1 {-# OPTIONS -fglasgow-exts -cpp #-}
2 -----------------------------------------------------------------------------
4 -- (c) The University of Glasgow 2004.
6 -- Package management tool
8 -----------------------------------------------------------------------------
12 -- * expanding of variables in new-style package conf
13 -- * version manipulation (checking whether old version exists,
14 -- hiding old version?)
16 module Main (main) where
18 import Version ( version, targetOS, targetARCH )
19 import Distribution.InstalledPackageInfo hiding (depends)
20 import Distribution.Compat.ReadP
21 import Distribution.ParseUtils
22 import Distribution.Package
23 import Distribution.Text
24 import Distribution.Version
25 import System.FilePath
26 import System.Cmd ( rawSystem )
27 import System.Directory ( getAppUserDataDirectory, createDirectoryIfMissing )
31 #include "../../includes/ghcconfig.h"
33 import System.Console.GetOpt
34 import Text.PrettyPrint
35 import qualified Control.Exception as Exception
39 import Data.Char ( isSpace, toLower )
41 import System.Directory ( doesDirectoryExist, getDirectoryContents,
42 doesFileExist, renameFile, removeFile )
43 import System.Exit ( exitWith, ExitCode(..) )
44 import System.Environment ( getArgs, getProgName, getEnv )
46 import System.IO.Error (try)
48 import Control.Concurrent
51 #ifdef mingw32_HOST_OS
53 import GHC.ConsoleHandler
55 import System.Posix hiding (fdToHandle)
58 import IO ( isPermissionError )
59 import System.Posix.Internals
60 import GHC.Handle (fdToHandle)
63 import System.Process(runInteractiveCommand)
64 import qualified System.Info(os)
67 -- -----------------------------------------------------------------------------
74 case getOpt Permute (flags ++ deprecFlags) args of
75 (cli,_,[]) | FlagHelp `elem` cli -> do
76 prog <- getProgramName
77 bye (usageInfo (usageHeader prog) flags)
78 (cli,_,[]) | FlagVersion `elem` cli ->
83 prog <- getProgramName
84 die (concat errors ++ usageInfo (usageHeader prog) flags)
86 -- -----------------------------------------------------------------------------
87 -- Command-line syntax
95 | FlagGlobalConfig FilePath
105 flags :: [OptDescr Flag]
107 Option [] ["user"] (NoArg FlagUser)
108 "use the current user's package database",
109 Option [] ["global"] (NoArg FlagGlobal)
110 "use the global package database",
111 Option ['f'] ["package-conf"] (ReqArg FlagConfig "FILE")
112 "use the specified package config file",
113 Option [] ["global-conf"] (ReqArg FlagGlobalConfig "FILE")
114 "location of the global package config",
115 Option [] ["no-user-package-conf"] (NoArg FlagNoUserDb)
116 "never read the user package database",
117 Option [] ["force"] (NoArg FlagForce)
118 "ignore missing dependencies, directories, and libraries",
119 Option [] ["force-files"] (NoArg FlagForceFiles)
120 "ignore missing directories and libraries only",
121 Option ['g'] ["auto-ghci-libs"] (NoArg FlagAutoGHCiLibs)
122 "automatically build libs for GHCi (with register)",
123 Option ['?'] ["help"] (NoArg FlagHelp)
124 "display this help and exit",
125 Option ['V'] ["version"] (NoArg FlagVersion)
126 "output version information and exit",
127 Option [] ["simple-output"] (NoArg FlagSimpleOutput)
128 "print output in easy-to-parse format for some commands",
129 Option [] ["names-only"] (NoArg FlagNamesOnly)
130 "only print package names, not versions; can only be used with list --simple-output",
131 Option [] ["ignore-case"] (NoArg FlagIgnoreCase)
132 "ignore case for substring matching"
135 deprecFlags :: [OptDescr Flag]
137 -- put deprecated flags here
140 ourCopyright :: String
141 ourCopyright = "GHC package manager version " ++ Version.version ++ "\n"
143 usageHeader :: String -> String
144 usageHeader prog = substProg prog $
146 " $p register {filename | -}\n" ++
147 " Register the package using the specified installed package\n" ++
148 " description. The syntax for the latter is given in the $p\n" ++
149 " documentation.\n" ++
151 " $p update {filename | -}\n" ++
152 " Register the package, overwriting any other package with the\n" ++
155 " $p unregister {pkg-id}\n" ++
156 " Unregister the specified package.\n" ++
158 " $p expose {pkg-id}\n" ++
159 " Expose the specified package.\n" ++
161 " $p hide {pkg-id}\n" ++
162 " Hide the specified package.\n" ++
164 " $p list [pkg]\n" ++
165 " List registered packages in the global database, and also the\n" ++
166 " user database if --user is given. If a package name is given\n" ++
167 " all the registered versions will be listed in ascending order.\n" ++
168 " Accepts the --simple-output flag.\n" ++
170 " $p find-module {module}\n" ++
171 " List registered packages exposing module {module} in the global\n" ++
172 " database, and also the user database if --user is given.\n" ++
173 " All the registered versions will be listed in ascending order.\n" ++
174 " Accepts the --simple-output flag.\n" ++
176 " $p latest {pkg-id}\n" ++
177 " Prints the highest registered version of a package.\n" ++
180 " Check the consistency of package depenencies and list broken packages.\n" ++
181 " Accepts the --simple-output flag.\n" ++
183 " $p describe {pkg}\n" ++
184 " Give the registered description for the specified package. The\n" ++
185 " description is returned in precisely the syntax required by $p\n" ++
188 " $p field {pkg} {field}\n" ++
189 " Extract the specified field of the package description for the\n" ++
190 " specified package. Accepts comma-separated multiple fields.\n" ++
193 " Dump the registered description for every package. This is like\n" ++
194 " \"ghc-pkg describe '*'\", except that it is intended to be used\n" ++
195 " by tools that parse the results, rather than humans.\n" ++
197 " Substring matching is supported for {module} in find-module and\n" ++
198 " for {pkg} in list, describe, and field, where a '*' indicates\n" ++
199 " open substring ends (prefix*, *suffix, *infix*).\n" ++
201 " When asked to modify a database (register, unregister, update,\n"++
202 " hide, expose, and also check), ghc-pkg modifies the global database by\n"++
203 " default. Specifying --user causes it to act on the user database,\n"++
204 " or --package-conf can be used to act on another database\n"++
205 " entirely. When multiple of these options are given, the rightmost\n"++
206 " one is used as the database to act upon.\n"++
208 " Commands that query the package database (list, latest, describe,\n"++
209 " field) operate on the list of databases specified by the flags\n"++
210 " --user, --global, and --package-conf. If none of these flags are\n"++
211 " given, the default is --global --user.\n"++
213 " The following optional flags are also accepted:\n"
215 substProg :: String -> String -> String
217 substProg prog ('$':'p':xs) = prog ++ substProg prog xs
218 substProg prog (c:xs) = c : substProg prog xs
220 -- -----------------------------------------------------------------------------
223 data Force = ForceAll | ForceFiles | NoForce
225 data PackageArg = Id PackageIdentifier | Substring String (String->Bool)
227 runit :: [Flag] -> [String] -> IO ()
228 runit cli nonopts = do
229 installSignalHandlers -- catch ^C and clean up
230 prog <- getProgramName
233 | FlagForce `elem` cli = ForceAll
234 | FlagForceFiles `elem` cli = ForceFiles
235 | otherwise = NoForce
236 auto_ghci_libs = FlagAutoGHCiLibs `elem` cli
237 splitFields fields = unfoldr splitComma (',':fields)
238 where splitComma "" = Nothing
239 splitComma fs = Just $ break (==',') (tail fs)
241 substringCheck :: String -> Maybe (String -> Bool)
242 substringCheck "" = Nothing
243 substringCheck "*" = Just (const True)
244 substringCheck [_] = Nothing
245 substringCheck (h:t) =
246 case (h, init t, last t) of
247 ('*',s,'*') -> Just (isInfixOf (f s) . f)
248 ('*',_, _ ) -> Just (isSuffixOf (f t) . f)
249 ( _ ,s,'*') -> Just (isPrefixOf (f (h:s)) . f)
251 where f | FlagIgnoreCase `elem` cli = map toLower
254 glob x | System.Info.os=="mingw32" = do
255 -- glob echoes its argument, after win32 filename globbing
256 (_,o,_,_) <- runInteractiveCommand ("glob "++x)
257 txt <- hGetContents o
259 glob x | otherwise = return [x]
262 -- first, parse the command
265 -- dummy command to demonstrate usage and permit testing
266 -- without messing things up; use glob to selectively enable
267 -- windows filename globbing for file parameters
268 -- register, update, FlagGlobalConfig, FlagConfig; others?
269 ["glob", filename] -> do
271 glob filename >>= print
273 ["register", filename] ->
274 registerPackage filename cli auto_ghci_libs False force
275 ["update", filename] ->
276 registerPackage filename cli auto_ghci_libs True force
277 ["unregister", pkgid_str] -> do
278 pkgid <- readGlobPkgId pkgid_str
279 unregisterPackage pkgid cli force
280 ["expose", pkgid_str] -> do
281 pkgid <- readGlobPkgId pkgid_str
282 exposePackage pkgid cli force
283 ["hide", pkgid_str] -> do
284 pkgid <- readGlobPkgId pkgid_str
285 hidePackage pkgid cli force
287 listPackages cli Nothing Nothing
288 ["list", pkgid_str] ->
289 case substringCheck pkgid_str of
290 Nothing -> do pkgid <- readGlobPkgId pkgid_str
291 listPackages cli (Just (Id pkgid)) Nothing
292 Just m -> listPackages cli (Just (Substring pkgid_str m)) Nothing
293 ["find-module", moduleName] -> do
294 let match = maybe (==moduleName) id (substringCheck moduleName)
295 listPackages cli Nothing (Just match)
296 ["latest", pkgid_str] -> do
297 pkgid <- readGlobPkgId pkgid_str
298 latestPackage cli pkgid
299 ["describe", pkgid_str] ->
300 case substringCheck pkgid_str of
301 Nothing -> do pkgid <- readGlobPkgId pkgid_str
302 describePackage cli (Id pkgid)
303 Just m -> describePackage cli (Substring pkgid_str m)
304 ["field", pkgid_str, fields] ->
305 case substringCheck pkgid_str of
306 Nothing -> do pkgid <- readGlobPkgId pkgid_str
307 describeField cli (Id pkgid) (splitFields fields)
308 Just m -> describeField cli (Substring pkgid_str m)
317 die ("missing command\n" ++
318 usageInfo (usageHeader prog) flags)
320 die ("command-line syntax error\n" ++
321 usageInfo (usageHeader prog) flags)
323 parseCheck :: ReadP a a -> String -> String -> IO a
324 parseCheck parser str what =
325 case [ x | (x,ys) <- readP_to_S parser str, all isSpace ys ] of
327 _ -> die ("cannot parse \'" ++ str ++ "\' as a " ++ what)
329 readGlobPkgId :: String -> IO PackageIdentifier
330 readGlobPkgId str = parseCheck parseGlobPackageId str "package identifier"
332 parseGlobPackageId :: ReadP r PackageIdentifier
338 return (PackageIdentifier{ pkgName = n, pkgVersion = globVersion }))
340 -- globVersion means "all versions"
341 globVersion :: Version
342 globVersion = Version{ versionBranch=[], versionTags=["*"] }
344 -- -----------------------------------------------------------------------------
347 -- Some commands operate on a single database:
348 -- register, unregister, expose, hide
349 -- however these commands also check the union of the available databases
350 -- in order to check consistency. For example, register will check that
351 -- dependencies exist before registering a package.
353 -- Some commands operate on multiple databases, with overlapping semantics:
354 -- list, describe, field
356 type PackageDBName = FilePath
357 type PackageDB = [InstalledPackageInfo]
359 type NamedPackageDB = (PackageDBName, PackageDB)
360 type PackageDBStack = [NamedPackageDB]
361 -- A stack of package databases. Convention: head is the topmost
362 -- in the stack. Earlier entries override later one.
364 allPackagesInStack :: PackageDBStack -> [InstalledPackageInfo]
365 allPackagesInStack = concatMap snd
367 getPkgDatabases :: Bool -> [Flag] -> IO (PackageDBStack, Maybe PackageDBName)
368 getPkgDatabases modify my_flags = do
369 -- first we determine the location of the global package config. On Windows,
370 -- this is found relative to the ghc-pkg.exe binary, whereas on Unix the
371 -- location is passed to the binary using the --global-config flag by the
373 let err_msg = "missing --global-conf option, location of global package.conf unknown\n"
375 case [ f | FlagGlobalConfig f <- my_flags ] of
376 [] -> do mb_dir <- getExecDir "/bin/ghc-pkg.exe"
378 Nothing -> die err_msg
380 do let path1 = dir </> "package.conf"
381 path2 = dir </> ".." </> ".." </> ".."
382 </> "inplace-datadir"
384 exists1 <- doesFileExist path1
385 exists2 <- doesFileExist path2
386 if exists1 then return path1
387 else if exists2 then return path2
388 else die "Can't find package.conf"
389 fs -> return (last fs)
391 let global_conf_dir = global_conf ++ ".d"
392 global_conf_dir_exists <- doesDirectoryExist global_conf_dir
394 if global_conf_dir_exists
395 then do files <- getDirectoryContents global_conf_dir
396 return [ global_conf_dir ++ '/' : file
398 , isSuffixOf ".conf" file]
401 let no_user_db = FlagNoUserDb `elem` my_flags
403 -- get the location of the user package database, and create it if necessary
404 -- getAppUserDataDirectory can fail (e.g. if $HOME isn't set)
405 appdir <- try $ getAppUserDataDirectory "ghc"
408 if no_user_db then return Nothing else
411 let subdir = targetARCH ++ '-':targetOS ++ '-':Version.version
412 user_conf = dir </> subdir </> "package.conf"
413 user_exists <- doesFileExist user_conf
414 return (Just (user_conf,user_exists))
418 -- If the user database doesn't exist, and this command isn't a
419 -- "modify" command, then we won't attempt to create or use it.
421 | Just (user_conf,user_exists) <- mb_user_conf,
422 modify || user_exists = user_conf : global_confs ++ [global_conf]
423 | otherwise = global_confs ++ [global_conf]
425 e_pkg_path <- try (System.Environment.getEnv "GHC_PACKAGE_PATH")
428 Left _ -> sys_databases
430 | last cs == "" -> init cs ++ sys_databases
432 where cs = parseSearchPath path
434 -- The "global" database is always the one at the bottom of the stack.
435 -- This is the database we modify by default.
436 virt_global_conf = last env_stack
438 let db_flags = [ f | Just f <- map is_db_flag my_flags ]
439 where is_db_flag FlagUser
440 | Just (user_conf, _user_exists) <- mb_user_conf
442 is_db_flag FlagGlobal = Just virt_global_conf
443 is_db_flag (FlagConfig f) = Just f
444 is_db_flag _ = Nothing
446 (final_stack, to_modify) <-
448 then -- For a "read" command, we use all the databases
449 -- specified on the command line. If there are no
450 -- command-line flags specifying databases, the default
451 -- is to use all the ones we know about.
452 if null db_flags then return (env_stack, Nothing)
453 else return (reverse (nub db_flags), Nothing)
455 -- For a "modify" command, treat all the databases as
456 -- a stack, where we are modifying the top one, but it
457 -- can refer to packages in databases further down the
460 -- -f flags on the command line add to the database
461 -- stack, unless any of them are present in the stack
463 flag_stack = filter (`notElem` env_stack)
464 [ f | FlagConfig f <- reverse my_flags ]
467 -- the database we actually modify is the one mentioned
468 -- rightmost on the command-line.
469 to_modify = if null db_flags
470 then Just virt_global_conf
471 else Just (last db_flags)
473 return (flag_stack, to_modify)
475 db_stack <- mapM readParseDatabase final_stack
476 return (db_stack, to_modify)
478 readParseDatabase :: PackageDBName -> IO (PackageDBName,PackageDB)
479 readParseDatabase filename = do
480 str <- readFile filename `catchIO` \_ -> return emptyPackageConfig
481 let packages = map convertPackageInfoIn $ read str
482 Exception.evaluate packages
484 die ("error while parsing " ++ filename ++ ": " ++ show e)
485 return (filename,packages)
487 emptyPackageConfig :: String
488 emptyPackageConfig = "[]"
490 -- -----------------------------------------------------------------------------
493 registerPackage :: FilePath
495 -> Bool -- auto_ghci_libs
499 registerPackage input my_flags auto_ghci_libs update force = do
500 (db_stack, Just to_modify) <- getPkgDatabases True my_flags
502 db_to_operate_on = my_head "register" $
503 filter ((== to_modify).fst) db_stack
508 putStr "Reading package info from stdin ... "
511 putStr ("Reading package info from " ++ show f ++ " ... ")
514 expanded <- expandEnvVars s force
516 pkg <- parsePackageInfo expanded
519 let truncated_stack = dropWhile ((/= to_modify).fst) db_stack
520 -- truncate the stack for validation, because we don't allow
521 -- packages lower in the stack to refer to those higher up.
522 validatePackageConfig pkg truncated_stack auto_ghci_libs update force
523 let new_details = filter not_this (snd db_to_operate_on) ++ [pkg]
524 not_this p = package p /= package pkg
525 writeNewConfig to_modify new_details
529 -> IO InstalledPackageInfo
530 parsePackageInfo str =
531 case parseInstalledPackageInfo str of
532 ParseOk _warns ok -> return ok
533 ParseFailed err -> case locatedErrorMsg err of
534 (Nothing, s) -> die s
535 (Just l, s) -> die (show l ++ ": " ++ s)
537 -- -----------------------------------------------------------------------------
538 -- Exposing, Hiding, Unregistering are all similar
540 exposePackage :: PackageIdentifier -> [Flag] -> Force -> IO ()
541 exposePackage = modifyPackage (\p -> [p{exposed=True}])
543 hidePackage :: PackageIdentifier -> [Flag] -> Force -> IO ()
544 hidePackage = modifyPackage (\p -> [p{exposed=False}])
546 unregisterPackage :: PackageIdentifier -> [Flag] -> Force -> IO ()
547 unregisterPackage = modifyPackage (\_ -> [])
550 :: (InstalledPackageInfo -> [InstalledPackageInfo])
555 modifyPackage fn pkgid my_flags force = do
556 (db_stack, Just _to_modify) <- getPkgDatabases True{-modify-} my_flags
557 ((db_name, pkgs), ps) <- fmap head $ findPackagesByDB db_stack (Id pkgid)
558 -- let ((db_name, pkgs) : rest_of_stack) = db_stack
559 -- ps <- findPackages [(db_name,pkgs)] (Id pkgid)
561 pids = map package ps
563 | package pkg `elem` pids = fn pkg
565 new_config = concat (map modify pkgs)
568 old_broken = brokenPackages (allPackagesInStack db_stack)
569 rest_of_stack = [ (nm, mypkgs)
570 | (nm, mypkgs) <- db_stack, nm /= db_name ]
571 new_stack = (db_name,new_config) : rest_of_stack
572 new_broken = map package (brokenPackages (allPackagesInStack new_stack))
573 newly_broken = filter (`notElem` map package old_broken) new_broken
575 when (not (null newly_broken)) $
576 dieOrForceAll force ("unregistering " ++ display pkgid ++
577 " would break the following packages: "
578 ++ unwords (map display newly_broken))
580 writeNewConfig db_name new_config
582 -- -----------------------------------------------------------------------------
585 listPackages :: [Flag] -> Maybe PackageArg -> Maybe (String->Bool) -> IO ()
586 listPackages my_flags mPackageName mModuleName = do
587 let simple_output = FlagSimpleOutput `elem` my_flags
588 (db_stack, _) <- getPkgDatabases False my_flags
589 let db_stack_filtered -- if a package is given, filter out all other packages
590 | Just this <- mPackageName =
591 map (\(conf,pkgs) -> (conf, filter (this `matchesPkg`) pkgs))
593 | Just match <- mModuleName = -- packages which expose mModuleName
594 map (\(conf,pkgs) -> (conf, filter (match `exposedInPkg`) pkgs))
596 | otherwise = db_stack
599 = [ (db, sort_pkgs pkgs) | (db,pkgs) <- db_stack_filtered ]
600 where sort_pkgs = sortBy cmpPkgIds
601 cmpPkgIds pkg1 pkg2 =
602 case pkgName p1 `compare` pkgName p2 of
605 EQ -> pkgVersion p1 `compare` pkgVersion p2
606 where (p1,p2) = (package pkg1, package pkg2)
608 match `exposedInPkg` pkg = any match (map display $ exposedModules pkg)
610 pkg_map = allPackagesInStack db_stack
611 show_func = if simple_output then show_simple else mapM_ (show_normal pkg_map)
613 show_func (reverse db_stack_sorted)
615 where show_normal pkg_map (db_name,pkg_confs) =
616 hPutStrLn stdout (render $
617 text db_name <> colon $$ nest 4 packages
619 where packages = fsep (punctuate comma (map pp_pkg pkg_confs))
620 broken = map package (brokenPackages pkg_map)
622 | package p `elem` broken = braces doc
624 | otherwise = parens doc
625 where doc = text (display (package p))
627 show_simple db_stack = do
628 let showPkg = if FlagNamesOnly `elem` my_flags then display . pkgName
630 pkgs = map showPkg $ sortBy compPkgIdVer $
631 map package (allPackagesInStack db_stack)
632 when (not (null pkgs)) $
633 hPutStrLn stdout $ concat $ intersperse " " pkgs
635 -- -----------------------------------------------------------------------------
636 -- Prints the highest (hidden or exposed) version of a package
638 latestPackage :: [Flag] -> PackageIdentifier -> IO ()
639 latestPackage my_flags pkgid = do
640 (db_stack, _) <- getPkgDatabases False my_flags
641 ps <- findPackages db_stack (Id pkgid)
642 show_pkg (sortBy compPkgIdVer (map package ps))
644 show_pkg [] = die "no matches"
645 show_pkg pids = hPutStrLn stdout (display (last pids))
647 -- -----------------------------------------------------------------------------
650 describePackage :: [Flag] -> PackageArg -> IO ()
651 describePackage my_flags pkgarg = do
652 (db_stack, _) <- getPkgDatabases False my_flags
653 ps <- findPackages db_stack pkgarg
656 dumpPackages :: [Flag] -> IO ()
657 dumpPackages my_flags = do
658 (db_stack, _) <- getPkgDatabases False my_flags
659 doDump (allPackagesInStack db_stack)
661 doDump :: [InstalledPackageInfo] -> IO ()
662 doDump = mapM_ putStrLn . intersperse "---" . map showInstalledPackageInfo
664 -- PackageId is can have globVersion for the version
665 findPackages :: PackageDBStack -> PackageArg -> IO [InstalledPackageInfo]
666 findPackages db_stack pkgarg
667 = fmap (concatMap snd) $ findPackagesByDB db_stack pkgarg
669 findPackagesByDB :: PackageDBStack -> PackageArg
670 -> IO [(NamedPackageDB, [InstalledPackageInfo])]
671 findPackagesByDB db_stack pkgarg
672 = case [ (db, matched)
673 | db@(_, pkgs) <- db_stack,
674 let matched = filter (pkgarg `matchesPkg`) pkgs,
675 not (null matched) ] of
676 [] -> die ("cannot find package " ++ pkg_msg pkgarg)
679 pkg_msg (Id pkgid) = display pkgid
680 pkg_msg (Substring pkgpat _) = "matching " ++ pkgpat
682 matches :: PackageIdentifier -> PackageIdentifier -> Bool
684 = (pkgName pid == pkgName pid')
685 && (pkgVersion pid == pkgVersion pid' || not (realVersion pid))
687 matchesPkg :: PackageArg -> InstalledPackageInfo -> Bool
688 (Id pid) `matchesPkg` pkg = pid `matches` package pkg
689 (Substring _ m) `matchesPkg` pkg = m (display (package pkg))
691 compPkgIdVer :: PackageIdentifier -> PackageIdentifier -> Ordering
692 compPkgIdVer p1 p2 = pkgVersion p1 `compare` pkgVersion p2
694 -- -----------------------------------------------------------------------------
697 describeField :: [Flag] -> PackageArg -> [String] -> IO ()
698 describeField my_flags pkgarg fields = do
699 (db_stack, _) <- getPkgDatabases False my_flags
700 fns <- toFields fields
701 ps <- findPackages db_stack pkgarg
702 let top_dir = takeDirectory (fst (last db_stack))
703 mapM_ (selectFields fns) (mungePackagePaths top_dir ps)
704 where toFields [] = return []
705 toFields (f:fs) = case toField f of
706 Nothing -> die ("unknown field: " ++ f)
707 Just fn -> do fns <- toFields fs
709 selectFields fns info = mapM_ (\fn->putStrLn (fn info)) fns
711 mungePackagePaths :: String -> [InstalledPackageInfo] -> [InstalledPackageInfo]
712 -- Replace the strings "$topdir" and "$httptopdir" at the beginning of a path
713 -- with the current topdir (obtained from the -B option).
714 mungePackagePaths top_dir ps = map munge_pkg ps
716 munge_pkg p = p{ importDirs = munge_paths (importDirs p),
717 includeDirs = munge_paths (includeDirs p),
718 libraryDirs = munge_paths (libraryDirs p),
719 frameworkDirs = munge_paths (frameworkDirs p),
720 haddockInterfaces = munge_paths (haddockInterfaces p),
721 haddockHTMLs = munge_paths (haddockHTMLs p)
724 munge_paths = map munge_path
727 | Just p' <- maybePrefixMatch "$topdir" p = top_dir ++ p'
728 | Just p' <- maybePrefixMatch "$httptopdir" p = toHttpPath top_dir ++ p'
731 toHttpPath p = "file:///" ++ p
733 maybePrefixMatch :: String -> String -> Maybe String
734 maybePrefixMatch [] rest = Just rest
735 maybePrefixMatch (_:_) [] = Nothing
736 maybePrefixMatch (p:pat) (r:rest)
737 | p == r = maybePrefixMatch pat rest
738 | otherwise = Nothing
740 toField :: String -> Maybe (InstalledPackageInfo -> String)
741 -- backwards compatibility:
742 toField "import_dirs" = Just $ strList . importDirs
743 toField "source_dirs" = Just $ strList . importDirs
744 toField "library_dirs" = Just $ strList . libraryDirs
745 toField "hs_libraries" = Just $ strList . hsLibraries
746 toField "extra_libraries" = Just $ strList . extraLibraries
747 toField "include_dirs" = Just $ strList . includeDirs
748 toField "c_includes" = Just $ strList . includes
749 toField "package_deps" = Just $ strList . map display. depends
750 toField "extra_cc_opts" = Just $ strList . ccOptions
751 toField "extra_ld_opts" = Just $ strList . ldOptions
752 toField "framework_dirs" = Just $ strList . frameworkDirs
753 toField "extra_frameworks"= Just $ strList . frameworks
754 toField s = showInstalledPackageInfoField s
756 strList :: [String] -> String
760 -- -----------------------------------------------------------------------------
761 -- Check: Check consistency of installed packages
763 checkConsistency :: [Flag] -> IO ()
764 checkConsistency my_flags = do
765 (db_stack, _) <- getPkgDatabases True my_flags
766 -- check behaves like modify for the purposes of deciding which
767 -- databases to use, because ordering is important.
768 let pkgs = allPackagesInStack db_stack
769 broken_pkgs = brokenPackages pkgs
770 broken_ids = map package broken_pkgs
771 broken_why = [ (package p, filter (`elem` broken_ids) (depends p))
773 mapM_ (putStrLn . render . show_func) broken_why
775 show_func | FlagSimpleOutput `elem` my_flags = show_simple
776 | otherwise = show_normal
777 show_simple (pid,deps) =
778 text (display pid) <> colon
779 <+> fsep (punctuate comma (map (text . display) deps))
780 show_normal (pid,deps) =
781 text "package" <+> text (display pid) <+> text "has missing dependencies:"
782 $$ nest 4 (fsep (punctuate comma (map (text . display) deps)))
785 brokenPackages :: [InstalledPackageInfo] -> [InstalledPackageInfo]
786 brokenPackages pkgs = go [] pkgs
789 case partition (depsAvailable avail) not_avail of
790 ([], not_avail') -> not_avail'
791 (new_avail, not_avail') -> go (new_avail ++ avail) not_avail'
793 depsAvailable :: [InstalledPackageInfo] -> InstalledPackageInfo
795 depsAvailable pkgs_ok pkg = null dangling
796 where dangling = filter (`notElem` pids) (depends pkg)
797 pids = map package pkgs_ok
799 -- we want mutually recursive groups of package to show up
800 -- as broken. (#1750)
802 -- -----------------------------------------------------------------------------
803 -- Manipulating package.conf files
805 type InstalledPackageInfoString = InstalledPackageInfo_ String
807 convertPackageInfoOut :: InstalledPackageInfo -> InstalledPackageInfoString
808 convertPackageInfoOut
809 (pkgconf@(InstalledPackageInfo { exposedModules = e,
810 hiddenModules = h })) =
811 pkgconf{ exposedModules = map display e,
812 hiddenModules = map display h }
814 convertPackageInfoIn :: InstalledPackageInfoString -> InstalledPackageInfo
816 (pkgconf@(InstalledPackageInfo { exposedModules = e,
817 hiddenModules = h })) =
818 pkgconf{ exposedModules = map convert e,
819 hiddenModules = map convert h }
820 where convert = fromJust . simpleParse
822 writeNewConfig :: FilePath -> [InstalledPackageInfo] -> IO ()
823 writeNewConfig filename packages = do
824 hPutStr stdout "Writing new package config file... "
825 createDirectoryIfMissing True $ takeDirectory filename
826 let shown = concat $ intersperse ",\n "
827 $ map (show . convertPackageInfoOut) packages
828 fileContents = "[" ++ shown ++ "\n]"
829 writeFileAtomic filename fileContents
831 if isPermissionError e
832 then die (filename ++ ": you don't have permission to modify this file")
834 hPutStrLn stdout "done."
836 -----------------------------------------------------------------------------
837 -- Sanity-check a new package config, and automatically build GHCi libs
840 validatePackageConfig :: InstalledPackageInfo
842 -> Bool -- auto-ghc-libs
846 validatePackageConfig pkg db_stack auto_ghci_libs update force = do
848 checkDuplicates db_stack pkg update force
849 mapM_ (checkDep db_stack force) (depends pkg)
850 checkDuplicateDepends force (depends pkg)
851 mapM_ (checkDir force) (importDirs pkg)
852 mapM_ (checkDir force) (libraryDirs pkg)
853 mapM_ (checkDir force) (includeDirs pkg)
854 mapM_ (checkHSLib (libraryDirs pkg) auto_ghci_libs force) (hsLibraries pkg)
855 -- ToDo: check these somehow?
856 -- extra_libraries :: [String],
857 -- c_includes :: [String],
859 -- When the package name and version are put together, sometimes we can
860 -- end up with a package id that cannot be parsed. This will lead to
861 -- difficulties when the user wants to refer to the package later, so
862 -- we check that the package id can be parsed properly here.
863 checkPackageId :: InstalledPackageInfo -> IO ()
865 let str = display (package ipi) in
866 case [ x :: PackageIdentifier | (x,ys) <- readP_to_S parse str, all isSpace ys ] of
868 [] -> die ("invalid package identifier: " ++ str)
869 _ -> die ("ambiguous package identifier: " ++ str)
871 checkDuplicates :: PackageDBStack -> InstalledPackageInfo -> Bool -> Force -> IO ()
872 checkDuplicates db_stack pkg update force = do
875 (_top_db_name, pkgs) : _ = db_stack
877 -- Check whether this package id already exists in this DB
879 when (not update && (pkgid `elem` map package pkgs)) $
880 die ("package " ++ display pkgid ++ " is already installed")
883 uncasep = map toLower . display
884 dups = filter ((== uncasep pkgid) . uncasep) (map package pkgs)
886 when (not update && not (null dups)) $ dieOrForceAll force $
887 "Package names may be treated case-insensitively in the future.\n"++
888 "Package " ++ display pkgid ++
889 " overlaps with: " ++ unwords (map display dups)
892 checkDir :: Force -> String -> IO ()
894 | "$topdir" `isPrefixOf` d = return ()
895 | "$httptopdir" `isPrefixOf` d = return ()
896 -- can't check these, because we don't know what $(http)topdir is
898 there <- doesDirectoryExist d
900 (dieOrForceFile force (d ++ " doesn't exist or isn't a directory"))
902 checkDep :: PackageDBStack -> Force -> PackageIdentifier -> IO ()
903 checkDep db_stack force pkgid
904 | pkgid `elem` pkgids || (not real_version && name_exists) = return ()
905 | otherwise = dieOrForceAll force ("dependency " ++ display pkgid
908 -- for backwards compat, we treat 0.0 as a special version,
909 -- and don't check that it actually exists.
910 real_version = realVersion pkgid
912 name_exists = any (\p -> pkgName (package p) == name) all_pkgs
915 all_pkgs = allPackagesInStack db_stack
916 pkgids = map package all_pkgs
918 checkDuplicateDepends :: Force -> [PackageIdentifier] -> IO ()
919 checkDuplicateDepends force deps
920 | null dups = return ()
921 | otherwise = dieOrForceAll force ("package has duplicate dependencies: " ++
922 unwords (map display dups))
924 dups = [ p | (p:_:_) <- group (sort deps) ]
926 realVersion :: PackageIdentifier -> Bool
927 realVersion pkgid = versionBranch (pkgVersion pkgid) /= []
929 checkHSLib :: [String] -> Bool -> Force -> String -> IO ()
930 checkHSLib dirs auto_ghci_libs force lib = do
931 let batch_lib_file = "lib" ++ lib ++ ".a"
932 bs <- mapM (doesLibExistIn batch_lib_file) dirs
933 case [ dir | (exists,dir) <- zip bs dirs, exists ] of
934 [] -> dieOrForceFile force ("cannot find " ++ batch_lib_file ++
936 (dir:_) -> checkGHCiLib dirs dir batch_lib_file lib auto_ghci_libs
938 doesLibExistIn :: String -> String -> IO Bool
940 | "$topdir" `isPrefixOf` d = return True
941 | "$httptopdir" `isPrefixOf` d = return True
942 | otherwise = doesFileExist (d ++ '/':lib)
944 checkGHCiLib :: [String] -> String -> String -> String -> Bool -> IO ()
945 checkGHCiLib dirs batch_lib_dir batch_lib_file lib auto_build
946 | auto_build = autoBuildGHCiLib batch_lib_dir batch_lib_file ghci_lib_file
948 bs <- mapM (doesLibExistIn ghci_lib_file) dirs
949 case [dir | (exists,dir) <- zip bs dirs, exists] of
950 [] -> hPutStrLn stderr ("warning: can't find GHCi lib " ++ ghci_lib_file)
953 ghci_lib_file = lib ++ ".o"
955 -- automatically build the GHCi version of a batch lib,
956 -- using ld --whole-archive.
958 autoBuildGHCiLib :: String -> String -> String -> IO ()
959 autoBuildGHCiLib dir batch_file ghci_file = do
960 let ghci_lib_file = dir ++ '/':ghci_file
961 batch_lib_file = dir ++ '/':batch_file
962 hPutStr stderr ("building GHCi library " ++ ghci_lib_file ++ "...")
963 #if defined(darwin_HOST_OS)
964 r <- rawSystem "ld" ["-r","-x","-o",ghci_lib_file,"-all_load",batch_lib_file]
965 #elif defined(mingw32_HOST_OS)
966 execDir <- getExecDir "/bin/ghc-pkg.exe"
967 r <- rawSystem (maybe "" (++"/gcc-lib/") execDir++"ld") ["-r","-x","-o",ghci_lib_file,"--whole-archive",batch_lib_file]
969 r <- rawSystem "ld" ["-r","-x","-o",ghci_lib_file,"--whole-archive",batch_lib_file]
971 when (r /= ExitSuccess) $ exitWith r
972 hPutStrLn stderr (" done.")
974 -- -----------------------------------------------------------------------------
975 -- Searching for modules
979 findModules :: [FilePath] -> IO [String]
981 mms <- mapM searchDir paths
984 searchDir path prefix = do
985 fs <- getDirectoryEntries path `catch` \_ -> return []
986 searchEntries path prefix fs
988 searchEntries path prefix [] = return []
989 searchEntries path prefix (f:fs)
990 | looks_like_a_module = do
991 ms <- searchEntries path prefix fs
992 return (prefix `joinModule` f : ms)
993 | looks_like_a_component = do
994 ms <- searchDir (path </> f) (prefix `joinModule` f)
995 ms' <- searchEntries path prefix fs
998 searchEntries path prefix fs
1001 (base,suffix) = splitFileExt f
1002 looks_like_a_module =
1003 suffix `elem` haskell_suffixes &&
1004 all okInModuleName base
1005 looks_like_a_component =
1006 null suffix && all okInModuleName base
1012 -- ---------------------------------------------------------------------------
1013 -- expanding environment variables in the package configuration
1015 expandEnvVars :: String -> Force -> IO String
1016 expandEnvVars str0 force = go str0 ""
1018 go "" acc = return $! reverse acc
1019 go ('$':'{':str) acc | (var, '}':rest) <- break close str
1020 = do value <- lookupEnvVar var
1021 go rest (reverse value ++ acc)
1022 where close c = c == '}' || c == '\n' -- don't span newlines
1026 lookupEnvVar :: String -> IO String
1028 catch (System.Environment.getEnv nm)
1029 (\ _ -> do dieOrForceAll force ("Unable to expand variable " ++
1033 -----------------------------------------------------------------------------
1035 getProgramName :: IO String
1036 getProgramName = liftM (`withoutSuffix` ".bin") getProgName
1037 where str `withoutSuffix` suff
1038 | suff `isSuffixOf` str = take (length str - length suff) str
1041 bye :: String -> IO a
1042 bye s = putStr s >> exitWith ExitSuccess
1044 die :: String -> IO a
1047 dieWith :: Int -> String -> IO a
1050 prog <- getProgramName
1051 hPutStrLn stderr (prog ++ ": " ++ s)
1052 exitWith (ExitFailure ec)
1054 dieOrForceAll :: Force -> String -> IO ()
1055 dieOrForceAll ForceAll s = ignoreError s
1056 dieOrForceAll _other s = dieForcible s
1058 dieOrForceFile :: Force -> String -> IO ()
1059 dieOrForceFile ForceAll s = ignoreError s
1060 dieOrForceFile ForceFiles s = ignoreError s
1061 dieOrForceFile _other s = dieForcible s
1063 ignoreError :: String -> IO ()
1064 ignoreError s = do hFlush stdout; hPutStrLn stderr (s ++ " (ignoring)")
1066 dieForcible :: String -> IO ()
1067 dieForcible s = die (s ++ " (use --force to override)")
1069 my_head :: String -> [a] -> a
1070 my_head s [] = error s
1071 my_head _ (x : _) = x
1073 -----------------------------------------
1074 -- Cut and pasted from ghc/compiler/main/SysTools
1076 #if defined(mingw32_HOST_OS)
1077 subst :: Char -> Char -> String -> String
1078 subst a b ls = map (\ x -> if x == a then b else x) ls
1080 unDosifyPath :: FilePath -> FilePath
1081 unDosifyPath xs = subst '\\' '/' xs
1083 getExecDir :: String -> IO (Maybe String)
1084 -- (getExecDir cmd) returns the directory in which the current
1085 -- executable, which should be called 'cmd', is running
1086 -- So if the full path is /a/b/c/d/e, and you pass "d/e" as cmd,
1087 -- you'll get "/a/b/c" back as the result
1089 = allocaArray len $ \buf -> do
1090 ret <- getModuleFileName nullPtr buf len
1091 if ret == 0 then return Nothing
1092 else do s <- peekCString buf
1093 return (Just (reverse (drop (length cmd)
1094 (reverse (unDosifyPath s)))))
1096 len = 2048::Int -- Plenty, PATH_MAX is 512 under Win32.
1098 foreign import stdcall unsafe "GetModuleFileNameA"
1099 getModuleFileName :: Ptr () -> CString -> Int -> IO Int32
1101 getExecDir :: String -> IO (Maybe String)
1102 getExecDir _ = return Nothing
1105 -----------------------------------------
1106 -- Adapted from ghc/compiler/utils/Panic
1108 installSignalHandlers :: IO ()
1109 installSignalHandlers = do
1110 threadid <- myThreadId
1112 interrupt = throwTo threadid (Exception.ErrorCall "interrupted")
1114 #if !defined(mingw32_HOST_OS)
1115 installHandler sigQUIT (Catch interrupt) Nothing
1116 installHandler sigINT (Catch interrupt) Nothing
1118 #elif __GLASGOW_HASKELL__ >= 603
1119 -- GHC 6.3+ has support for console events on Windows
1120 -- NOTE: running GHCi under a bash shell for some reason requires
1121 -- you to press Ctrl-Break rather than Ctrl-C to provoke
1122 -- an interrupt. Ctrl-C is getting blocked somewhere, I don't know
1123 -- why --SDM 17/12/2004
1124 let sig_handler ControlC = interrupt
1125 sig_handler Break = interrupt
1126 sig_handler _ = return ()
1128 installHandler (Catch sig_handler)
1131 return () -- nothing
1134 #if __GLASGOW_HASKELL__ <= 604
1135 isInfixOf :: (Eq a) => [a] -> [a] -> Bool
1136 isInfixOf needle haystack = any (isPrefixOf needle) (tails haystack)
1139 catchIO :: IO a -> (Exception.IOException -> IO a) -> IO a
1140 #if __GLASGOW_HASKELL__ >= 609
1141 catchIO = Exception.catch
1143 catchIO io handler = io `Exception.catch` handler'
1144 where handler' (Exception.IOException ioe) = handler ioe
1145 handler' e = Exception.throw e
1148 #if mingw32_HOST_OS || mingw32_TARGET_OS
1149 throwIOIO :: Exception.IOException -> IO a
1150 #if __GLASGOW_HASKELL__ >= 609
1151 throwIOIO = Exception.throwIO
1153 throwIOIO ioe = Exception.throwIO (Exception.IOException ioe)
1157 catchError :: IO a -> (String -> IO a) -> IO a
1158 #if __GLASGOW_HASKELL__ >= 609
1159 catchError io handler = io `Exception.catch` handler'
1160 where handler' (Exception.ErrorCall err) = handler err
1162 catchError io handler = io `Exception.catch` handler'
1163 where handler' (Exception.ErrorCall err) = handler err
1164 handler' e = Exception.throw e
1167 onException :: IO a -> IO b -> IO a
1168 #if __GLASGOW_HASKELL__ >= 609
1169 onException = Exception.onException
1171 onException io what = io `Exception.catch` \e -> do what
1176 -- copied from Cabal's Distribution.Simple.Utils, except that we want
1177 -- to use text files here, rather than binary files.
1178 writeFileAtomic :: FilePath -> String -> IO ()
1179 writeFileAtomic targetFile content = do
1180 (newFile, newHandle) <- openNewFile targetDir template
1181 do hPutStr newHandle content
1183 #if mingw32_HOST_OS || mingw32_TARGET_OS
1184 renameFile newFile targetFile
1185 -- If the targetFile exists then renameFile will fail
1186 `catchIO` \err -> do
1187 exists <- doesFileExist targetFile
1189 then do removeFile targetFile
1190 -- Big fat hairy race condition
1191 renameFile newFile targetFile
1192 -- If the removeFile succeeds and the renameFile fails
1193 -- then we've lost the atomic property.
1196 renameFile newFile targetFile
1198 `onException` do hClose newHandle
1201 template = targetName <.> "tmp"
1202 targetDir | null targetDir_ = "."
1203 | otherwise = targetDir_
1204 --TODO: remove this when takeDirectory/splitFileName is fixed
1205 -- to always return a valid dir
1206 (targetDir_,targetName) = splitFileName targetFile
1208 -- Ugh, this is a copy/paste of code from the base library, but
1209 -- if uses 666 rather than 600 for the permissions.
1210 openNewFile :: FilePath -> String -> IO (FilePath, Handle)
1211 openNewFile dir template = do
1215 -- We split off the last extension, so we can use .foo.ext files
1216 -- for temporary files (hidden on Unix OSes). Unfortunately we're
1217 -- below filepath in the hierarchy here.
1219 case break (== '.') $ reverse template of
1220 -- First case: template contains no '.'s. Just re-reverse it.
1221 (rev_suffix, "") -> (reverse rev_suffix, "")
1222 -- Second case: template contains at least one '.'. Strip the
1223 -- dot from the prefix and prepend it to the suffix (if we don't
1224 -- do this, the unique number will get added after the '.' and
1225 -- thus be part of the extension, which is wrong.)
1226 (rev_suffix, '.':rest) -> (reverse rest, '.':reverse rev_suffix)
1227 -- Otherwise, something is wrong, because (break (== '.')) should
1228 -- always return a pair with either the empty string or a string
1229 -- beginning with '.' as the second component.
1230 _ -> error "bug in System.IO.openTempFile"
1232 oflags = rw_flags .|. o_EXCL
1235 fd <- withCString filepath $ \ f ->
1236 c_open f oflags 0o666
1241 then findTempName (x+1)
1242 else ioError (errnoToIOError "openNewBinaryFile" errno Nothing (Just dir))
1244 -- XXX We want to tell fdToHandle what the filepath is,
1245 -- as any exceptions etc will only be able to report the
1247 h <- fdToHandle fd `onException` c_close fd
1248 return (filepath, h)
1250 filename = prefix ++ show x ++ suffix
1251 filepath = dir `combine` filename
1253 -- XXX Copied from GHC.Handle
1254 std_flags, output_flags, rw_flags :: CInt
1255 std_flags = o_NONBLOCK .|. o_NOCTTY
1256 output_flags = std_flags .|. o_CREAT
1257 rw_flags = output_flags .|. o_RDWR
1259 -- | The function splits the given string to substrings
1260 -- using 'isSearchPathSeparator'.
1261 parseSearchPath :: String -> [FilePath]
1262 parseSearchPath path = split path
1264 split :: String -> [String]
1268 _:rest -> chunk : split rest
1272 #ifdef mingw32_HOST_OS
1273 ('\"':xs@(_:_)) | last xs == '\"' -> init xs
1277 (chunk', rest') = break isSearchPathSeparator s