extension, which is wrong.)
+ (rev_suffix, '.':rest) -> (reverse rest, '.':reverse rev_suffix)
+ -- Otherwise, something is wrong, because (break (== '.')) should
+ -- always return a pair with either the empty string or a string
+ -- beginning with '.' as the second component.
+ _ -> error "bug in System.IO.openTempFile"
+
+ oflags = rw_flags .|. o_EXCL
+
+ findTempName x = do
+ fd <- withCString filepath $ \ f ->
+ c_open f oflags 0o666
+ if fd < 0
+ then do
+ errno <- getErrno
+ if errno == eEXIST
+ then findTempName (x+1)
+ else ioError (errnoToIOError "openNewBinaryFile" errno Nothing (Just dir))
+ else do
+ -- XXX We want to tell fdToHandle what the filepath is,
+ -- as any exceptions etc will only be able to report the
+ -- fd currently
+ h <-
+#if __GLASGOW_HASKELL__ >= 609
+ fdToHandle fd
+#else
+ fdToHandle (fromIntegral fd)
+#endif
+ `Exception.onException` c_close fd
+ return (filepath, h)
+ where
+ filename = prefix ++ show x ++ suffix
+ filepath = dir `combine` filename
+
+-- XXX Copied from GHC.Handle
+std_flags, output_flags, rw_flags :: CInt
+std_flags = o_NONBLOCK .|. o_NOCTTY
+output_flags = std_flags .|. o_CREAT
+rw_flags = output_flags .|. o_RDWR
+
+-- | The function splits the given string to substrings
+-- using 'isSearchPathSeparator'.
+parseSearchPath :: String -> [FilePath]
+parseSearchPath path = split path
+ where
+ split :: String -> [String]
+ split s =
+ case rest' of
+ [] -> [chunk]
+ _:rest -> chunk : split rest
+ where
+ chunk =
+ case chunk' of
+#ifdef mingw32_HOST_OS
+ ('\"':xs@(_:_)) | last xs == '\"' -> init xs
+#endif
+ _ -> chunk'
+
+ (chunk', rest') = break isSearchPathSeparator s
projects / ghc-hetmet.git / blobdiff