2 % (c) The University of Glasgow, 2006
10 -- * The PackageConfigMap
11 PackageConfigMap, emptyPackageConfigMap, lookupPackage,
12 extendPackageConfigMap, dumpPackages,
14 -- * Reading the package config, and processing cmdline args
18 lookupModuleInAllPackages,
20 -- * Inspecting the set of packages in scope
21 getPackageIncludePath,
22 getPackageLibraryPath,
24 getPackageExtraCcOpts,
25 getPackageFrameworkPath,
27 getPreloadPackagesAnd,
29 collectIncludeDirs, collectLibraryPaths, collectLinkOpts,
36 #include "HsVersions.h"
39 import ParsePkgConf ( loadPackageConfig )
40 import DynFlags ( dopt, DynFlag(..), DynFlags(..), PackageFlag(..) )
41 import StaticFlags ( opt_Static )
42 import Config ( cProjectVersion )
43 import Name ( Name, nameModule_maybe )
47 import Maybes ( expectJust, MaybeErr(..) )
51 import System.Environment ( getEnv )
52 import Distribution.InstalledPackageInfo hiding (depends)
53 import Distribution.Package hiding (depends)
54 import Distribution.Text
55 import Distribution.Version
57 import ErrUtils ( debugTraceMsg, putMsg, Message )
59 import System.Directory
60 import System.FilePath
65 -- ---------------------------------------------------------------------------
68 -- Package state is all stored in DynFlags, including the details of
69 -- all packages, which packages are exposed, and which modules they
72 -- The package state is computed by initPackages, and kept in DynFlags.
74 -- * -package <pkg> causes <pkg> to become exposed, and all other packages
75 -- with the same name to become hidden.
77 -- * -hide-package <pkg> causes <pkg> to become hidden.
79 -- * Let exposedPackages be the set of packages thus exposed.
80 -- Let depExposedPackages be the transitive closure from exposedPackages of
81 -- their dependencies.
83 -- * When searching for a module from an preload import declaration,
84 -- only the exposed modules in exposedPackages are valid.
86 -- * When searching for a module from an implicit import, all modules
87 -- from depExposedPackages are valid.
89 -- * When linking in a comp manager mode, we link in packages the
90 -- program depends on (the compiler knows this list by the
91 -- time it gets to the link step). Also, we link in all packages
92 -- which were mentioned with preload -package flags on the command-line,
93 -- or are a transitive dependency of same, or are "base"/"rts".
94 -- The reason for (b) is that we might need packages which don't
95 -- contain any Haskell modules, and therefore won't be discovered
96 -- by the normal mechanism of dependency tracking.
100 -- When compiling module A, which imports module B, we need to
101 -- know whether B will be in the same DLL as A.
102 -- If it's in the same DLL, we refer to B_f_closure
103 -- If it isn't, we refer to _imp__B_f_closure
104 -- When compiling A, we record in B's Module value whether it's
105 -- in a different DLL, by setting the DLL flag.
107 data PackageState = PackageState {
108 pkgIdMap :: PackageConfigMap, -- PackageId -> PackageConfig
109 -- The exposed flags are adjusted according to -package and
110 -- -hide-package flags, and -ignore-package removes packages.
112 preloadPackages :: [PackageId],
113 -- The packages we're going to link in eagerly. This list
114 -- should be in reverse dependency order; that is, a package
115 -- is always mentioned before the packages it depends on.
117 moduleToPkgConfAll :: UniqFM [(PackageConfig,Bool)] -- ModuleEnv mapping
118 -- Derived from pkgIdMap.
119 -- Maps Module to (pkgconf,exposed), where pkgconf is the
120 -- PackageConfig for the package containing the module, and
121 -- exposed is True if the package exposes that module.
124 -- A PackageConfigMap maps a PackageId to a PackageConfig
125 type PackageConfigMap = UniqFM PackageConfig
127 emptyPackageConfigMap :: PackageConfigMap
128 emptyPackageConfigMap = emptyUFM
130 lookupPackage :: PackageConfigMap -> PackageId -> Maybe PackageConfig
131 lookupPackage = lookupUFM
133 extendPackageConfigMap
134 :: PackageConfigMap -> [PackageConfig] -> PackageConfigMap
135 extendPackageConfigMap pkg_map new_pkgs
136 = foldl add pkg_map new_pkgs
137 where add pkg_map p = addToUFM pkg_map (packageConfigId p) p
139 getPackageDetails :: PackageState -> PackageId -> PackageConfig
140 getPackageDetails ps pid = expectJust "getPackageDetails" (lookupPackage (pkgIdMap ps) pid)
142 -- ----------------------------------------------------------------------------
143 -- Loading the package config files and building up the package state
145 -- | Call this after 'DynFlags.parseDynFlags'. It reads the package
146 -- configuration files, and sets up various internal tables of package
147 -- information, according to the package-related flags on the
148 -- command-line (@-package@, @-hide-package@ etc.)
150 -- Returns a list of packages to link in if we're doing dynamic linking.
151 -- This list contains the packages that the user explicitly mentioned with
154 -- 'initPackages' can be called again subsequently after updating the
155 -- 'packageFlags' field of the 'DynFlags', and it will update the
156 -- 'packageState' in 'DynFlags' and return a list of packages to
158 initPackages :: DynFlags -> IO (DynFlags, [PackageId])
159 initPackages dflags = do
160 pkg_db <- case pkgDatabase dflags of
161 Nothing -> readPackageConfigs dflags
163 (pkg_state, preload, this_pkg)
164 <- mkPackageState dflags pkg_db [] (thisPackage dflags)
165 return (dflags{ pkgDatabase = Just pkg_db,
166 pkgState = pkg_state,
167 thisPackage = this_pkg },
170 -- -----------------------------------------------------------------------------
171 -- Reading the package database(s)
173 readPackageConfigs :: DynFlags -> IO PackageConfigMap
174 readPackageConfigs dflags = do
175 e_pkg_path <- try (getEnv "GHC_PACKAGE_PATH")
176 system_pkgconfs <- getSystemPackageConfigs dflags
178 let pkgconfs = case e_pkg_path of
179 Left _ -> system_pkgconfs
181 | last cs == "" -> init cs ++ system_pkgconfs
183 where cs = parseSearchPath path
184 -- if the path ends in a separator (eg. "/foo/bar:")
185 -- the we tack on the system paths.
187 -- Read all the ones mentioned in -package-conf flags
188 pkg_map <- foldM (readPackageConfig dflags) emptyPackageConfigMap
189 (reverse pkgconfs ++ extraPkgConfs dflags)
194 getSystemPackageConfigs :: DynFlags -> IO [FilePath]
195 getSystemPackageConfigs dflags = do
196 -- System one always comes first
197 let system_pkgconf = systemPackageConfig dflags
199 -- allow package.conf.d to contain a bunch of .conf files
200 -- containing package specifications. This is an easier way
201 -- to maintain the package database on systems with a package
202 -- management system, or systems that don't want to run ghc-pkg
203 -- to register or unregister packages. Undocumented feature for now.
204 let system_pkgconf_dir = system_pkgconf <.> "d"
205 system_pkgconf_dir_exists <- doesDirectoryExist system_pkgconf_dir
207 if system_pkgconf_dir_exists
208 then do files <- getDirectoryContents system_pkgconf_dir
209 return [ system_pkgconf_dir </> file
211 , takeExtension file == ".conf" ]
214 -- Read user's package conf (eg. ~/.ghc/i386-linux-6.3/package.conf)
215 -- unless the -no-user-package-conf flag was given.
216 -- We only do this when getAppUserDataDirectory is available
218 user_pkgconf <- handle (\_ -> return []) $ do
219 appdir <- getAppUserDataDirectory "ghc"
222 </> (TARGET_ARCH ++ '-':TARGET_OS ++ '-':cProjectVersion)
224 flg <- doesFileExist pkgconf
225 if (flg && dopt Opt_ReadUserPackageConf dflags)
226 then return [pkgconf]
229 return (user_pkgconf ++ system_pkgconfs ++ [system_pkgconf])
233 :: DynFlags -> PackageConfigMap -> FilePath -> IO PackageConfigMap
234 readPackageConfig dflags pkg_map conf_file = do
235 debugTraceMsg dflags 2 (text "Using package config file:" <+> text conf_file)
236 proto_pkg_configs <- loadPackageConfig dflags conf_file
237 let top_dir = topDir dflags
238 pkg_configs1 = mungePackagePaths top_dir proto_pkg_configs
239 pkg_configs2 = maybeHidePackages dflags pkg_configs1
240 return (extendPackageConfigMap pkg_map pkg_configs2)
242 maybeHidePackages :: DynFlags -> [PackageConfig] -> [PackageConfig]
243 maybeHidePackages dflags pkgs
244 | dopt Opt_HideAllPackages dflags = map hide pkgs
247 hide pkg = pkg{ exposed = False }
249 mungePackagePaths :: String -> [PackageConfig] -> [PackageConfig]
250 -- Replace the string "$topdir" at the beginning of a path
251 -- with the current topdir (obtained from the -B option).
252 mungePackagePaths top_dir ps = map munge_pkg ps
254 munge_pkg p = p{ importDirs = munge_paths (importDirs p),
255 includeDirs = munge_paths (includeDirs p),
256 libraryDirs = munge_paths (libraryDirs p),
257 frameworkDirs = munge_paths (frameworkDirs p),
258 haddockInterfaces = munge_paths (haddockInterfaces p),
259 haddockHTMLs = munge_paths (haddockHTMLs p)
262 munge_paths = map munge_path
265 | Just p' <- maybePrefixMatch "$topdir" p = top_dir ++ p'
266 | Just p' <- maybePrefixMatch "$httptopdir" p = toHttpPath top_dir ++ p'
269 toHttpPath p = "file:///" ++ p
272 -- -----------------------------------------------------------------------------
273 -- Modify our copy of the package database based on a package flag
274 -- (-package, -hide-package, -ignore-package).
277 :: [PackageConfig] -- Initial database
278 -> PackageFlag -- flag to apply
279 -> IO [PackageConfig] -- new database
281 applyPackageFlag pkgs flag =
284 case matchingPackages str pkgs of
285 Nothing -> missingPackageErr str
286 Just ([], _) -> panic "applyPackageFlag"
287 Just (p:ps,qs) -> return (p':ps')
288 where p' = p {exposed=True}
289 ps' = hideAll (pkgName (package p)) (ps++qs)
292 case matchingPackages str pkgs of
293 Nothing -> missingPackageErr str
294 Just (ps,qs) -> return (map hide ps ++ qs)
295 where hide p = p {exposed=False}
298 case matchingPackages str pkgs of
299 Nothing -> return pkgs
300 Just (_, qs) -> return qs
301 -- missing package is not an error for -ignore-package,
302 -- because a common usage is to -ignore-package P as
303 -- a preventative measure just in case P exists.
305 -- When a package is requested to be exposed, we hide all other
306 -- packages with the same name.
307 hideAll name ps = map maybe_hide ps
308 where maybe_hide p | pkgName (package p) == name = p {exposed=False}
312 matchingPackages :: String -> [PackageConfig]
313 -> Maybe ([PackageConfig], [PackageConfig])
314 matchingPackages str pkgs
315 = case partition (matches str) pkgs of
317 (ps,rest) -> Just (sortByVersion ps, rest)
319 -- A package named on the command line can either include the
320 -- version, or just the name if it is unambiguous.
322 = str == display (package p)
323 || str == display (pkgName (package p))
325 pickPackages :: [PackageConfig] -> [String] -> [PackageConfig]
326 pickPackages pkgs strs =
327 [ p | p <- strs, Just (p:_, _) <- [matchingPackages p pkgs] ]
329 sortByVersion :: [InstalledPackageInfo_ m] -> [InstalledPackageInfo_ m]
330 sortByVersion = sortBy (flip (comparing (pkgVersion.package)))
332 comparing :: Ord a => (t -> a) -> t -> t -> Ordering
333 comparing f a b = f a `compare` f b
335 -- -----------------------------------------------------------------------------
336 -- Hide old versions of packages
339 -- hide all packages for which there is also a later version
340 -- that is already exposed. This just makes it non-fatal to have two
341 -- versions of a package exposed, which can happen if you install a
342 -- later version of a package in the user database, for example.
344 hideOldPackages :: DynFlags -> [PackageConfig] -> IO [PackageConfig]
345 hideOldPackages dflags pkgs = mapM maybe_hide pkgs
347 | not (exposed p) = return p
348 | (p' : _) <- later_versions = do
349 debugTraceMsg dflags 2 $
350 (ptext (sLit "hiding package") <+>
351 text (display (package p)) <+>
352 ptext (sLit "to avoid conflict with later version") <+>
353 text (display (package p')))
354 return (p {exposed=False})
355 | otherwise = return p
356 where myname = pkgName (package p)
357 myversion = pkgVersion (package p)
358 later_versions = [ p | p <- pkgs, exposed p,
360 pkgName pkg == myname,
361 pkgVersion pkg > myversion ]
363 -- -----------------------------------------------------------------------------
368 -> [PackageConfig] -- database
369 -> [PackageIdentifier] -- preload packages
370 -> PackageId -- this package
371 -> IO ([PackageConfig],
375 findWiredInPackages dflags pkgs preload this_package = do
377 -- Now we must find our wired-in packages, and rename them to
378 -- their canonical names (eg. base-1.0 ==> base).
381 wired_in_pkgids :: [(PackageId, [String])]
382 wired_in_pkgids = [ (primPackageId, [""]),
383 (integerPackageId, [""]),
384 (basePackageId, [""]),
385 (rtsPackageId, [""]),
386 (haskell98PackageId, [""]),
388 (dphSeqPackageId, [""]),
389 (dphParPackageId, [""]),
390 (ndpPackageId, ["-seq", "-par"]) ]
392 matches :: PackageConfig -> (PackageId, [String]) -> Bool
393 pc `matches` (pid, suffixes)
394 = display (pkgName (package pc)) `elem`
395 (map (packageIdString pid ++) suffixes)
397 -- find which package corresponds to each wired-in package
398 -- delete any other packages with the same name
399 -- update the package and any dependencies to point to the new
402 -- When choosing which package to map to a wired-in package
403 -- name, we prefer exposed packages, and pick the latest
404 -- version. To override the default choice, -hide-package
405 -- could be used to hide newer versions.
407 findWiredInPackage :: [PackageConfig] -> (PackageId, [String])
408 -> IO (Maybe (PackageIdentifier, PackageId))
409 findWiredInPackage pkgs wired_pkg =
410 let all_ps = [ p | p <- pkgs, p `matches` wired_pkg ] in
411 case filter exposed all_ps of
414 many -> pick (head (sortByVersion many))
415 many -> pick (head (sortByVersion many))
417 suffixes = snd wired_pkg
419 debugTraceMsg dflags 2 $
420 ptext (sLit "wired-in package ")
421 <> ppr (fst wired_pkg)
424 else text (show suffixes))
425 <> ptext (sLit " not found.")
427 pick :: InstalledPackageInfo_ ModuleName
428 -> IO (Maybe (PackageIdentifier, PackageId))
430 debugTraceMsg dflags 2 $
431 ptext (sLit "wired-in package ")
432 <> ppr (fst wired_pkg)
433 <> ptext (sLit " mapped to ")
434 <> text (display (package pkg))
435 return (Just (package pkg, fst wired_pkg))
438 mb_wired_in_ids <- mapM (findWiredInPackage pkgs) wired_in_pkgids
440 wired_in_ids = catMaybes mb_wired_in_ids
442 deleteOtherWiredInPackages pkgs = filterOut bad pkgs
443 where bad p = any (p `matches`) wired_in_pkgids
444 && package p `notElem` map fst wired_in_ids
446 updateWiredInDependencies pkgs = map upd_pkg pkgs
447 where upd_pkg p = p{ package = upd_pid (package p),
448 depends = map upd_pid (depends p) }
450 upd_pid pid = case filter ((== pid) . fst) wired_in_ids of
452 ((x, y):_) -> x{ pkgName = PackageName (packageIdString y),
453 pkgVersion = Version [] [] }
455 pkgs1 = deleteOtherWiredInPackages pkgs
457 pkgs2 = updateWiredInDependencies pkgs1
459 preload1 = map upd_pid preload
461 -- we must return an updated thisPackage, just in case we
462 -- are actually compiling one of the wired-in packages
463 Just old_this_pkg = unpackPackageId this_package
464 new_this_pkg = mkPackageId (upd_pid old_this_pkg)
466 return (pkgs2, preload1, new_this_pkg)
468 -- ----------------------------------------------------------------------------
470 -- Detect any packages that have missing dependencies, and also any
471 -- mutually-recursive groups of packages (loops in the package graph
472 -- are not allowed). We do this by taking the least fixpoint of the
473 -- dependency graph, repeatedly adding packages whose dependencies are
474 -- satisfied until no more can be added.
479 -> [PackageId] -- ignored packages
480 -> IO [PackageConfig]
482 elimDanglingDeps dflags pkgs ignored = go [] pkgs'
484 pkgs' = filter (\p -> packageConfigId p `notElem` ignored) pkgs
487 case partitionWith (depsAvailable avail) not_avail of
488 ([], not_avail) -> do mapM_ reportElim not_avail; return avail
489 (new_avail, not_avail) -> go (new_avail ++ avail) (map fst not_avail)
491 depsAvailable :: [PackageConfig] -> PackageConfig
492 -> Either PackageConfig (PackageConfig, [PackageIdentifier])
493 depsAvailable pkgs_ok pkg
494 | null dangling = Left pkg
495 | otherwise = Right (pkg, dangling)
496 where dangling = filter (`notElem` pids) (depends pkg)
497 pids = map package pkgs_ok
499 reportElim (p, deps) =
500 debugTraceMsg dflags 2 $
501 (ptext (sLit "package") <+> pprPkg p <+>
502 ptext (sLit "will be ignored due to missing or recursive dependencies:") $$
503 nest 2 (hsep (map (text.display) deps)))
505 -- -----------------------------------------------------------------------------
506 -- When all the command-line options are in, we can process our package
507 -- settings and populate the package state.
511 -> PackageConfigMap -- initial database
512 -> [PackageId] -- preloaded packages
513 -> PackageId -- this package
515 [PackageId], -- new packages to preload
516 PackageId) -- this package, might be modified if the current
518 -- package is a wired-in package.
520 mkPackageState dflags orig_pkg_db preload0 this_package = do
522 -- Modify the package database according to the command-line flags
523 -- (-package, -hide-package, -ignore-package, -hide-all-packages).
525 let flags = reverse (packageFlags dflags)
526 let pkgs0 = eltsUFM orig_pkg_db
527 pkgs1 <- foldM applyPackageFlag pkgs0 flags
529 -- Here we build up a set of the packages mentioned in -package
530 -- flags on the command line; these are called the "preload"
531 -- packages. we link these packages in eagerly. The preload set
532 -- should contain at least rts & base, which is why we pretend that
533 -- the command line contains -package rts & -package base.
535 let new_preload_packages =
536 map package (pickPackages pkgs0 [ p | ExposePackage p <- flags ])
538 -- hide packages that are subsumed by later versions
539 pkgs2 <- hideOldPackages dflags pkgs1
541 -- sort out which packages are wired in
542 (pkgs3, preload1, new_this_pkg)
543 <- findWiredInPackages dflags pkgs2 new_preload_packages this_package
545 let ignored = map packageConfigId $
546 pickPackages pkgs0 [ p | IgnorePackage p <- flags ]
547 pkgs <- elimDanglingDeps dflags pkgs3 ignored
549 let pkg_db = extendPackageConfigMap emptyPackageConfigMap pkgs
551 -- add base & rts to the preload packages
553 | dopt Opt_AutoLinkPackages dflags
554 = filter (flip elemUFM pkg_db) [basePackageId, rtsPackageId]
556 -- but in any case remove the current package from the set of
557 -- preloaded packages so that base/rts does not end up in the
558 -- set up preloaded package when we are just building it
559 preload2 = nub (filter (/= new_this_pkg)
560 (basicLinkedPackages ++ map mkPackageId preload1))
562 -- Close the preload packages with their dependencies
563 dep_preload <- closeDeps pkg_db (zip preload2 (repeat Nothing))
564 let new_dep_preload = filter (`notElem` preload0) dep_preload
566 let pstate = PackageState{ preloadPackages = dep_preload,
568 moduleToPkgConfAll = mkModuleMap pkg_db
571 return (pstate, new_dep_preload, new_this_pkg)
574 -- -----------------------------------------------------------------------------
575 -- Make the mapping from module to package info
579 -> UniqFM [(PackageConfig, Bool)]
580 mkModuleMap pkg_db = foldr extend_modmap emptyUFM pkgids
582 pkgids = map packageConfigId (eltsUFM pkg_db)
584 extend_modmap pkgid modmap =
585 addListToUFM_C (++) modmap
586 ([(m, [(pkg, True)]) | m <- exposed_mods] ++
587 [(m, [(pkg, False)]) | m <- hidden_mods])
589 pkg = expectJust "mkModuleMap" (lookupPackage pkg_db pkgid)
590 exposed_mods = exposedModules pkg
591 hidden_mods = hiddenModules pkg
593 pprPkg :: PackageConfig -> SDoc
594 pprPkg p = text (display (package p))
596 -- -----------------------------------------------------------------------------
597 -- Extracting information from the packages in scope
599 -- Many of these functions take a list of packages: in those cases,
600 -- the list is expected to contain the "dependent packages",
601 -- i.e. those packages that were found to be depended on by the
602 -- current module/program. These can be auto or non-auto packages, it
603 -- doesn't really matter. The list is always combined with the list
604 -- of preload (command-line) packages to determine which packages to
607 getPackageIncludePath :: DynFlags -> [PackageId] -> IO [String]
608 getPackageIncludePath dflags pkgs =
609 collectIncludeDirs `fmap` getPreloadPackagesAnd dflags pkgs
611 collectIncludeDirs :: [PackageConfig] -> [FilePath]
612 collectIncludeDirs ps = nub (filter notNull (concatMap includeDirs ps))
614 getPackageLibraryPath :: DynFlags -> [PackageId] -> IO [String]
615 getPackageLibraryPath dflags pkgs =
616 collectLibraryPaths `fmap` getPreloadPackagesAnd dflags pkgs
618 collectLibraryPaths :: [PackageConfig] -> [FilePath]
619 collectLibraryPaths ps = nub (filter notNull (concatMap libraryDirs ps))
621 getPackageLinkOpts :: DynFlags -> [PackageId] -> IO [String]
622 getPackageLinkOpts dflags pkgs =
623 collectLinkOpts dflags `fmap` getPreloadPackagesAnd dflags pkgs
625 collectLinkOpts :: DynFlags -> [PackageConfig] -> [String]
626 collectLinkOpts dflags ps = concat (map all_opts ps)
628 tag = buildTag dflags
629 rts_tag = rtsBuildTag dflags
631 mkDynName | opt_Static = id
632 | otherwise = (++ ("-ghc" ++ cProjectVersion))
633 libs p = map (mkDynName . addSuffix) (hsLibraries p)
635 all_opts p = map ("-l" ++) (libs p) ++ ldOptions p
637 addSuffix rts@"HSrts" = rts ++ (expandTag rts_tag)
638 addSuffix other_lib = other_lib ++ (expandTag tag)
640 expandTag t | null t = ""
643 getPackageExtraCcOpts :: DynFlags -> [PackageId] -> IO [String]
644 getPackageExtraCcOpts dflags pkgs = do
645 ps <- getPreloadPackagesAnd dflags pkgs
646 return (concatMap ccOptions ps)
648 getPackageFrameworkPath :: DynFlags -> [PackageId] -> IO [String]
649 getPackageFrameworkPath dflags pkgs = do
650 ps <- getPreloadPackagesAnd dflags pkgs
651 return (nub (filter notNull (concatMap frameworkDirs ps)))
653 getPackageFrameworks :: DynFlags -> [PackageId] -> IO [String]
654 getPackageFrameworks dflags pkgs = do
655 ps <- getPreloadPackagesAnd dflags pkgs
656 return (concatMap frameworks ps)
658 -- -----------------------------------------------------------------------------
661 -- | Takes a Module, and if the module is in a package returns
662 -- @(pkgconf,exposed)@ where pkgconf is the PackageConfig for that package,
663 -- and exposed is True if the package exposes the module.
664 lookupModuleInAllPackages :: DynFlags -> ModuleName -> [(PackageConfig,Bool)]
665 lookupModuleInAllPackages dflags m =
666 case lookupUFM (moduleToPkgConfAll (pkgState dflags)) m of
670 getPreloadPackagesAnd :: DynFlags -> [PackageId] -> IO [PackageConfig]
671 getPreloadPackagesAnd dflags pkgids =
673 state = pkgState dflags
674 pkg_map = pkgIdMap state
675 preload = preloadPackages state
676 pairs = zip pkgids (repeat Nothing)
678 all_pkgs <- throwErr (foldM (add_package pkg_map) preload pairs)
679 return (map (getPackageDetails state) all_pkgs)
681 -- Takes a list of packages, and returns the list with dependencies included,
682 -- in reverse dependency order (a package appears before those it depends on).
683 closeDeps :: PackageConfigMap -> [(PackageId, Maybe PackageId)]
685 closeDeps pkg_map ps = throwErr (closeDepsErr pkg_map ps)
687 throwErr :: MaybeErr Message a -> IO a
688 throwErr m = case m of
689 Failed e -> ghcError (CmdLineError (showSDoc e))
690 Succeeded r -> return r
692 closeDepsErr :: PackageConfigMap -> [(PackageId,Maybe PackageId)]
693 -> MaybeErr Message [PackageId]
694 closeDepsErr pkg_map ps = foldM (add_package pkg_map) [] ps
697 add_package :: PackageConfigMap -> [PackageId] -> (PackageId,Maybe PackageId)
698 -> MaybeErr Message [PackageId]
699 add_package pkg_db ps (p, mb_parent)
700 | p `elem` ps = return ps -- Check if we've already added this package
702 case lookupPackage pkg_db p of
703 Nothing -> Failed (missingPackageMsg (packageIdString p) <>
704 missingDependencyMsg mb_parent)
706 -- Add the package's dependents also
707 let deps = map mkPackageId (depends pkg)
708 ps' <- foldM (add_package pkg_db) ps (zip deps (repeat (Just p)))
711 missingPackageErr :: String -> IO [PackageConfig]
712 missingPackageErr p = ghcError (CmdLineError (showSDoc (missingPackageMsg p)))
714 missingPackageMsg :: String -> SDoc
715 missingPackageMsg p = ptext (sLit "unknown package:") <+> text p
717 missingDependencyMsg :: Maybe PackageId -> SDoc
718 missingDependencyMsg Nothing = empty
719 missingDependencyMsg (Just parent)
720 = space <> parens (ptext (sLit "dependency of") <+> ftext (packageIdFS parent))
722 -- -----------------------------------------------------------------------------
724 isDllName :: PackageId -> Name -> Bool
725 isDllName this_pkg name
727 | Just mod <- nameModule_maybe name = modulePackageId mod /= this_pkg
728 | otherwise = False -- no, it is not even an external name
730 -- -----------------------------------------------------------------------------
731 -- Displaying packages
733 dumpPackages :: DynFlags -> IO ()
734 -- Show package info on console, if verbosity is >= 3
736 = do let pkg_map = pkgIdMap (pkgState dflags)
738 vcat (map (text . showInstalledPackageInfo
739 . packageConfigToInstalledPackageInfo)