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
38 import Data.Char ( isSpace, toLower )
40 import System.Directory ( doesDirectoryExist, getDirectoryContents,
41 doesFileExist, renameFile, removeFile )
42 import System.Exit ( exitWith, ExitCode(..) )
43 import System.Environment ( getArgs, getProgName, getEnv )
45 import System.IO.Error (try)
46 import Data.List ( isPrefixOf, isSuffixOf, intersperse, sortBy, nub,
48 #if __GLASGOW_HASKELL__ > 604
49 import Data.List ( isInfixOf )
51 import Data.List ( tails )
53 import Control.Concurrent
55 #ifdef mingw32_HOST_OS
57 import Foreign.C.String
58 import GHC.ConsoleHandler
63 import IO ( isPermissionError, isDoesNotExistError )
66 import System.Process(runInteractiveCommand)
67 import qualified System.Info(os)
70 -- -----------------------------------------------------------------------------
77 case getOpt Permute (flags ++ deprecFlags) args of
78 (cli,_,[]) | FlagHelp `elem` cli -> do
79 prog <- getProgramName
80 bye (usageInfo (usageHeader prog) flags)
81 (cli,_,[]) | FlagVersion `elem` cli ->
86 prog <- getProgramName
87 die (concat errors ++ usageInfo (usageHeader prog) flags)
89 -- -----------------------------------------------------------------------------
90 -- Command-line syntax
98 | FlagGlobalConfig FilePath
107 flags :: [OptDescr Flag]
109 Option [] ["user"] (NoArg FlagUser)
110 "use the current user's package database",
111 Option [] ["global"] (NoArg FlagGlobal)
112 "use the global package database",
113 Option ['f'] ["package-conf"] (ReqArg FlagConfig "FILE")
114 "use the specified package config file",
115 Option [] ["global-conf"] (ReqArg FlagGlobalConfig "FILE")
116 "location of the global package config",
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
280 ["expose", pkgid_str] -> do
281 pkgid <- readGlobPkgId pkgid_str
282 exposePackage pkgid cli
283 ["hide", pkgid_str] -> do
284 pkgid <- readGlobPkgId pkgid_str
285 hidePackage pkgid cli
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 PackageDBStack = [(PackageDBName,PackageDB)]
360 -- A stack of package databases. Convention: head is the topmost
361 -- in the stack. Earlier entries override later one.
363 allPackagesInStack :: PackageDBStack -> [InstalledPackageInfo]
364 allPackagesInStack = concatMap snd
366 getPkgDatabases :: Bool -> [Flag] -> IO PackageDBStack
367 getPkgDatabases modify flags = do
368 -- first we determine the location of the global package config. On Windows,
369 -- this is found relative to the ghc-pkg.exe binary, whereas on Unix the
370 -- location is passed to the binary using the --global-config flag by the
372 let err_msg = "missing --global-conf option, location of global package.conf unknown\n"
374 case [ f | FlagGlobalConfig f <- flags ] of
375 [] -> do mb_dir <- getExecDir "/bin/ghc-pkg.exe"
377 Nothing -> die err_msg
378 Just dir -> return (dir </> "package.conf")
379 fs -> return (last fs)
381 let global_conf_dir = global_conf ++ ".d"
382 global_conf_dir_exists <- doesDirectoryExist global_conf_dir
384 if global_conf_dir_exists
385 then do files <- getDirectoryContents global_conf_dir
386 return [ global_conf_dir ++ '/' : file
388 , isSuffixOf ".conf" file]
391 -- get the location of the user package database, and create it if necessary
392 appdir <- getAppUserDataDirectory "ghc"
395 subdir = targetARCH ++ '-':targetOS ++ '-':Version.version
396 archdir = appdir </> subdir
397 user_conf = archdir </> "package.conf"
398 user_exists <- doesFileExist user_conf
400 -- If the user database doesn't exist, and this command isn't a
401 -- "modify" command, then we won't attempt to create or use it.
403 | modify || user_exists = user_conf : global_confs ++ [global_conf]
404 | otherwise = global_confs ++ [global_conf]
406 e_pkg_path <- try (System.Environment.getEnv "GHC_PACKAGE_PATH")
409 Left _ -> sys_databases
411 | last cs == "" -> init cs ++ sys_databases
413 where cs = splitSearchPath path
415 -- The "global" database is always the one at the bottom of the stack.
416 -- This is the database we modify by default.
417 virt_global_conf = last env_stack
419 let db_flags = [ f | Just f <- map is_db_flag flags ]
420 where is_db_flag FlagUser = Just user_conf
421 is_db_flag FlagGlobal = Just virt_global_conf
422 is_db_flag (FlagConfig f) = Just f
423 is_db_flag _ = Nothing
427 then -- For a "read" command, we use all the databases
428 -- specified on the command line. If there are no
429 -- command-line flags specifying databases, the default
430 -- is to use all the ones we know about.
431 if null db_flags then return env_stack
432 else return (reverse (nub db_flags))
434 -- For a "modify" command, treat all the databases as
435 -- a stack, where we are modifying the top one, but it
436 -- can refer to packages in databases further down the
439 -- -f flags on the command line add to the database
440 -- stack, unless any of them are present in the stack
442 flag_stack = filter (`notElem` env_stack)
443 [ f | FlagConfig f <- reverse flags ]
447 | f `elem` flag_stack = return (dropWhile (/= f) flag_stack)
448 | otherwise = die ("requesting modification of database:\n\t" ++ f ++ "\n\twhich is not in the database stack.")
451 then modifying virt_global_conf
452 else modifying (head db_flags)
454 db_stack <- mapM readParseDatabase final_stack
457 readParseDatabase :: PackageDBName -> IO (PackageDBName,PackageDB)
458 readParseDatabase filename = do
459 str <- readFile filename `Exception.catch` \_ -> return emptyPackageConfig
460 let packages = map convertPackageInfoIn $ read str
461 Exception.evaluate packages
462 `Exception.catch` \e->
463 die ("error while parsing " ++ filename ++ ": " ++ show e)
464 return (filename,packages)
466 emptyPackageConfig :: String
467 emptyPackageConfig = "[]"
469 -- -----------------------------------------------------------------------------
472 registerPackage :: FilePath
474 -> Bool -- auto_ghci_libs
478 registerPackage input flags auto_ghci_libs update force = do
479 db_stack <- getPkgDatabases True flags
481 db_to_operate_on = my_head "db" db_stack
482 db_filename = fst db_to_operate_on
488 putStr "Reading package info from stdin ... "
491 putStr ("Reading package info from " ++ show f ++ " ... ")
494 expanded <- expandEnvVars s force
496 pkg <- parsePackageInfo expanded
499 validatePackageConfig pkg db_stack auto_ghci_libs update force
500 let new_details = filter not_this (snd db_to_operate_on) ++ [pkg]
501 not_this p = package p /= package pkg
502 savingOldConfig db_filename $
503 writeNewConfig db_filename new_details
507 -> IO InstalledPackageInfo
508 parsePackageInfo str =
509 case parseInstalledPackageInfo str of
510 ParseOk _warns ok -> return ok
511 ParseFailed err -> case locatedErrorMsg err of
512 (Nothing, s) -> die s
513 (Just l, s) -> die (show l ++ ": " ++ s)
515 -- -----------------------------------------------------------------------------
516 -- Exposing, Hiding, Unregistering are all similar
518 exposePackage :: PackageIdentifier -> [Flag] -> IO ()
519 exposePackage = modifyPackage (\p -> [p{exposed=True}])
521 hidePackage :: PackageIdentifier -> [Flag] -> IO ()
522 hidePackage = modifyPackage (\p -> [p{exposed=False}])
524 unregisterPackage :: PackageIdentifier -> [Flag] -> IO ()
525 unregisterPackage = modifyPackage (\p -> [])
528 :: (InstalledPackageInfo -> [InstalledPackageInfo])
532 modifyPackage fn pkgid flags = do
533 db_stack <- getPkgDatabases True{-modify-} flags
534 let ((db_name, pkgs) : _) = db_stack
535 ps <- findPackages [(db_name,pkgs)] (Id pkgid)
536 let pids = map package ps
537 let new_config = concat (map modify pkgs)
539 | package pkg `elem` pids = fn pkg
541 savingOldConfig db_name $
542 writeNewConfig db_name new_config
544 -- -----------------------------------------------------------------------------
547 listPackages :: [Flag] -> Maybe PackageArg -> Maybe (String->Bool) -> IO ()
548 listPackages flags mPackageName mModuleName = do
549 let simple_output = FlagSimpleOutput `elem` flags
550 db_stack <- getPkgDatabases False flags
551 let db_stack_filtered -- if a package is given, filter out all other packages
552 | Just this <- mPackageName =
553 map (\(conf,pkgs) -> (conf, filter (this `matchesPkg`) pkgs))
555 | Just match <- mModuleName = -- packages which expose mModuleName
556 map (\(conf,pkgs) -> (conf, filter (match `exposedInPkg`) pkgs))
558 | otherwise = db_stack
561 = [ (db, sort_pkgs pkgs) | (db,pkgs) <- db_stack_filtered ]
562 where sort_pkgs = sortBy cmpPkgIds
563 cmpPkgIds pkg1 pkg2 =
564 case pkgName p1 `compare` pkgName p2 of
567 EQ -> pkgVersion p1 `compare` pkgVersion p2
568 where (p1,p2) = (package pkg1, package pkg2)
570 match `exposedInPkg` pkg = any match (map display $ exposedModules pkg)
572 pkg_map = map (\p -> (package p, p)) $ allPackagesInStack db_stack
573 show_func = if simple_output then show_simple else mapM_ (show_normal pkg_map)
575 show_func (reverse db_stack_sorted)
577 where show_normal pkg_map (db_name,pkg_confs) =
578 hPutStrLn stdout (render $
579 text db_name <> colon $$ nest 4 packages
581 where packages = fsep (punctuate comma (map pp_pkg pkg_confs))
583 | isBrokenPackage p pkg_map = braces doc
585 | otherwise = parens doc
586 where doc = text (display (package p))
588 show_simple db_stack = do
589 let showPkg = if FlagNamesOnly `elem` flags then display . pkgName
591 pkgs = map showPkg $ sortBy compPkgIdVer $
592 map package (allPackagesInStack db_stack)
593 when (not (null pkgs)) $
594 hPutStrLn stdout $ concat $ intersperse " " pkgs
596 -- -----------------------------------------------------------------------------
597 -- Prints the highest (hidden or exposed) version of a package
599 latestPackage :: [Flag] -> PackageIdentifier -> IO ()
600 latestPackage flags pkgid = do
601 db_stack <- getPkgDatabases False flags
602 ps <- findPackages db_stack (Id pkgid)
603 show_pkg (sortBy compPkgIdVer (map package ps))
605 show_pkg [] = die "no matches"
606 show_pkg pids = hPutStrLn stdout (display (last pids))
608 -- -----------------------------------------------------------------------------
611 describePackage :: [Flag] -> PackageArg -> IO ()
612 describePackage flags pkgarg = do
613 db_stack <- getPkgDatabases False flags
614 ps <- findPackages db_stack pkgarg
617 dumpPackages :: [Flag] -> IO ()
618 dumpPackages flags = do
619 db_stack <- getPkgDatabases False flags
620 doDump (allPackagesInStack db_stack)
622 doDump :: [InstalledPackageInfo] -> IO ()
623 doDump = mapM_ putStrLn . intersperse "---" . map showInstalledPackageInfo
625 -- PackageId is can have globVersion for the version
626 findPackages :: PackageDBStack -> PackageArg -> IO [InstalledPackageInfo]
627 findPackages db_stack pkgarg
628 = case [ p | p <- all_pkgs, pkgarg `matchesPkg` p ] of
629 [] -> die ("cannot find package " ++ pkg_msg pkgarg)
632 all_pkgs = allPackagesInStack db_stack
633 pkg_msg (Id pkgid) = display pkgid
634 pkg_msg (Substring pkgpat _) = "matching "++pkgpat
636 matches :: PackageIdentifier -> PackageIdentifier -> Bool
638 = (pkgName pid == pkgName pid')
639 && (pkgVersion pid == pkgVersion pid' || not (realVersion pid))
641 matchesPkg :: PackageArg -> InstalledPackageInfo -> Bool
642 (Id pid) `matchesPkg` pkg = pid `matches` package pkg
643 (Substring _ m) `matchesPkg` pkg = m (display (package pkg))
645 compPkgIdVer :: PackageIdentifier -> PackageIdentifier -> Ordering
646 compPkgIdVer p1 p2 = pkgVersion p1 `compare` pkgVersion p2
648 -- -----------------------------------------------------------------------------
651 describeField :: [Flag] -> PackageArg -> [String] -> IO ()
652 describeField flags pkgarg fields = do
653 db_stack <- getPkgDatabases False flags
654 fns <- toFields fields
655 ps <- findPackages db_stack pkgarg
656 let top_dir = takeDirectory (fst (last db_stack))
657 mapM_ (selectFields fns) (mungePackagePaths top_dir ps)
658 where toFields [] = return []
659 toFields (f:fs) = case toField f of
660 Nothing -> die ("unknown field: " ++ f)
661 Just fn -> do fns <- toFields fs
663 selectFields fns info = mapM_ (\fn->putStrLn (fn info)) fns
665 mungePackagePaths :: String -> [InstalledPackageInfo] -> [InstalledPackageInfo]
666 -- Replace the strings "$topdir" and "$httptopdir" at the beginning of a path
667 -- with the current topdir (obtained from the -B option).
668 mungePackagePaths top_dir ps = map munge_pkg ps
670 munge_pkg p = p{ importDirs = munge_paths (importDirs p),
671 includeDirs = munge_paths (includeDirs p),
672 libraryDirs = munge_paths (libraryDirs p),
673 frameworkDirs = munge_paths (frameworkDirs p),
674 haddockInterfaces = munge_paths (haddockInterfaces p),
675 haddockHTMLs = munge_paths (haddockHTMLs p)
678 munge_paths = map munge_path
681 | Just p' <- maybePrefixMatch "$topdir" p = top_dir ++ p'
682 | Just p' <- maybePrefixMatch "$httptopdir" p = toHttpPath top_dir ++ p'
685 toHttpPath p = "file:///" ++ p
687 maybePrefixMatch :: String -> String -> Maybe String
688 maybePrefixMatch [] rest = Just rest
689 maybePrefixMatch (_:_) [] = Nothing
690 maybePrefixMatch (p:pat) (r:rest)
691 | p == r = maybePrefixMatch pat rest
692 | otherwise = Nothing
694 toField :: String -> Maybe (InstalledPackageInfo -> String)
695 -- backwards compatibility:
696 toField "import_dirs" = Just $ strList . importDirs
697 toField "source_dirs" = Just $ strList . importDirs
698 toField "library_dirs" = Just $ strList . libraryDirs
699 toField "hs_libraries" = Just $ strList . hsLibraries
700 toField "extra_libraries" = Just $ strList . extraLibraries
701 toField "include_dirs" = Just $ strList . includeDirs
702 toField "c_includes" = Just $ strList . includes
703 toField "package_deps" = Just $ strList . map display. depends
704 toField "extra_cc_opts" = Just $ strList . ccOptions
705 toField "extra_ld_opts" = Just $ strList . ldOptions
706 toField "framework_dirs" = Just $ strList . frameworkDirs
707 toField "extra_frameworks"= Just $ strList . frameworks
708 toField s = showInstalledPackageInfoField s
710 strList :: [String] -> String
714 -- -----------------------------------------------------------------------------
715 -- Check: Check consistency of installed packages
717 checkConsistency :: [Flag] -> IO ()
718 checkConsistency flags = do
719 db_stack <- getPkgDatabases True flags
720 -- check behaves like modify for the purposes of deciding which
721 -- databases to use, because ordering is important.
722 let pkgs = map (\p -> (package p, p)) $ allPackagesInStack db_stack
725 let broken_deps = missingPackageDeps p pkgs
726 guard (not . null $ broken_deps)
727 return (pid, broken_deps)
728 mapM_ (putStrLn . render . show_func) broken_pkgs
730 show_func | FlagSimpleOutput `elem` flags = show_simple
731 | otherwise = show_normal
732 show_simple (pid,deps) =
733 text (display pid) <> colon
734 <+> fsep (punctuate comma (map (text . display) deps))
735 show_normal (pid,deps) =
736 text "package" <+> text (display pid) <+> text "has missing dependencies:"
737 $$ nest 4 (fsep (punctuate comma (map (text . display) deps)))
739 missingPackageDeps :: InstalledPackageInfo
740 -> [(PackageIdentifier, InstalledPackageInfo)]
741 -> [PackageIdentifier]
742 missingPackageDeps pkg pkg_map =
743 [ d | d <- depends pkg, isNothing (lookup d pkg_map)] ++
744 [ d | d <- depends pkg, Just p <- return (lookup d pkg_map),
745 isBrokenPackage p pkg_map]
747 isBrokenPackage :: InstalledPackageInfo -> [(PackageIdentifier, InstalledPackageInfo)] -> Bool
748 isBrokenPackage pkg pkg_map
749 = not . null $ missingPackageDeps pkg (filter notme pkg_map)
750 where notme (p,ipi) = package pkg /= p
751 -- remove p from the database when we invoke missingPackageDeps,
752 -- because we want mutually recursive groups of package to show up
753 -- as broken. (#1750)
755 -- -----------------------------------------------------------------------------
756 -- Manipulating package.conf files
758 type InstalledPackageInfoString = InstalledPackageInfo_ String
760 convertPackageInfoOut :: InstalledPackageInfo -> InstalledPackageInfoString
761 convertPackageInfoOut
762 (pkgconf@(InstalledPackageInfo { exposedModules = e,
763 hiddenModules = h })) =
764 pkgconf{ exposedModules = map display e,
765 hiddenModules = map display h }
767 convertPackageInfoIn :: InstalledPackageInfoString -> InstalledPackageInfo
769 (pkgconf@(InstalledPackageInfo { exposedModules = e,
770 hiddenModules = h })) =
771 pkgconf{ exposedModules = map convert e,
772 hiddenModules = map convert h }
773 where convert = fromJust . simpleParse
775 writeNewConfig :: FilePath -> [InstalledPackageInfo] -> IO ()
776 writeNewConfig filename packages = do
777 hPutStr stdout "Writing new package config file... "
778 createDirectoryIfMissing True $ takeDirectory filename
779 h <- openFile filename WriteMode `catch` \e ->
780 if isPermissionError e
781 then die (filename ++ ": you don't have permission to modify this file")
783 let shown = concat $ intersperse ",\n "
784 $ map (show . convertPackageInfoOut) packages
785 fileContents = "[" ++ shown ++ "\n]"
786 hPutStrLn h fileContents
788 hPutStrLn stdout "done."
790 savingOldConfig :: FilePath -> IO () -> IO ()
791 savingOldConfig filename io = Exception.block $ do
792 hPutStr stdout "Saving old package config file... "
793 -- mv rather than cp because we've already done an hGetContents
794 -- on this file so we won't be able to open it for writing
795 -- unless we move the old one out of the way...
796 let oldFile = filename ++ ".old"
797 restore_on_error <- catch (renameFile filename oldFile >> return True) $
799 unless (isDoesNotExistError err) $ do
800 hPutStrLn stderr (unwords ["Unable to rename", show filename,
804 (do hPutStrLn stdout "done."; io)
805 `Exception.catch` \e -> do
806 hPutStr stdout ("WARNING: an error was encountered while writing "
807 ++ "the new configuration.\n")
808 -- remove any partially complete new version:
809 try (removeFile filename)
810 -- and attempt to restore the old one, if we had one:
811 when restore_on_error $ do
812 hPutStr stdout "Attempting to restore the old configuration... "
813 do renameFile oldFile filename
814 hPutStrLn stdout "done."
815 `catch` \err -> hPutStrLn stdout ("Failed: " ++ show err)
816 -- Note the above renameFile sometimes fails on Windows with
817 -- "permission denied", I have no idea why --SDM.
820 -----------------------------------------------------------------------------
821 -- Sanity-check a new package config, and automatically build GHCi libs
824 validatePackageConfig :: InstalledPackageInfo
826 -> Bool -- auto-ghc-libs
830 validatePackageConfig pkg db_stack auto_ghci_libs update force = do
832 checkDuplicates db_stack pkg update force
833 mapM_ (checkDep db_stack force) (depends pkg)
834 mapM_ (checkDir force) (importDirs pkg)
835 mapM_ (checkDir force) (libraryDirs pkg)
836 mapM_ (checkDir force) (includeDirs pkg)
837 mapM_ (checkHSLib (libraryDirs pkg) auto_ghci_libs force) (hsLibraries pkg)
838 -- ToDo: check these somehow?
839 -- extra_libraries :: [String],
840 -- c_includes :: [String],
842 -- When the package name and version are put together, sometimes we can
843 -- end up with a package id that cannot be parsed. This will lead to
844 -- difficulties when the user wants to refer to the package later, so
845 -- we check that the package id can be parsed properly here.
846 checkPackageId :: InstalledPackageInfo -> IO ()
848 let str = display (package ipi) in
849 case [ x :: PackageIdentifier | (x,ys) <- readP_to_S parse str, all isSpace ys ] of
851 [] -> die ("invalid package identifier: " ++ str)
852 _ -> die ("ambiguous package identifier: " ++ str)
854 checkDuplicates :: PackageDBStack -> InstalledPackageInfo -> Bool -> Force -> IO ()
855 checkDuplicates db_stack pkg update force = do
858 (_top_db_name, pkgs) : _ = db_stack
860 -- Check whether this package id already exists in this DB
862 when (not update && (pkgid `elem` map package pkgs)) $
863 die ("package " ++ display pkgid ++ " is already installed")
866 uncasep = map toLower . display
867 dups = filter ((== uncasep pkgid) . uncasep) (map package pkgs)
869 when (not update && not (null dups)) $ dieOrForceAll force $
870 "Package names may be treated case-insensitively in the future.\n"++
871 "Package " ++ display pkgid ++
872 " overlaps with: " ++ unwords (map display dups)
875 checkDir :: Force -> String -> IO ()
877 | "$topdir" `isPrefixOf` d = return ()
878 | "$httptopdir" `isPrefixOf` d = return ()
879 -- can't check these, because we don't know what $(http)topdir is
881 there <- doesDirectoryExist d
883 (dieOrForceFile force (d ++ " doesn't exist or isn't a directory"))
885 checkDep :: PackageDBStack -> Force -> PackageIdentifier -> IO ()
886 checkDep db_stack force pkgid
887 | pkgid `elem` pkgids || (not real_version && name_exists) = return ()
888 | otherwise = dieOrForceAll force ("dependency " ++ display pkgid
891 -- for backwards compat, we treat 0.0 as a special version,
892 -- and don't check that it actually exists.
893 real_version = realVersion pkgid
895 name_exists = any (\p -> pkgName (package p) == name) all_pkgs
898 all_pkgs = allPackagesInStack db_stack
899 pkgids = map package all_pkgs
901 realVersion :: PackageIdentifier -> Bool
902 realVersion pkgid = versionBranch (pkgVersion pkgid) /= []
904 checkHSLib :: [String] -> Bool -> Force -> String -> IO ()
905 checkHSLib dirs auto_ghci_libs force lib = do
906 let batch_lib_file = "lib" ++ lib ++ ".a"
907 bs <- mapM (doesLibExistIn batch_lib_file) dirs
908 case [ dir | (exists,dir) <- zip bs dirs, exists ] of
909 [] -> dieOrForceFile force ("cannot find " ++ batch_lib_file ++
911 (dir:_) -> checkGHCiLib dirs dir batch_lib_file lib auto_ghci_libs
913 doesLibExistIn :: String -> String -> IO Bool
915 | "$topdir" `isPrefixOf` d = return True
916 | "$httptopdir" `isPrefixOf` d = return True
917 | otherwise = doesFileExist (d ++ '/':lib)
919 checkGHCiLib :: [String] -> String -> String -> String -> Bool -> IO ()
920 checkGHCiLib dirs batch_lib_dir batch_lib_file lib auto_build
921 | auto_build = autoBuildGHCiLib batch_lib_dir batch_lib_file ghci_lib_file
923 bs <- mapM (doesLibExistIn ghci_lib_file) dirs
924 case [dir | (exists,dir) <- zip bs dirs, exists] of
925 [] -> hPutStrLn stderr ("warning: can't find GHCi lib " ++ ghci_lib_file)
928 ghci_lib_file = lib ++ ".o"
930 -- automatically build the GHCi version of a batch lib,
931 -- using ld --whole-archive.
933 autoBuildGHCiLib :: String -> String -> String -> IO ()
934 autoBuildGHCiLib dir batch_file ghci_file = do
935 let ghci_lib_file = dir ++ '/':ghci_file
936 batch_lib_file = dir ++ '/':batch_file
937 hPutStr stderr ("building GHCi library " ++ ghci_lib_file ++ "...")
938 #if defined(darwin_HOST_OS)
939 r <- rawSystem "ld" ["-r","-x","-o",ghci_lib_file,"-all_load",batch_lib_file]
940 #elif defined(mingw32_HOST_OS)
941 execDir <- getExecDir "/bin/ghc-pkg.exe"
942 r <- rawSystem (maybe "" (++"/gcc-lib/") execDir++"ld") ["-r","-x","-o",ghci_lib_file,"--whole-archive",batch_lib_file]
944 r <- rawSystem "ld" ["-r","-x","-o",ghci_lib_file,"--whole-archive",batch_lib_file]
946 when (r /= ExitSuccess) $ exitWith r
947 hPutStrLn stderr (" done.")
949 -- -----------------------------------------------------------------------------
950 -- Searching for modules
954 findModules :: [FilePath] -> IO [String]
956 mms <- mapM searchDir paths
959 searchDir path prefix = do
960 fs <- getDirectoryEntries path `catch` \_ -> return []
961 searchEntries path prefix fs
963 searchEntries path prefix [] = return []
964 searchEntries path prefix (f:fs)
965 | looks_like_a_module = do
966 ms <- searchEntries path prefix fs
967 return (prefix `joinModule` f : ms)
968 | looks_like_a_component = do
969 ms <- searchDir (path </> f) (prefix `joinModule` f)
970 ms' <- searchEntries path prefix fs
973 searchEntries path prefix fs
976 (base,suffix) = splitFileExt f
977 looks_like_a_module =
978 suffix `elem` haskell_suffixes &&
979 all okInModuleName base
980 looks_like_a_component =
981 null suffix && all okInModuleName base
987 -- ---------------------------------------------------------------------------
988 -- expanding environment variables in the package configuration
990 expandEnvVars :: String -> Force -> IO String
991 expandEnvVars str force = go str ""
993 go "" acc = return $! reverse acc
994 go ('$':'{':str) acc | (var, '}':rest) <- break close str
995 = do value <- lookupEnvVar var
996 go rest (reverse value ++ acc)
997 where close c = c == '}' || c == '\n' -- don't span newlines
1001 lookupEnvVar :: String -> IO String
1003 catch (System.Environment.getEnv nm)
1004 (\ _ -> do dieOrForceAll force ("Unable to expand variable " ++
1008 -----------------------------------------------------------------------------
1010 getProgramName :: IO String
1011 getProgramName = liftM (`withoutSuffix` ".bin") getProgName
1012 where str `withoutSuffix` suff
1013 | suff `isSuffixOf` str = take (length str - length suff) str
1016 bye :: String -> IO a
1017 bye s = putStr s >> exitWith ExitSuccess
1019 die :: String -> IO a
1022 prog <- getProgramName
1023 hPutStrLn stderr (prog ++ ": " ++ s)
1024 exitWith (ExitFailure 1)
1026 dieOrForceAll :: Force -> String -> IO ()
1027 dieOrForceAll ForceAll s = ignoreError s
1028 dieOrForceAll _other s = dieForcible s
1030 dieOrForceFile :: Force -> String -> IO ()
1031 dieOrForceFile ForceAll s = ignoreError s
1032 dieOrForceFile ForceFiles s = ignoreError s
1033 dieOrForceFile _other s = dieForcible s
1035 ignoreError :: String -> IO ()
1036 ignoreError s = do hFlush stdout; hPutStrLn stderr (s ++ " (ignoring)")
1038 dieForcible :: String -> IO ()
1039 dieForcible s = die (s ++ " (use --force to override)")
1041 my_head :: String -> [a] -> a
1042 my_head s [] = error s
1043 my_head s (x:xs) = x
1045 -----------------------------------------
1046 -- Cut and pasted from ghc/compiler/main/SysTools
1048 #if defined(mingw32_HOST_OS)
1049 subst :: Char -> Char -> String -> String
1050 subst a b ls = map (\ x -> if x == a then b else x) ls
1052 unDosifyPath :: FilePath -> FilePath
1053 unDosifyPath xs = subst '\\' '/' xs
1055 getExecDir :: String -> IO (Maybe String)
1056 -- (getExecDir cmd) returns the directory in which the current
1057 -- executable, which should be called 'cmd', is running
1058 -- So if the full path is /a/b/c/d/e, and you pass "d/e" as cmd,
1059 -- you'll get "/a/b/c" back as the result
1061 = allocaArray len $ \buf -> do
1062 ret <- getModuleFileName nullPtr buf len
1063 if ret == 0 then return Nothing
1064 else do s <- peekCString buf
1065 return (Just (reverse (drop (length cmd)
1066 (reverse (unDosifyPath s)))))
1068 len = 2048::Int -- Plenty, PATH_MAX is 512 under Win32.
1070 foreign import stdcall unsafe "GetModuleFileNameA"
1071 getModuleFileName :: Ptr () -> CString -> Int -> IO Int32
1073 getExecDir :: String -> IO (Maybe String)
1074 getExecDir _ = return Nothing
1077 -----------------------------------------
1078 -- Adapted from ghc/compiler/utils/Panic
1080 installSignalHandlers :: IO ()
1081 installSignalHandlers = do
1082 threadid <- myThreadId
1084 interrupt = throwTo threadid (Exception.ErrorCall "interrupted")
1086 #if !defined(mingw32_HOST_OS)
1087 installHandler sigQUIT (Catch interrupt) Nothing
1088 installHandler sigINT (Catch interrupt) Nothing
1090 #elif __GLASGOW_HASKELL__ >= 603
1091 -- GHC 6.3+ has support for console events on Windows
1092 -- NOTE: running GHCi under a bash shell for some reason requires
1093 -- you to press Ctrl-Break rather than Ctrl-C to provoke
1094 -- an interrupt. Ctrl-C is getting blocked somewhere, I don't know
1095 -- why --SDM 17/12/2004
1096 let sig_handler ControlC = interrupt
1097 sig_handler Break = interrupt
1098 sig_handler _ = return ()
1100 installHandler (Catch sig_handler)
1103 return () -- nothing
1106 #if __GLASGOW_HASKELL__ <= 604
1107 isInfixOf :: (Eq a) => [a] -> [a] -> Bool
1108 isInfixOf needle haystack = any (isPrefixOf needle) (tails haystack)