2 % (c) The University of Glasgow, 2006
5 -- | Package manipulation
9 -- * The PackageConfigMap
10 PackageConfigMap, emptyPackageConfigMap, lookupPackage,
11 extendPackageConfigMap, dumpPackages,
13 -- * Reading the package config, and processing cmdline args
17 lookupModuleInAllPackages,
19 -- * Inspecting the set of packages in scope
20 getPackageIncludePath,
21 getPackageLibraryPath,
23 getPackageExtraCcOpts,
24 getPackageFrameworkPath,
26 getPreloadPackagesAnd,
28 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, PackageId)
55 import ErrUtils ( debugTraceMsg, putMsg, Message )
58 import System.Directory
59 import System.FilePath
64 -- ---------------------------------------------------------------------------
67 -- | Package state is all stored in 'DynFlag's, including the details of
68 -- all packages, which packages are exposed, and which modules they
71 -- The package state is computed by 'initPackages', and kept in DynFlags.
73 -- * @-package <pkg>@ causes @<pkg>@ to become exposed, and all other packages
74 -- with the same name to become hidden.
76 -- * @-hide-package <pkg>@ causes @<pkg>@ to become hidden.
78 -- * Let @exposedPackages@ be the set of packages thus exposed.
79 -- Let @depExposedPackages@ be the transitive closure from @exposedPackages@ of
80 -- their dependencies.
82 -- * When searching for a module from an preload import declaration,
83 -- only the exposed modules in @exposedPackages@ are valid.
85 -- * When searching for a module from an implicit import, all modules
86 -- from @depExposedPackages@ are valid.
88 -- * When linking in a compilation manager mode, we link in packages the
89 -- program depends on (the compiler knows this list by the
90 -- time it gets to the link step). Also, we link in all packages
91 -- which were mentioned with preload @-package@ flags on the command-line,
92 -- or are a transitive dependency of same, or are \"base\"\/\"rts\".
93 -- The reason for this is that we might need packages which don't
94 -- contain any Haskell modules, and therefore won't be discovered
95 -- by the normal mechanism of dependency tracking.
99 -- When compiling module A, which imports module B, we need to
100 -- know whether B will be in the same DLL as A.
101 -- If it's in the same DLL, we refer to B_f_closure
102 -- If it isn't, we refer to _imp__B_f_closure
103 -- When compiling A, we record in B's Module value whether it's
104 -- in a different DLL, by setting the DLL flag.
106 data PackageState = PackageState {
107 pkgIdMap :: PackageConfigMap, -- PackageId -> PackageConfig
108 -- The exposed flags are adjusted according to -package and
109 -- -hide-package flags, and -ignore-package removes packages.
111 preloadPackages :: [PackageId],
112 -- The packages we're going to link in eagerly. This list
113 -- should be in reverse dependency order; that is, a package
114 -- is always mentioned before the packages it depends on.
116 moduleToPkgConfAll :: UniqFM [(PackageConfig,Bool)] -- ModuleEnv mapping
117 -- Derived from pkgIdMap.
118 -- Maps Module to (pkgconf,exposed), where pkgconf is the
119 -- PackageConfig for the package containing the module, and
120 -- exposed is True if the package exposes that module.
123 -- | A PackageConfigMap maps a 'PackageId' to a 'PackageConfig'
124 type PackageConfigMap = UniqFM PackageConfig
126 emptyPackageConfigMap :: PackageConfigMap
127 emptyPackageConfigMap = emptyUFM
129 -- | Find the package we know about with the given id (e.g. \"foo-1.0\"), if any
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 -- | Looks up the package with the given id in the package state, panicing if it is
141 getPackageDetails :: PackageState -> PackageId -> PackageConfig
142 getPackageDetails ps pid = expectJust "getPackageDetails" (lookupPackage (pkgIdMap ps) pid)
144 -- ----------------------------------------------------------------------------
145 -- Loading the package config files and building up the package state
147 -- | Call this after 'DynFlags.parseDynFlags'. It reads the package
148 -- configuration files, and sets up various internal tables of package
149 -- information, according to the package-related flags on the
150 -- command-line (@-package@, @-hide-package@ etc.)
152 -- Returns a list of packages to link in if we're doing dynamic linking.
153 -- This list contains the packages that the user explicitly mentioned with
156 -- 'initPackages' can be called again subsequently after updating the
157 -- 'packageFlags' field of the 'DynFlags', and it will update the
158 -- 'pkgState' in 'DynFlags' and return a list of packages to
160 initPackages :: DynFlags -> IO (DynFlags, [PackageId])
161 initPackages dflags = do
162 pkg_db <- case pkgDatabase dflags of
163 Nothing -> readPackageConfigs dflags
165 (pkg_state, preload, this_pkg)
166 <- mkPackageState dflags pkg_db [] (thisPackage dflags)
167 return (dflags{ pkgDatabase = Just pkg_db,
168 pkgState = pkg_state,
169 thisPackage = this_pkg },
172 -- -----------------------------------------------------------------------------
173 -- Reading the package database(s)
175 readPackageConfigs :: DynFlags -> IO PackageConfigMap
176 readPackageConfigs dflags = do
177 e_pkg_path <- tryIO (getEnv "GHC_PACKAGE_PATH")
178 system_pkgconfs <- getSystemPackageConfigs dflags
180 let pkgconfs = case e_pkg_path of
181 Left _ -> system_pkgconfs
183 | last cs == "" -> init cs ++ system_pkgconfs
185 where cs = parseSearchPath path
186 -- if the path ends in a separator (eg. "/foo/bar:")
187 -- the we tack on the system paths.
189 -- Read all the ones mentioned in -package-conf flags
190 pkg_map <- foldM (readPackageConfig dflags) emptyPackageConfigMap
191 (reverse pkgconfs ++ extraPkgConfs dflags)
196 getSystemPackageConfigs :: DynFlags -> IO [FilePath]
197 getSystemPackageConfigs dflags = do
198 -- System one always comes first
199 let system_pkgconf = systemPackageConfig dflags
201 -- allow package.conf.d to contain a bunch of .conf files
202 -- containing package specifications. This is an easier way
203 -- to maintain the package database on systems with a package
204 -- management system, or systems that don't want to run ghc-pkg
205 -- to register or unregister packages. Undocumented feature for now.
206 let system_pkgconf_dir = system_pkgconf <.> "d"
207 system_pkgconf_dir_exists <- doesDirectoryExist system_pkgconf_dir
209 if system_pkgconf_dir_exists
210 then do files <- getDirectoryContents system_pkgconf_dir
211 return [ system_pkgconf_dir </> file
213 , takeExtension file == ".conf" ]
216 -- Read user's package conf (eg. ~/.ghc/i386-linux-6.3/package.conf)
217 -- unless the -no-user-package-conf flag was given.
218 -- We only do this when getAppUserDataDirectory is available
221 appdir <- getAppUserDataDirectory "ghc"
224 </> (TARGET_ARCH ++ '-':TARGET_OS ++ '-':cProjectVersion)
226 flg <- doesFileExist pkgconf
227 if (flg && dopt Opt_ReadUserPackageConf dflags)
228 then return [pkgconf]
230 `catchIO` (\_ -> return [])
232 return (user_pkgconf ++ system_pkgconfs ++ [system_pkgconf])
236 :: DynFlags -> PackageConfigMap -> FilePath -> IO PackageConfigMap
237 readPackageConfig dflags pkg_map conf_file = do
238 debugTraceMsg dflags 2 (text "Using package config file:" <+> text conf_file)
239 proto_pkg_configs <- loadPackageConfig dflags conf_file
240 let top_dir = topDir dflags
241 pkg_configs1 = mungePackagePaths top_dir proto_pkg_configs
242 pkg_configs2 = maybeHidePackages dflags pkg_configs1
243 return (extendPackageConfigMap pkg_map pkg_configs2)
245 maybeHidePackages :: DynFlags -> [PackageConfig] -> [PackageConfig]
246 maybeHidePackages dflags pkgs
247 | dopt Opt_HideAllPackages dflags = map hide pkgs
250 hide pkg = pkg{ exposed = False }
252 mungePackagePaths :: String -> [PackageConfig] -> [PackageConfig]
253 -- Replace the string "$topdir" at the beginning of a path
254 -- with the current topdir (obtained from the -B option).
255 mungePackagePaths top_dir ps = map munge_pkg ps
257 munge_pkg p = p{ importDirs = munge_paths (importDirs p),
258 includeDirs = munge_paths (includeDirs p),
259 libraryDirs = munge_paths (libraryDirs p),
260 frameworkDirs = munge_paths (frameworkDirs p),
261 haddockInterfaces = munge_paths (haddockInterfaces p),
262 haddockHTMLs = munge_paths (haddockHTMLs p)
265 munge_paths = map munge_path
268 | Just p' <- stripPrefix "$topdir" p = top_dir ++ p'
269 | Just p' <- stripPrefix "$httptopdir" p = toHttpPath top_dir ++ p'
272 toHttpPath p = "file:///" ++ p
275 -- -----------------------------------------------------------------------------
276 -- Modify our copy of the package database based on a package flag
277 -- (-package, -hide-package, -ignore-package).
280 :: [PackageConfig] -- Initial database
281 -> PackageFlag -- flag to apply
282 -> IO [PackageConfig] -- new database
284 applyPackageFlag pkgs flag =
287 case matchingPackages str pkgs of
288 Nothing -> missingPackageErr str
289 Just ([], _) -> panic "applyPackageFlag"
290 Just (p:ps,qs) -> return (p':ps')
291 where p' = p {exposed=True}
292 ps' = hideAll (pkgName (package p)) (ps++qs)
295 case matchingPackages str pkgs of
296 Nothing -> missingPackageErr str
297 Just (ps,qs) -> return (map hide ps ++ qs)
298 where hide p = p {exposed=False}
301 case matchingPackages str pkgs of
302 Nothing -> return pkgs
303 Just (_, qs) -> return qs
304 -- missing package is not an error for -ignore-package,
305 -- because a common usage is to -ignore-package P as
306 -- a preventative measure just in case P exists.
308 -- When a package is requested to be exposed, we hide all other
309 -- packages with the same name.
310 hideAll name ps = map maybe_hide ps
311 where maybe_hide p | pkgName (package p) == name = p {exposed=False}
315 matchingPackages :: String -> [PackageConfig]
316 -> Maybe ([PackageConfig], [PackageConfig])
317 matchingPackages str pkgs
318 = case partition (packageMatches str) pkgs of
320 (ps,rest) -> Just (sortByVersion ps, rest)
322 -- A package named on the command line can either include the
323 -- version, or just the name if it is unambiguous.
324 packageMatches :: String -> PackageConfig -> Bool
326 = str == display (package p)
327 || str == display (pkgName (package p))
329 pickPackages :: [PackageConfig] -> [String] -> [PackageConfig]
330 pickPackages pkgs strs =
331 [ p | p <- strs, Just (p:_, _) <- [matchingPackages p pkgs] ]
333 sortByVersion :: [InstalledPackageInfo_ m] -> [InstalledPackageInfo_ m]
334 sortByVersion = sortBy (flip (comparing (pkgVersion.package)))
336 comparing :: Ord a => (t -> a) -> t -> t -> Ordering
337 comparing f a b = f a `compare` f b
339 -- -----------------------------------------------------------------------------
340 -- Hide old versions of packages
343 -- hide all packages for which there is also a later version
344 -- that is already exposed. This just makes it non-fatal to have two
345 -- versions of a package exposed, which can happen if you install a
346 -- later version of a package in the user database, for example.
348 hideOldPackages :: DynFlags -> [PackageConfig] -> IO [PackageConfig]
349 hideOldPackages dflags pkgs = mapM maybe_hide pkgs
351 | not (exposed p) = return p
352 | (p' : _) <- later_versions = do
353 debugTraceMsg dflags 2 $
354 (ptext (sLit "hiding package") <+>
355 text (display (package p)) <+>
356 ptext (sLit "to avoid conflict with later version") <+>
357 text (display (package p')))
358 return (p {exposed=False})
359 | otherwise = return p
360 where myname = pkgName (package p)
361 myversion = pkgVersion (package p)
362 later_versions = [ p | p <- pkgs, exposed p,
364 pkgName pkg == myname,
365 pkgVersion pkg > myversion ]
367 -- -----------------------------------------------------------------------------
372 -> [PackageConfig] -- database
373 -> [PackageIdentifier] -- preload packages
374 -> PackageId -- this package
375 -> IO ([PackageConfig],
379 findWiredInPackages dflags pkgs preload this_package = do
381 -- Now we must find our wired-in packages, and rename them to
382 -- their canonical names (eg. base-1.0 ==> base).
385 wired_in_pkgids :: [(PackageId, [String])]
386 wired_in_pkgids = [ (primPackageId, [""]),
387 (integerPackageId, [""]),
388 (basePackageId, [""]),
389 (rtsPackageId, [""]),
390 (haskell98PackageId, [""]),
392 (dphSeqPackageId, [""]),
393 (dphParPackageId, [""])]
395 matches :: PackageConfig -> (PackageId, [String]) -> Bool
396 pc `matches` (pid, suffixes)
397 = display (pkgName (package pc)) `elem`
398 (map (packageIdString pid ++) suffixes)
400 -- find which package corresponds to each wired-in package
401 -- delete any other packages with the same name
402 -- update the package and any dependencies to point to the new
405 -- When choosing which package to map to a wired-in package
406 -- name, we prefer exposed packages, and pick the latest
407 -- version. To override the default choice, -hide-package
408 -- could be used to hide newer versions.
410 findWiredInPackage :: [PackageConfig] -> (PackageId, [String])
411 -> IO (Maybe (PackageIdentifier, PackageId))
412 findWiredInPackage pkgs wired_pkg =
413 let all_ps = [ p | p <- pkgs, p `matches` wired_pkg ] in
416 many -> pick (head (sortByVersion many))
418 suffixes = snd wired_pkg
420 debugTraceMsg dflags 2 $
421 ptext (sLit "wired-in package ")
422 <> ppr (fst wired_pkg)
425 else text (show suffixes))
426 <> ptext (sLit " not found.")
428 pick :: InstalledPackageInfo_ ModuleName
429 -> IO (Maybe (PackageIdentifier, PackageId))
431 debugTraceMsg dflags 2 $
432 ptext (sLit "wired-in package ")
433 <> ppr (fst wired_pkg)
434 <> ptext (sLit " mapped to ")
435 <> text (display (package pkg))
436 return (Just (package pkg, fst wired_pkg))
439 mb_wired_in_ids <- mapM (findWiredInPackage pkgs) wired_in_pkgids
441 wired_in_ids = catMaybes mb_wired_in_ids
443 -- this is old: we used to assume that if there were
444 -- multiple versions of wired-in packages installed that
445 -- they were mutually exclusive. Now we're assuming that
446 -- you have one "main" version of each wired-in package
447 -- (the latest version), and the others are backward-compat
448 -- wrappers that depend on this one. e.g. base-4.0 is the
449 -- latest, base-3.0 is a compat wrapper depending on base-4.0.
451 deleteOtherWiredInPackages pkgs = filterOut bad pkgs
452 where bad p = any (p `matches`) wired_in_pkgids
453 && package p `notElem` map fst wired_in_ids
456 updateWiredInDependencies pkgs = map upd_pkg pkgs
457 where upd_pkg p = p{ package = upd_pid (package p),
458 depends = map upd_pid (depends p) }
460 upd_pid pid = case filter ((== pid) . fst) wired_in_ids of
462 ((x, y):_) -> x{ pkgName = PackageName (packageIdString y),
463 pkgVersion = Version [] [] }
465 -- pkgs1 = deleteOtherWiredInPackages pkgs
467 pkgs2 = updateWiredInDependencies pkgs
469 preload1 = map upd_pid preload
471 -- we must return an updated thisPackage, just in case we
472 -- are actually compiling one of the wired-in packages
473 Just old_this_pkg = unpackPackageId this_package
474 new_this_pkg = mkPackageId (upd_pid old_this_pkg)
476 return (pkgs2, preload1, new_this_pkg)
478 -- ----------------------------------------------------------------------------
480 -- Detect any packages that have missing dependencies, and also any
481 -- mutually-recursive groups of packages (loops in the package graph
482 -- are not allowed). We do this by taking the least fixpoint of the
483 -- dependency graph, repeatedly adding packages whose dependencies are
484 -- satisfied until no more can be added.
489 -> [PackageId] -- ignored packages
490 -> IO [PackageConfig]
492 elimDanglingDeps dflags pkgs ignored = go [] pkgs'
494 pkgs' = filter (\p -> packageConfigId p `notElem` ignored) pkgs
497 case partitionWith (depsAvailable avail) not_avail of
498 ([], not_avail) -> do mapM_ reportElim not_avail; return avail
499 (new_avail, not_avail) -> go (new_avail ++ avail) (map fst not_avail)
501 depsAvailable :: [PackageConfig] -> PackageConfig
502 -> Either PackageConfig (PackageConfig, [PackageIdentifier])
503 depsAvailable pkgs_ok pkg
504 | null dangling = Left pkg
505 | otherwise = Right (pkg, dangling)
506 where dangling = filter (`notElem` pids) (depends pkg)
507 pids = map package pkgs_ok
509 reportElim (p, deps) =
510 debugTraceMsg dflags 2 $
511 (ptext (sLit "package") <+> pprPkg p <+>
512 ptext (sLit "will be ignored due to missing or recursive dependencies:") $$
513 nest 2 (hsep (map (text.display) deps)))
515 -- -----------------------------------------------------------------------------
516 -- When all the command-line options are in, we can process our package
517 -- settings and populate the package state.
521 -> PackageConfigMap -- initial database
522 -> [PackageId] -- preloaded packages
523 -> PackageId -- this package
525 [PackageId], -- new packages to preload
526 PackageId) -- this package, might be modified if the current
528 -- package is a wired-in package.
530 mkPackageState dflags orig_pkg_db preload0 this_package = do
532 -- Modify the package database according to the command-line flags
533 -- (-package, -hide-package, -ignore-package, -hide-all-packages).
535 let flags = reverse (packageFlags dflags)
536 let pkgs0 = eltsUFM orig_pkg_db
537 pkgs1 <- foldM applyPackageFlag pkgs0 flags
539 -- Here we build up a set of the packages mentioned in -package
540 -- flags on the command line; these are called the "preload"
541 -- packages. we link these packages in eagerly. The preload set
542 -- should contain at least rts & base, which is why we pretend that
543 -- the command line contains -package rts & -package base.
545 let new_preload_packages =
546 map package (pickPackages pkgs0 [ p | ExposePackage p <- flags ])
548 -- hide packages that are subsumed by later versions
549 pkgs2 <- hideOldPackages dflags pkgs1
551 -- sort out which packages are wired in
552 (pkgs3, preload1, new_this_pkg)
553 <- findWiredInPackages dflags pkgs2 new_preload_packages this_package
555 let ignored = map packageConfigId $
556 pickPackages pkgs0 [ p | IgnorePackage p <- flags ]
557 pkgs <- elimDanglingDeps dflags pkgs3 ignored
559 let pkg_db = extendPackageConfigMap emptyPackageConfigMap pkgs
561 -- add base & rts to the preload packages
563 | dopt Opt_AutoLinkPackages dflags
564 = filter (flip elemUFM pkg_db) [basePackageId, rtsPackageId]
566 -- but in any case remove the current package from the set of
567 -- preloaded packages so that base/rts does not end up in the
568 -- set up preloaded package when we are just building it
569 preload2 = nub (filter (/= new_this_pkg)
570 (basicLinkedPackages ++ map mkPackageId preload1))
572 -- Close the preload packages with their dependencies
573 dep_preload <- closeDeps pkg_db (zip preload2 (repeat Nothing))
574 let new_dep_preload = filter (`notElem` preload0) dep_preload
576 let pstate = PackageState{ preloadPackages = dep_preload,
578 moduleToPkgConfAll = mkModuleMap pkg_db
581 return (pstate, new_dep_preload, new_this_pkg)
584 -- -----------------------------------------------------------------------------
585 -- Make the mapping from module to package info
589 -> UniqFM [(PackageConfig, Bool)]
590 mkModuleMap pkg_db = foldr extend_modmap emptyUFM pkgids
592 pkgids = map packageConfigId (eltsUFM pkg_db)
594 extend_modmap pkgid modmap =
595 addListToUFM_C (++) modmap
596 ([(m, [(pkg, True)]) | m <- exposed_mods] ++
597 [(m, [(pkg, False)]) | m <- hidden_mods])
599 pkg = expectJust "mkModuleMap" (lookupPackage pkg_db pkgid)
600 exposed_mods = exposedModules pkg
601 hidden_mods = hiddenModules pkg
603 pprPkg :: PackageConfig -> SDoc
604 pprPkg p = text (display (package p))
606 -- -----------------------------------------------------------------------------
607 -- Extracting information from the packages in scope
609 -- Many of these functions take a list of packages: in those cases,
610 -- the list is expected to contain the "dependent packages",
611 -- i.e. those packages that were found to be depended on by the
612 -- current module/program. These can be auto or non-auto packages, it
613 -- doesn't really matter. The list is always combined with the list
614 -- of preload (command-line) packages to determine which packages to
617 -- | Find all the include directories in these and the preload packages
618 getPackageIncludePath :: DynFlags -> [PackageId] -> IO [String]
619 getPackageIncludePath dflags pkgs =
620 collectIncludeDirs `fmap` getPreloadPackagesAnd dflags pkgs
622 collectIncludeDirs :: [PackageConfig] -> [FilePath]
623 collectIncludeDirs ps = nub (filter notNull (concatMap includeDirs ps))
625 -- | Find all the library paths in these and the preload packages
626 getPackageLibraryPath :: DynFlags -> [PackageId] -> IO [String]
627 getPackageLibraryPath dflags pkgs =
628 collectLibraryPaths `fmap` getPreloadPackagesAnd dflags pkgs
630 collectLibraryPaths :: [PackageConfig] -> [FilePath]
631 collectLibraryPaths ps = nub (filter notNull (concatMap libraryDirs ps))
633 -- | Find all the link options in these and the preload packages
634 getPackageLinkOpts :: DynFlags -> [PackageId] -> IO [String]
635 getPackageLinkOpts dflags pkgs =
636 collectLinkOpts dflags `fmap` getPreloadPackagesAnd dflags pkgs
638 collectLinkOpts :: DynFlags -> [PackageConfig] -> [String]
639 collectLinkOpts dflags ps = concat (map all_opts ps)
641 libs p = packageHsLibs dflags p ++ extraLibraries p
642 all_opts p = map ("-l" ++) (libs p) ++ ldOptions p
644 packageHsLibs :: DynFlags -> PackageConfig -> [String]
645 packageHsLibs dflags p = map (mkDynName . addSuffix) (hsLibraries p)
647 tag = buildTag dflags
648 rts_tag = rtsBuildTag dflags
650 mkDynName | opt_Static = id
651 | otherwise = (++ ("-ghc" ++ cProjectVersion))
653 addSuffix rts@"HSrts" = rts ++ (expandTag rts_tag)
654 addSuffix other_lib = other_lib ++ (expandTag tag)
656 expandTag t | null t = ""
659 -- | Find all the C-compiler options in these and the preload packages
660 getPackageExtraCcOpts :: DynFlags -> [PackageId] -> IO [String]
661 getPackageExtraCcOpts dflags pkgs = do
662 ps <- getPreloadPackagesAnd dflags pkgs
663 return (concatMap ccOptions ps)
665 -- | Find all the package framework paths in these and the preload packages
666 getPackageFrameworkPath :: DynFlags -> [PackageId] -> IO [String]
667 getPackageFrameworkPath dflags pkgs = do
668 ps <- getPreloadPackagesAnd dflags pkgs
669 return (nub (filter notNull (concatMap frameworkDirs ps)))
671 -- | Find all the package frameworks in these and the preload packages
672 getPackageFrameworks :: DynFlags -> [PackageId] -> IO [String]
673 getPackageFrameworks dflags pkgs = do
674 ps <- getPreloadPackagesAnd dflags pkgs
675 return (concatMap frameworks ps)
677 -- -----------------------------------------------------------------------------
680 -- | Takes a 'Module', and if the module is in a package returns
681 -- @(pkgconf, exposed)@ where pkgconf is the PackageConfig for that package,
682 -- and exposed is @True@ if the package exposes the module.
683 lookupModuleInAllPackages :: DynFlags -> ModuleName -> [(PackageConfig,Bool)]
684 lookupModuleInAllPackages dflags m =
685 case lookupUFM (moduleToPkgConfAll (pkgState dflags)) m of
689 -- | Find all the 'PackageConfig' in both the preload packages from 'DynFlags' and corresponding to the list of
691 getPreloadPackagesAnd :: DynFlags -> [PackageId] -> IO [PackageConfig]
692 getPreloadPackagesAnd dflags pkgids =
694 state = pkgState dflags
695 pkg_map = pkgIdMap state
696 preload = preloadPackages state
697 pairs = zip pkgids (repeat Nothing)
699 all_pkgs <- throwErr (foldM (add_package pkg_map) preload pairs)
700 return (map (getPackageDetails state) all_pkgs)
702 -- Takes a list of packages, and returns the list with dependencies included,
703 -- in reverse dependency order (a package appears before those it depends on).
704 closeDeps :: PackageConfigMap -> [(PackageId, Maybe PackageId)]
706 closeDeps pkg_map ps = throwErr (closeDepsErr pkg_map ps)
708 throwErr :: MaybeErr Message a -> IO a
709 throwErr m = case m of
710 Failed e -> ghcError (CmdLineError (showSDoc e))
711 Succeeded r -> return r
713 closeDepsErr :: PackageConfigMap -> [(PackageId,Maybe PackageId)]
714 -> MaybeErr Message [PackageId]
715 closeDepsErr pkg_map ps = foldM (add_package pkg_map) [] ps
718 add_package :: PackageConfigMap -> [PackageId] -> (PackageId,Maybe PackageId)
719 -> MaybeErr Message [PackageId]
720 add_package pkg_db ps (p, mb_parent)
721 | p `elem` ps = return ps -- Check if we've already added this package
723 case lookupPackage pkg_db p of
724 Nothing -> Failed (missingPackageMsg (packageIdString p) <>
725 missingDependencyMsg mb_parent)
727 -- Add the package's dependents also
728 let deps = map mkPackageId (depends pkg)
729 ps' <- foldM (add_package pkg_db) ps (zip deps (repeat (Just p)))
732 missingPackageErr :: String -> IO [PackageConfig]
733 missingPackageErr p = ghcError (CmdLineError (showSDoc (missingPackageMsg p)))
735 missingPackageMsg :: String -> SDoc
736 missingPackageMsg p = ptext (sLit "unknown package:") <+> text p
738 missingDependencyMsg :: Maybe PackageId -> SDoc
739 missingDependencyMsg Nothing = empty
740 missingDependencyMsg (Just parent)
741 = space <> parens (ptext (sLit "dependency of") <+> ftext (packageIdFS parent))
743 -- -----------------------------------------------------------------------------
745 -- | Will the 'Name' come from a dynamically linked library?
746 isDllName :: PackageId -> Name -> Bool
747 isDllName this_pkg name
749 | Just mod <- nameModule_maybe name = modulePackageId mod /= this_pkg
750 | otherwise = False -- no, it is not even an external name
752 -- -----------------------------------------------------------------------------
753 -- Displaying packages
755 -- | Show package info on console, if verbosity is >= 3
756 dumpPackages :: DynFlags -> IO ()
758 = do let pkg_map = pkgIdMap (pkgState dflags)
760 vcat (map (text . showInstalledPackageInfo
761 . packageConfigToInstalledPackageInfo)