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,
35 #include "HsVersions.h"
38 import ParsePkgConf ( loadPackageConfig )
39 import DynFlags ( dopt, DynFlag(..), DynFlags(..), PackageFlag(..) )
40 import StaticFlags ( opt_Static )
41 import Config ( cProjectVersion )
42 import Name ( Name, nameModule_maybe )
46 import Maybes ( expectJust, MaybeErr(..) )
50 import System.Environment ( getEnv )
51 import Distribution.InstalledPackageInfo hiding (depends)
52 import Distribution.Package hiding (depends)
53 import Distribution.Text
54 import Distribution.Version
56 import ErrUtils ( debugTraceMsg, putMsg, Message )
59 import System.Directory
60 import System.FilePath
65 -- ---------------------------------------------------------------------------
68 -- | Package state is all stored in 'DynFlag's, 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 compilation 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 this 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 -- | Find the package we know about with the given id (e.g. \"foo-1.0\"), if any
131 lookupPackage :: PackageConfigMap -> PackageId -> Maybe PackageConfig
132 lookupPackage = lookupUFM
134 extendPackageConfigMap
135 :: PackageConfigMap -> [PackageConfig] -> PackageConfigMap
136 extendPackageConfigMap pkg_map new_pkgs
137 = foldl add pkg_map new_pkgs
138 where add pkg_map p = addToUFM pkg_map (packageConfigId p) p
140 -- | Looks up the package with the given id in the package state, panicing if it is
142 getPackageDetails :: PackageState -> PackageId -> PackageConfig
143 getPackageDetails ps pid = expectJust "getPackageDetails" (lookupPackage (pkgIdMap ps) pid)
145 -- ----------------------------------------------------------------------------
146 -- Loading the package config files and building up the package state
148 -- | Call this after 'DynFlags.parseDynFlags'. It reads the package
149 -- configuration files, and sets up various internal tables of package
150 -- information, according to the package-related flags on the
151 -- command-line (@-package@, @-hide-package@ etc.)
153 -- Returns a list of packages to link in if we're doing dynamic linking.
154 -- This list contains the packages that the user explicitly mentioned with
157 -- 'initPackages' can be called again subsequently after updating the
158 -- 'packageFlags' field of the 'DynFlags', and it will update the
159 -- 'pkgState' in 'DynFlags' and return a list of packages to
161 initPackages :: DynFlags -> IO (DynFlags, [PackageId])
162 initPackages dflags = do
163 pkg_db <- case pkgDatabase dflags of
164 Nothing -> readPackageConfigs dflags
166 (pkg_state, preload, this_pkg)
167 <- mkPackageState dflags pkg_db [] (thisPackage dflags)
168 return (dflags{ pkgDatabase = Just pkg_db,
169 pkgState = pkg_state,
170 thisPackage = this_pkg },
173 -- -----------------------------------------------------------------------------
174 -- Reading the package database(s)
176 readPackageConfigs :: DynFlags -> IO PackageConfigMap
177 readPackageConfigs dflags = do
178 e_pkg_path <- tryIO (getEnv "GHC_PACKAGE_PATH")
179 system_pkgconfs <- getSystemPackageConfigs dflags
181 let pkgconfs = case e_pkg_path of
182 Left _ -> system_pkgconfs
184 | last cs == "" -> init cs ++ system_pkgconfs
186 where cs = parseSearchPath path
187 -- if the path ends in a separator (eg. "/foo/bar:")
188 -- the we tack on the system paths.
190 -- Read all the ones mentioned in -package-conf flags
191 pkg_map <- foldM (readPackageConfig dflags) emptyPackageConfigMap
192 (reverse pkgconfs ++ extraPkgConfs dflags)
197 getSystemPackageConfigs :: DynFlags -> IO [FilePath]
198 getSystemPackageConfigs dflags = do
199 -- System one always comes first
200 let system_pkgconf = systemPackageConfig dflags
202 -- allow package.conf.d to contain a bunch of .conf files
203 -- containing package specifications. This is an easier way
204 -- to maintain the package database on systems with a package
205 -- management system, or systems that don't want to run ghc-pkg
206 -- to register or unregister packages. Undocumented feature for now.
207 let system_pkgconf_dir = system_pkgconf <.> "d"
208 system_pkgconf_dir_exists <- doesDirectoryExist system_pkgconf_dir
210 if system_pkgconf_dir_exists
211 then do files <- getDirectoryContents system_pkgconf_dir
212 return [ system_pkgconf_dir </> file
214 , takeExtension file == ".conf" ]
217 -- Read user's package conf (eg. ~/.ghc/i386-linux-6.3/package.conf)
218 -- unless the -no-user-package-conf flag was given.
219 -- We only do this when getAppUserDataDirectory is available
222 appdir <- getAppUserDataDirectory "ghc"
225 </> (TARGET_ARCH ++ '-':TARGET_OS ++ '-':cProjectVersion)
227 flg <- doesFileExist pkgconf
228 if (flg && dopt Opt_ReadUserPackageConf dflags)
229 then return [pkgconf]
231 `catchIO` (\_ -> return [])
233 return (user_pkgconf ++ system_pkgconfs ++ [system_pkgconf])
237 :: DynFlags -> PackageConfigMap -> FilePath -> IO PackageConfigMap
238 readPackageConfig dflags pkg_map conf_file = do
239 debugTraceMsg dflags 2 (text "Using package config file:" <+> text conf_file)
240 proto_pkg_configs <- loadPackageConfig dflags conf_file
241 let top_dir = topDir dflags
242 pkg_configs1 = mungePackagePaths top_dir proto_pkg_configs
243 pkg_configs2 = maybeHidePackages dflags pkg_configs1
244 return (extendPackageConfigMap pkg_map pkg_configs2)
246 maybeHidePackages :: DynFlags -> [PackageConfig] -> [PackageConfig]
247 maybeHidePackages dflags pkgs
248 | dopt Opt_HideAllPackages dflags = map hide pkgs
251 hide pkg = pkg{ exposed = False }
253 mungePackagePaths :: String -> [PackageConfig] -> [PackageConfig]
254 -- Replace the string "$topdir" at the beginning of a path
255 -- with the current topdir (obtained from the -B option).
256 mungePackagePaths top_dir ps = map munge_pkg ps
258 munge_pkg p = p{ importDirs = munge_paths (importDirs p),
259 includeDirs = munge_paths (includeDirs p),
260 libraryDirs = munge_paths (libraryDirs p),
261 frameworkDirs = munge_paths (frameworkDirs p),
262 haddockInterfaces = munge_paths (haddockInterfaces p),
263 haddockHTMLs = munge_paths (haddockHTMLs p)
266 munge_paths = map munge_path
269 | Just p' <- maybePrefixMatch "$topdir" p = top_dir ++ p'
270 | Just p' <- maybePrefixMatch "$httptopdir" p = toHttpPath top_dir ++ p'
273 toHttpPath p = "file:///" ++ p
276 -- -----------------------------------------------------------------------------
277 -- Modify our copy of the package database based on a package flag
278 -- (-package, -hide-package, -ignore-package).
281 :: [PackageConfig] -- Initial database
282 -> PackageFlag -- flag to apply
283 -> IO [PackageConfig] -- new database
285 applyPackageFlag pkgs flag =
288 case matchingPackages str pkgs of
289 Nothing -> missingPackageErr str
290 Just ([], _) -> panic "applyPackageFlag"
291 Just (p:ps,qs) -> return (p':ps')
292 where p' = p {exposed=True}
293 ps' = hideAll (pkgName (package p)) (ps++qs)
296 case matchingPackages str pkgs of
297 Nothing -> missingPackageErr str
298 Just (ps,qs) -> return (map hide ps ++ qs)
299 where hide p = p {exposed=False}
302 case matchingPackages str pkgs of
303 Nothing -> return pkgs
304 Just (_, qs) -> return qs
305 -- missing package is not an error for -ignore-package,
306 -- because a common usage is to -ignore-package P as
307 -- a preventative measure just in case P exists.
309 -- When a package is requested to be exposed, we hide all other
310 -- packages with the same name.
311 hideAll name ps = map maybe_hide ps
312 where maybe_hide p | pkgName (package p) == name = p {exposed=False}
316 matchingPackages :: String -> [PackageConfig]
317 -> Maybe ([PackageConfig], [PackageConfig])
318 matchingPackages str pkgs
319 = case partition (packageMatches str) pkgs of
321 (ps,rest) -> Just (sortByVersion ps, rest)
323 -- A package named on the command line can either include the
324 -- version, or just the name if it is unambiguous.
325 packageMatches :: String -> PackageConfig -> Bool
327 = str == display (package p)
328 || str == display (pkgName (package p))
330 pickPackages :: [PackageConfig] -> [String] -> [PackageConfig]
331 pickPackages pkgs strs =
332 [ p | p <- strs, Just (p:_, _) <- [matchingPackages p pkgs] ]
334 sortByVersion :: [InstalledPackageInfo_ m] -> [InstalledPackageInfo_ m]
335 sortByVersion = sortBy (flip (comparing (pkgVersion.package)))
337 comparing :: Ord a => (t -> a) -> t -> t -> Ordering
338 comparing f a b = f a `compare` f b
340 -- -----------------------------------------------------------------------------
341 -- Hide old versions of packages
344 -- hide all packages for which there is also a later version
345 -- that is already exposed. This just makes it non-fatal to have two
346 -- versions of a package exposed, which can happen if you install a
347 -- later version of a package in the user database, for example.
349 hideOldPackages :: DynFlags -> [PackageConfig] -> IO [PackageConfig]
350 hideOldPackages dflags pkgs = mapM maybe_hide pkgs
352 | not (exposed p) = return p
353 | (p' : _) <- later_versions = do
354 debugTraceMsg dflags 2 $
355 (ptext (sLit "hiding package") <+>
356 text (display (package p)) <+>
357 ptext (sLit "to avoid conflict with later version") <+>
358 text (display (package p')))
359 return (p {exposed=False})
360 | otherwise = return p
361 where myname = pkgName (package p)
362 myversion = pkgVersion (package p)
363 later_versions = [ p | p <- pkgs, exposed p,
365 pkgName pkg == myname,
366 pkgVersion pkg > myversion ]
368 -- -----------------------------------------------------------------------------
373 -> [PackageConfig] -- database
374 -> [PackageIdentifier] -- preload packages
375 -> PackageId -- this package
376 -> IO ([PackageConfig],
380 findWiredInPackages dflags pkgs preload this_package = do
382 -- Now we must find our wired-in packages, and rename them to
383 -- their canonical names (eg. base-1.0 ==> base).
386 wired_in_pkgids :: [(PackageId, [String])]
387 wired_in_pkgids = [ (primPackageId, [""]),
388 (integerPackageId, [""]),
389 (basePackageId, [""]),
390 (rtsPackageId, [""]),
391 (haskell98PackageId, [""]),
393 (dphSeqPackageId, [""]),
394 (dphParPackageId, [""]),
395 (ndpPackageId, ["-seq", "-par"]) ]
397 matches :: PackageConfig -> (PackageId, [String]) -> Bool
398 pc `matches` (pid, suffixes)
399 = display (pkgName (package pc)) `elem`
400 (map (packageIdString pid ++) suffixes)
402 -- find which package corresponds to each wired-in package
403 -- delete any other packages with the same name
404 -- update the package and any dependencies to point to the new
407 -- When choosing which package to map to a wired-in package
408 -- name, we prefer exposed packages, and pick the latest
409 -- version. To override the default choice, -hide-package
410 -- could be used to hide newer versions.
412 findWiredInPackage :: [PackageConfig] -> (PackageId, [String])
413 -> IO (Maybe (PackageIdentifier, PackageId))
414 findWiredInPackage pkgs wired_pkg =
415 let all_ps = [ p | p <- pkgs, p `matches` wired_pkg ] in
418 many -> pick (head (sortByVersion many))
420 suffixes = snd wired_pkg
422 debugTraceMsg dflags 2 $
423 ptext (sLit "wired-in package ")
424 <> ppr (fst wired_pkg)
427 else text (show suffixes))
428 <> ptext (sLit " not found.")
430 pick :: InstalledPackageInfo_ ModuleName
431 -> IO (Maybe (PackageIdentifier, PackageId))
433 debugTraceMsg dflags 2 $
434 ptext (sLit "wired-in package ")
435 <> ppr (fst wired_pkg)
436 <> ptext (sLit " mapped to ")
437 <> text (display (package pkg))
438 return (Just (package pkg, fst wired_pkg))
441 mb_wired_in_ids <- mapM (findWiredInPackage pkgs) wired_in_pkgids
443 wired_in_ids = catMaybes mb_wired_in_ids
445 -- this is old: we used to assume that if there were
446 -- multiple versions of wired-in packages installed that
447 -- they were mutually exclusive. Now we're assuming that
448 -- you have one "main" version of each wired-in package
449 -- (the latest version), and the others are backward-compat
450 -- wrappers that depend on this one. e.g. base-4.0 is the
451 -- latest, base-3.0 is a compat wrapper depending on base-4.0.
453 deleteOtherWiredInPackages pkgs = filterOut bad pkgs
454 where bad p = any (p `matches`) wired_in_pkgids
455 && package p `notElem` map fst wired_in_ids
458 updateWiredInDependencies pkgs = map upd_pkg pkgs
459 where upd_pkg p = p{ package = upd_pid (package p),
460 depends = map upd_pid (depends p) }
462 upd_pid pid = case filter ((== pid) . fst) wired_in_ids of
464 ((x, y):_) -> x{ pkgName = PackageName (packageIdString y),
465 pkgVersion = Version [] [] }
467 -- pkgs1 = deleteOtherWiredInPackages pkgs
469 pkgs2 = updateWiredInDependencies pkgs
471 preload1 = map upd_pid preload
473 -- we must return an updated thisPackage, just in case we
474 -- are actually compiling one of the wired-in packages
475 Just old_this_pkg = unpackPackageId this_package
476 new_this_pkg = mkPackageId (upd_pid old_this_pkg)
478 return (pkgs2, preload1, new_this_pkg)
480 -- ----------------------------------------------------------------------------
482 -- Detect any packages that have missing dependencies, and also any
483 -- mutually-recursive groups of packages (loops in the package graph
484 -- are not allowed). We do this by taking the least fixpoint of the
485 -- dependency graph, repeatedly adding packages whose dependencies are
486 -- satisfied until no more can be added.
491 -> [PackageId] -- ignored packages
492 -> IO [PackageConfig]
494 elimDanglingDeps dflags pkgs ignored = go [] pkgs'
496 pkgs' = filter (\p -> packageConfigId p `notElem` ignored) pkgs
499 case partitionWith (depsAvailable avail) not_avail of
500 ([], not_avail) -> do mapM_ reportElim not_avail; return avail
501 (new_avail, not_avail) -> go (new_avail ++ avail) (map fst not_avail)
503 depsAvailable :: [PackageConfig] -> PackageConfig
504 -> Either PackageConfig (PackageConfig, [PackageIdentifier])
505 depsAvailable pkgs_ok pkg
506 | null dangling = Left pkg
507 | otherwise = Right (pkg, dangling)
508 where dangling = filter (`notElem` pids) (depends pkg)
509 pids = map package pkgs_ok
511 reportElim (p, deps) =
512 debugTraceMsg dflags 2 $
513 (ptext (sLit "package") <+> pprPkg p <+>
514 ptext (sLit "will be ignored due to missing or recursive dependencies:") $$
515 nest 2 (hsep (map (text.display) deps)))
517 -- -----------------------------------------------------------------------------
518 -- When all the command-line options are in, we can process our package
519 -- settings and populate the package state.
523 -> PackageConfigMap -- initial database
524 -> [PackageId] -- preloaded packages
525 -> PackageId -- this package
527 [PackageId], -- new packages to preload
528 PackageId) -- this package, might be modified if the current
530 -- package is a wired-in package.
532 mkPackageState dflags orig_pkg_db preload0 this_package = do
534 -- Modify the package database according to the command-line flags
535 -- (-package, -hide-package, -ignore-package, -hide-all-packages).
537 let flags = reverse (packageFlags dflags)
538 let pkgs0 = eltsUFM orig_pkg_db
539 pkgs1 <- foldM applyPackageFlag pkgs0 flags
541 -- Here we build up a set of the packages mentioned in -package
542 -- flags on the command line; these are called the "preload"
543 -- packages. we link these packages in eagerly. The preload set
544 -- should contain at least rts & base, which is why we pretend that
545 -- the command line contains -package rts & -package base.
547 let new_preload_packages =
548 map package (pickPackages pkgs0 [ p | ExposePackage p <- flags ])
550 -- hide packages that are subsumed by later versions
551 pkgs2 <- hideOldPackages dflags pkgs1
553 -- sort out which packages are wired in
554 (pkgs3, preload1, new_this_pkg)
555 <- findWiredInPackages dflags pkgs2 new_preload_packages this_package
557 let ignored = map packageConfigId $
558 pickPackages pkgs0 [ p | IgnorePackage p <- flags ]
559 pkgs <- elimDanglingDeps dflags pkgs3 ignored
561 let pkg_db = extendPackageConfigMap emptyPackageConfigMap pkgs
563 -- add base & rts to the preload packages
565 | dopt Opt_AutoLinkPackages dflags
566 = filter (flip elemUFM pkg_db) [basePackageId, rtsPackageId]
568 -- but in any case remove the current package from the set of
569 -- preloaded packages so that base/rts does not end up in the
570 -- set up preloaded package when we are just building it
571 preload2 = nub (filter (/= new_this_pkg)
572 (basicLinkedPackages ++ map mkPackageId preload1))
574 -- Close the preload packages with their dependencies
575 dep_preload <- closeDeps pkg_db (zip preload2 (repeat Nothing))
576 let new_dep_preload = filter (`notElem` preload0) dep_preload
578 let pstate = PackageState{ preloadPackages = dep_preload,
580 moduleToPkgConfAll = mkModuleMap pkg_db
583 return (pstate, new_dep_preload, new_this_pkg)
586 -- -----------------------------------------------------------------------------
587 -- Make the mapping from module to package info
591 -> UniqFM [(PackageConfig, Bool)]
592 mkModuleMap pkg_db = foldr extend_modmap emptyUFM pkgids
594 pkgids = map packageConfigId (eltsUFM pkg_db)
596 extend_modmap pkgid modmap =
597 addListToUFM_C (++) modmap
598 ([(m, [(pkg, True)]) | m <- exposed_mods] ++
599 [(m, [(pkg, False)]) | m <- hidden_mods])
601 pkg = expectJust "mkModuleMap" (lookupPackage pkg_db pkgid)
602 exposed_mods = exposedModules pkg
603 hidden_mods = hiddenModules pkg
605 pprPkg :: PackageConfig -> SDoc
606 pprPkg p = text (display (package p))
608 -- -----------------------------------------------------------------------------
609 -- Extracting information from the packages in scope
611 -- Many of these functions take a list of packages: in those cases,
612 -- the list is expected to contain the "dependent packages",
613 -- i.e. those packages that were found to be depended on by the
614 -- current module/program. These can be auto or non-auto packages, it
615 -- doesn't really matter. The list is always combined with the list
616 -- of preload (command-line) packages to determine which packages to
619 -- | Find all the include directories in these and the preload packages
620 getPackageIncludePath :: DynFlags -> [PackageId] -> IO [String]
621 getPackageIncludePath dflags pkgs =
622 collectIncludeDirs `fmap` getPreloadPackagesAnd dflags pkgs
624 collectIncludeDirs :: [PackageConfig] -> [FilePath]
625 collectIncludeDirs ps = nub (filter notNull (concatMap includeDirs ps))
627 -- | Find all the library paths in these and the preload packages
628 getPackageLibraryPath :: DynFlags -> [PackageId] -> IO [String]
629 getPackageLibraryPath dflags pkgs =
630 collectLibraryPaths `fmap` getPreloadPackagesAnd dflags pkgs
632 collectLibraryPaths :: [PackageConfig] -> [FilePath]
633 collectLibraryPaths ps = nub (filter notNull (concatMap libraryDirs ps))
635 -- | Find all the link options in these and the preload packages
636 getPackageLinkOpts :: DynFlags -> [PackageId] -> IO [String]
637 getPackageLinkOpts dflags pkgs =
638 collectLinkOpts dflags `fmap` getPreloadPackagesAnd dflags pkgs
640 collectLinkOpts :: DynFlags -> [PackageConfig] -> [String]
641 collectLinkOpts dflags ps = concat (map all_opts ps)
643 tag = buildTag dflags
644 rts_tag = rtsBuildTag dflags
646 mkDynName | opt_Static = id
647 | otherwise = (++ ("-ghc" ++ cProjectVersion))
648 libs p = map (mkDynName . addSuffix) (hsLibraries p)
650 all_opts p = map ("-l" ++) (libs p) ++ ldOptions p
652 addSuffix rts@"HSrts" = rts ++ (expandTag rts_tag)
653 addSuffix other_lib = other_lib ++ (expandTag tag)
655 expandTag t | null t = ""
658 -- | Find all the C-compiler options in these and the preload packages
659 getPackageExtraCcOpts :: DynFlags -> [PackageId] -> IO [String]
660 getPackageExtraCcOpts dflags pkgs = do
661 ps <- getPreloadPackagesAnd dflags pkgs
662 return (concatMap ccOptions ps)
664 -- | Find all the package framework paths in these and the preload packages
665 getPackageFrameworkPath :: DynFlags -> [PackageId] -> IO [String]
666 getPackageFrameworkPath dflags pkgs = do
667 ps <- getPreloadPackagesAnd dflags pkgs
668 return (nub (filter notNull (concatMap frameworkDirs ps)))
670 -- | Find all the package frameworks in these and the preload packages
671 getPackageFrameworks :: DynFlags -> [PackageId] -> IO [String]
672 getPackageFrameworks dflags pkgs = do
673 ps <- getPreloadPackagesAnd dflags pkgs
674 return (concatMap frameworks ps)
676 -- -----------------------------------------------------------------------------
679 -- | Takes a 'Module', and if the module is in a package returns
680 -- @(pkgconf, exposed)@ where pkgconf is the PackageConfig for that package,
681 -- and exposed is @True@ if the package exposes the module.
682 lookupModuleInAllPackages :: DynFlags -> ModuleName -> [(PackageConfig,Bool)]
683 lookupModuleInAllPackages dflags m =
684 case lookupUFM (moduleToPkgConfAll (pkgState dflags)) m of
688 -- | Find all the 'PackageConfig' in both the preload packages from 'DynFlags' and corresponding to the list of
690 getPreloadPackagesAnd :: DynFlags -> [PackageId] -> IO [PackageConfig]
691 getPreloadPackagesAnd dflags pkgids =
693 state = pkgState dflags
694 pkg_map = pkgIdMap state
695 preload = preloadPackages state
696 pairs = zip pkgids (repeat Nothing)
698 all_pkgs <- throwErr (foldM (add_package pkg_map) preload pairs)
699 return (map (getPackageDetails state) all_pkgs)
701 -- Takes a list of packages, and returns the list with dependencies included,
702 -- in reverse dependency order (a package appears before those it depends on).
703 closeDeps :: PackageConfigMap -> [(PackageId, Maybe PackageId)]
705 closeDeps pkg_map ps = throwErr (closeDepsErr pkg_map ps)
707 throwErr :: MaybeErr Message a -> IO a
708 throwErr m = case m of
709 Failed e -> ghcError (CmdLineError (showSDoc e))
710 Succeeded r -> return r
712 closeDepsErr :: PackageConfigMap -> [(PackageId,Maybe PackageId)]
713 -> MaybeErr Message [PackageId]
714 closeDepsErr pkg_map ps = foldM (add_package pkg_map) [] ps
717 add_package :: PackageConfigMap -> [PackageId] -> (PackageId,Maybe PackageId)
718 -> MaybeErr Message [PackageId]
719 add_package pkg_db ps (p, mb_parent)
720 | p `elem` ps = return ps -- Check if we've already added this package
722 case lookupPackage pkg_db p of
723 Nothing -> Failed (missingPackageMsg (packageIdString p) <>
724 missingDependencyMsg mb_parent)
726 -- Add the package's dependents also
727 let deps = map mkPackageId (depends pkg)
728 ps' <- foldM (add_package pkg_db) ps (zip deps (repeat (Just p)))
731 missingPackageErr :: String -> IO [PackageConfig]
732 missingPackageErr p = ghcError (CmdLineError (showSDoc (missingPackageMsg p)))
734 missingPackageMsg :: String -> SDoc
735 missingPackageMsg p = ptext (sLit "unknown package:") <+> text p
737 missingDependencyMsg :: Maybe PackageId -> SDoc
738 missingDependencyMsg Nothing = empty
739 missingDependencyMsg (Just parent)
740 = space <> parens (ptext (sLit "dependency of") <+> ftext (packageIdFS parent))
742 -- -----------------------------------------------------------------------------
744 -- | Will the 'Name' come from a dynamically linked library?
745 isDllName :: PackageId -> Name -> Bool
746 isDllName this_pkg name
748 | Just mod <- nameModule_maybe name = modulePackageId mod /= this_pkg
749 | otherwise = False -- no, it is not even an external name
751 -- -----------------------------------------------------------------------------
752 -- Displaying packages
754 -- | Show package info on console, if verbosity is >= 3
755 dumpPackages :: DynFlags -> IO ()
757 = do let pkg_map = pkgIdMap (pkgState dflags)
759 vcat (map (text . showInstalledPackageInfo
760 . packageConfigToInstalledPackageInfo)