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,
23 getPackageLibraryPath,
25 getPackageExtraCcOpts,
26 getPackageFrameworkPath,
28 getPreloadPackagesAnd,
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 #if __GLASGOW_HASKELL__ < 603
51 import Compat.Directory ( getAppUserDataDirectory )
54 import System.Environment ( getEnv )
55 import Distribution.InstalledPackageInfo
56 import Distribution.Package
57 import Distribution.Version
59 import ErrUtils ( debugTraceMsg, putMsg, Message )
61 import System.Directory
65 import Control.Exception ( throwDyn )
67 -- ---------------------------------------------------------------------------
70 -- Package state is all stored in DynFlags, including the details of
71 -- all packages, which packages are exposed, and which modules they
74 -- The package state is computed by initPackages, and kept in DynFlags.
76 -- * -package <pkg> causes <pkg> to become exposed, and all other packages
77 -- with the same name to become hidden.
79 -- * -hide-package <pkg> causes <pkg> to become hidden.
81 -- * Let exposedPackages be the set of packages thus exposed.
82 -- Let depExposedPackages be the transitive closure from exposedPackages of
83 -- their dependencies.
85 -- * When searching for a module from an preload import declaration,
86 -- only the exposed modules in exposedPackages are valid.
88 -- * When searching for a module from an implicit import, all modules
89 -- from depExposedPackages are valid.
91 -- * When linking in a comp manager mode, we link in packages the
92 -- program depends on (the compiler knows this list by the
93 -- time it gets to the link step). Also, we link in all packages
94 -- which were mentioned with preload -package flags on the command-line,
95 -- or are a transitive dependency of same, or are "base"/"rts".
96 -- The reason for (b) is that we might need packages which don't
97 -- contain any Haskell modules, and therefore won't be discovered
98 -- by the normal mechanism of dependency tracking.
102 -- When compiling module A, which imports module B, we need to
103 -- know whether B will be in the same DLL as A.
104 -- If it's in the same DLL, we refer to B_f_closure
105 -- If it isn't, we refer to _imp__B_f_closure
106 -- When compiling A, we record in B's Module value whether it's
107 -- in a different DLL, by setting the DLL flag.
109 data PackageState = PackageState {
110 pkgIdMap :: PackageConfigMap, -- PackageId -> PackageConfig
111 -- The exposed flags are adjusted according to -package and
112 -- -hide-package flags, and -ignore-package removes packages.
114 preloadPackages :: [PackageId],
115 -- The packages we're going to link in eagerly. This list
116 -- should be in reverse dependency order; that is, a package
117 -- is always mentioned before the packages it depends on.
119 moduleToPkgConfAll :: UniqFM [(PackageConfig,Bool)] -- ModuleEnv mapping
120 -- Derived from pkgIdMap.
121 -- Maps Module to (pkgconf,exposed), where pkgconf is the
122 -- PackageConfig for the package containing the module, and
123 -- exposed is True if the package exposes that module.
126 -- A PackageConfigMap maps a PackageId to a PackageConfig
127 type PackageConfigMap = UniqFM PackageConfig
129 emptyPackageConfigMap :: PackageConfigMap
130 emptyPackageConfigMap = emptyUFM
132 lookupPackage :: PackageConfigMap -> PackageId -> Maybe PackageConfig
133 lookupPackage = lookupUFM
135 extendPackageConfigMap
136 :: PackageConfigMap -> [PackageConfig] -> PackageConfigMap
137 extendPackageConfigMap pkg_map new_pkgs
138 = foldl add pkg_map new_pkgs
139 where add pkg_map p = addToUFM pkg_map (packageConfigId p) p
141 getPackageDetails :: PackageState -> PackageId -> PackageConfig
142 getPackageDetails dflags ps = expectJust "getPackageDetails" (lookupPackage (pkgIdMap dflags) ps)
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 -- 'packageState' 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 <- try (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 , isSuffixOf ".conf" file]
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
220 user_pkgconf <- handle (\_ -> return []) $ do
221 appdir <- getAppUserDataDirectory "ghc"
224 `joinFileName` (TARGET_ARCH ++ '-':TARGET_OS ++ '-':cProjectVersion)
225 `joinFileName` "package.conf"
226 flg <- doesFileExist pkgconf
227 if (flg && dopt Opt_ReadUserPackageConf dflags)
228 then return [pkgconf]
231 return (user_pkgconf ++ system_pkgconfs ++ [system_pkgconf])
235 :: DynFlags -> PackageConfigMap -> FilePath -> IO PackageConfigMap
236 readPackageConfig dflags pkg_map conf_file = do
237 debugTraceMsg dflags 2 (text "Using package config file:" <+> text conf_file)
238 proto_pkg_configs <- loadPackageConfig conf_file
239 let top_dir = topDir dflags
240 pkg_configs1 = mungePackagePaths top_dir proto_pkg_configs
241 pkg_configs2 = maybeHidePackages dflags pkg_configs1
242 return (extendPackageConfigMap pkg_map pkg_configs2)
244 maybeHidePackages :: DynFlags -> [PackageConfig] -> [PackageConfig]
245 maybeHidePackages dflags pkgs
246 | dopt Opt_HideAllPackages dflags = map hide pkgs
249 hide pkg = pkg{ exposed = False }
251 mungePackagePaths :: String -> [PackageConfig] -> [PackageConfig]
252 -- Replace the string "$topdir" at the beginning of a path
253 -- with the current topdir (obtained from the -B option).
254 mungePackagePaths top_dir ps = map munge_pkg ps
256 munge_pkg p = p{ importDirs = munge_paths (importDirs p),
257 includeDirs = munge_paths (includeDirs p),
258 libraryDirs = munge_paths (libraryDirs p),
259 frameworkDirs = munge_paths (frameworkDirs p) }
261 munge_paths = map munge_path
264 | Just p' <- maybePrefixMatch "$topdir" p = top_dir ++ p'
268 -- -----------------------------------------------------------------------------
269 -- Modify our copy of the package database based on a package flag
270 -- (-package, -hide-package, -ignore-package).
273 :: [PackageConfig] -- Initial database
274 -> PackageFlag -- flag to apply
275 -> IO [PackageConfig] -- new database
277 applyPackageFlag pkgs flag =
280 case matchingPackages str pkgs of
281 Nothing -> missingPackageErr str
282 Just (p:ps,qs) -> return (p':ps')
283 where p' = p {exposed=True}
284 ps' = hideAll (pkgName (package p)) (ps++qs)
287 case matchingPackages str pkgs of
288 Nothing -> missingPackageErr str
289 Just (ps,qs) -> return (map hide ps ++ qs)
290 where hide p = p {exposed=False}
293 case matchingPackages str pkgs of
294 Nothing -> return pkgs
295 Just (ps,qs) -> return qs
296 -- missing package is not an error for -ignore-package,
297 -- because a common usage is to -ignore-package P as
298 -- a preventative measure just in case P exists.
300 -- When a package is requested to be exposed, we hide all other
301 -- packages with the same name.
302 hideAll name ps = map maybe_hide ps
303 where maybe_hide p | pkgName (package p) == name = p {exposed=False}
307 matchingPackages :: String -> [PackageConfig]
308 -> Maybe ([PackageConfig], [PackageConfig])
309 matchingPackages str pkgs
310 = case partition (matches str) pkgs of
312 (ps,rest) -> Just (sortByVersion ps, rest)
314 -- A package named on the command line can either include the
315 -- version, or just the name if it is unambiguous.
317 = str == showPackageId (package p)
318 || str == pkgName (package p)
321 pickPackages pkgs strs =
322 [ p | p <- strs, Just (p:ps,_) <- [matchingPackages p pkgs] ]
324 sortByVersion = sortBy (flip (comparing (pkgVersion.package)))
325 comparing f a b = f a `compare` f b
327 -- -----------------------------------------------------------------------------
328 -- Hide old versions of packages
331 -- hide all packages for which there is also a later version
332 -- that is already exposed. This just makes it non-fatal to have two
333 -- versions of a package exposed, which can happen if you install a
334 -- later version of a package in the user database, for example.
336 hideOldPackages :: DynFlags -> [PackageConfig] -> IO [PackageConfig]
337 hideOldPackages dflags pkgs = mapM maybe_hide pkgs
339 | not (exposed p) = return p
340 | (p' : _) <- later_versions = do
341 debugTraceMsg dflags 2 $
342 (ptext SLIT("hiding package") <+>
343 text (showPackageId (package p)) <+>
344 ptext SLIT("to avoid conflict with later version") <+>
345 text (showPackageId (package p')))
346 return (p {exposed=False})
347 | otherwise = return p
348 where myname = pkgName (package p)
349 myversion = pkgVersion (package p)
350 later_versions = [ p | p <- pkgs, exposed p,
352 pkgName pkg == myname,
353 pkgVersion pkg > myversion ]
355 -- -----------------------------------------------------------------------------
360 -> [PackageConfig] -- database
361 -> [PackageIdentifier] -- preload packages
362 -> PackageId -- this package
363 -> IO ([PackageConfig],
367 findWiredInPackages dflags pkgs preload this_package = do
369 -- Now we must find our wired-in packages, and rename them to
370 -- their canonical names (eg. base-1.0 ==> base).
373 wired_in_pkgids = [ basePackageId,
378 wired_in_names = map packageIdString wired_in_pkgids
380 -- find which package corresponds to each wired-in package
381 -- delete any other packages with the same name
382 -- update the package and any dependencies to point to the new
385 -- When choosing which package to map to a wired-in package
386 -- name, we prefer exposed packages, and pick the latest
387 -- version. To override the default choice, -hide-package
388 -- could be used to hide newer versions.
390 findWiredInPackage :: [PackageConfig] -> String
391 -> IO (Maybe PackageIdentifier)
392 findWiredInPackage pkgs wired_pkg =
393 let all_ps = [ p | p <- pkgs, pkgName (package p) == wired_pkg ] in
394 case filter exposed all_ps of
397 many -> pick (head (sortByVersion many))
398 many -> pick (head (sortByVersion many))
401 debugTraceMsg dflags 2 $
402 ptext SLIT("wired-in package ")
404 <> ptext SLIT(" not found.")
407 debugTraceMsg dflags 2 $
408 ptext SLIT("wired-in package ")
410 <> ptext SLIT(" mapped to ")
411 <> text (showPackageId (package pkg))
412 return (Just (package pkg))
415 mb_wired_in_ids <- mapM (findWiredInPackage pkgs) wired_in_names
417 wired_in_ids = catMaybes mb_wired_in_ids
419 deleteOtherWiredInPackages pkgs = filter ok pkgs
420 where ok p = pkgName (package p) `notElem` wired_in_names
421 || package p `elem` wired_in_ids
423 updateWiredInDependencies pkgs = map upd_pkg pkgs
424 where upd_pkg p = p{ package = upd_pid (package p),
425 depends = map upd_pid (depends p) }
427 upd_pid pid = case filter (== pid) wired_in_ids of
429 (x:_) -> x{ pkgVersion = Version [] [] }
431 pkgs1 = deleteOtherWiredInPackages pkgs
433 pkgs2 = updateWiredInDependencies pkgs1
435 preload1 = map upd_pid preload
437 -- we must return an updated thisPackage, just in case we
438 -- are actually compiling one of the wired-in packages
439 Just old_this_pkg = unpackPackageId this_package
440 new_this_pkg = mkPackageId (upd_pid old_this_pkg)
442 return (pkgs2, preload1, new_this_pkg)
444 -- -----------------------------------------------------------------------------
446 -- Eliminate any packages which have dangling dependencies (
447 -- because the dependency was removed by -ignore-package).
452 -> [PackageId] -- ignored packages
453 -> IO [PackageConfig]
455 elimDanglingDeps dflags pkgs ignored =
456 case partition (not.null.snd) (map (getDanglingDeps pkgs ignored) pkgs) of
457 ([],ps) -> return (map fst ps)
460 elimDanglingDeps dflags (map fst qs)
461 (ignored ++ map packageConfigId (map fst ps))
463 reportElim (p, deps) =
464 debugTraceMsg dflags 2 $
465 (ptext SLIT("package") <+> pprPkg p <+>
466 ptext SLIT("will be ignored due to missing dependencies:") $$
467 nest 2 (hsep (map (text.showPackageId) deps)))
469 getDanglingDeps pkgs ignored p = (p, filter dangling (depends p))
470 where dangling pid = mkPackageId pid `elem` ignored
472 -- -----------------------------------------------------------------------------
473 -- When all the command-line options are in, we can process our package
474 -- settings and populate the package state.
478 -> PackageConfigMap -- initial database
479 -> [PackageId] -- preloaded packages
480 -> PackageId -- this package
482 [PackageId], -- new packages to preload
483 PackageId) -- this package, might be modified if the current
485 -- package is a wired-in package.
487 mkPackageState dflags orig_pkg_db preload0 this_package = do
489 -- Modify the package database according to the command-line flags
490 -- (-package, -hide-package, -ignore-package, -hide-all-packages).
492 let flags = reverse (packageFlags dflags)
493 let pkgs0 = eltsUFM orig_pkg_db
494 pkgs1 <- foldM applyPackageFlag pkgs0 flags
496 -- Here we build up a set of the packages mentioned in -package
497 -- flags on the command line; these are called the "preload"
498 -- packages. we link these packages in eagerly. The preload set
499 -- should contain at least rts & base, which is why we pretend that
500 -- the command line contains -package rts & -package base.
502 let new_preload_packages =
503 map package (pickPackages pkgs0 [ p | ExposePackage p <- flags ])
505 -- hide packages that are subsumed by later versions
506 pkgs2 <- hideOldPackages dflags pkgs1
508 -- sort out which packages are wired in
509 (pkgs3, preload1, new_this_pkg)
510 <- findWiredInPackages dflags pkgs2 new_preload_packages this_package
512 let ignored = map packageConfigId $
513 pickPackages pkgs0 [ p | IgnorePackage p <- flags ]
514 pkgs <- elimDanglingDeps dflags pkgs3 ignored
516 let pkg_db = extendPackageConfigMap emptyPackageConfigMap pkgs
517 pkgids = map packageConfigId pkgs
519 -- add base & rts to the preload packages
520 basicLinkedPackages = filter (flip elemUFM pkg_db)
521 [basePackageId,rtsPackageId]
522 preload2 = nub (basicLinkedPackages ++ map mkPackageId preload1)
524 -- Close the preload packages with their dependencies
525 dep_preload <- closeDeps pkg_db (zip preload2 (repeat Nothing))
526 let new_dep_preload = filter (`notElem` preload0) dep_preload
528 let pstate = PackageState{ preloadPackages = dep_preload,
530 moduleToPkgConfAll = mkModuleMap pkg_db
533 return (pstate, new_dep_preload, new_this_pkg)
536 -- -----------------------------------------------------------------------------
537 -- Make the mapping from module to package info
541 -> UniqFM [(PackageConfig, Bool)]
542 mkModuleMap pkg_db = foldr extend_modmap emptyUFM pkgids
544 pkgids = map packageConfigId (eltsUFM pkg_db)
546 extend_modmap pkgid modmap =
547 addListToUFM_C (++) modmap
548 [(m, [(pkg, m `elem` exposed_mods)]) | m <- all_mods]
550 pkg = expectJust "mkModuleMap" (lookupPackage pkg_db pkgid)
551 exposed_mods = map mkModuleName (exposedModules pkg)
552 hidden_mods = map mkModuleName (hiddenModules pkg)
553 all_mods = exposed_mods ++ hidden_mods
555 pprPkg :: PackageConfig -> SDoc
556 pprPkg p = text (showPackageId (package p))
558 -- -----------------------------------------------------------------------------
559 -- Extracting information from the packages in scope
561 -- Many of these functions take a list of packages: in those cases,
562 -- the list is expected to contain the "dependent packages",
563 -- i.e. those packages that were found to be depended on by the
564 -- current module/program. These can be auto or non-auto packages, it
565 -- doesn't really matter. The list is always combined with the list
566 -- of preload (command-line) packages to determine which packages to
569 getPackageIncludePath :: DynFlags -> [PackageId] -> IO [String]
570 getPackageIncludePath dflags pkgs = do
571 ps <- getPreloadPackagesAnd dflags pkgs
572 return (nub (filter notNull (concatMap includeDirs ps)))
574 -- includes are in reverse dependency order (i.e. rts first)
575 getPackageCIncludes :: [PackageConfig] -> IO [String]
576 getPackageCIncludes pkg_configs = do
577 return (reverse (nub (filter notNull (concatMap includes pkg_configs))))
579 getPackageLibraryPath :: DynFlags -> [PackageId] -> IO [String]
580 getPackageLibraryPath dflags pkgs = do
581 ps <- getPreloadPackagesAnd dflags pkgs
582 return (nub (filter notNull (concatMap libraryDirs ps)))
584 getPackageLinkOpts :: DynFlags -> [PackageId] -> IO [String]
585 getPackageLinkOpts dflags pkgs = do
586 ps <- getPreloadPackagesAnd dflags pkgs
587 let tag = buildTag dflags
588 rts_tag = rtsBuildTag dflags
590 imp = if opt_Static then "" else "_dyn"
591 libs p = map ((++imp) . addSuffix) (hsLibraries p)
592 ++ hACK_dyn (extraLibraries p)
593 all_opts p = map ("-l" ++) (libs p) ++ ldOptions p
595 suffix = if null tag then "" else '_':tag
596 rts_suffix = if null rts_tag then "" else '_':rts_tag
598 addSuffix rts@"HSrts" = rts ++ rts_suffix
599 addSuffix other_lib = other_lib ++ suffix
601 -- This is a hack that's even more horrible (and hopefully more temporary)
602 -- than the one below [referring to previous splittage of HSbase into chunks
603 -- to work around GNU ld bug]. HSbase_cbits and friends require the _dyn suffix
604 -- for dynamic linking, but not _p or other 'way' suffix. So we just add
605 -- _dyn to extraLibraries if they already have a _cbits suffix.
608 where hack lib | not opt_Static && "_cbits" `isSuffixOf` lib = lib ++ "_dyn"
611 return (concat (map all_opts ps))
613 getPackageExtraCcOpts :: DynFlags -> [PackageId] -> IO [String]
614 getPackageExtraCcOpts dflags pkgs = do
615 ps <- getPreloadPackagesAnd dflags pkgs
616 return (concatMap ccOptions ps)
618 getPackageFrameworkPath :: DynFlags -> [PackageId] -> IO [String]
619 getPackageFrameworkPath dflags pkgs = do
620 ps <- getPreloadPackagesAnd dflags pkgs
621 return (nub (filter notNull (concatMap frameworkDirs ps)))
623 getPackageFrameworks :: DynFlags -> [PackageId] -> IO [String]
624 getPackageFrameworks dflags pkgs = do
625 ps <- getPreloadPackagesAnd dflags pkgs
626 return (concatMap frameworks ps)
628 -- -----------------------------------------------------------------------------
631 -- | Takes a Module, and if the module is in a package returns
632 -- @(pkgconf,exposed)@ where pkgconf is the PackageConfig for that package,
633 -- and exposed is True if the package exposes the module.
634 lookupModuleInAllPackages :: DynFlags -> ModuleName -> [(PackageConfig,Bool)]
635 lookupModuleInAllPackages dflags m =
636 case lookupUFM (moduleToPkgConfAll (pkgState dflags)) m of
640 getPreloadPackagesAnd :: DynFlags -> [PackageId] -> IO [PackageConfig]
641 getPreloadPackagesAnd dflags pkgids =
643 state = pkgState dflags
644 pkg_map = pkgIdMap state
645 preload = preloadPackages state
646 pairs = zip pkgids (repeat Nothing)
648 all_pkgs <- throwErr (foldM (add_package pkg_map) preload pairs)
649 return (map (getPackageDetails state) all_pkgs)
651 -- Takes a list of packages, and returns the list with dependencies included,
652 -- in reverse dependency order (a package appears before those it depends on).
653 closeDeps :: PackageConfigMap -> [(PackageId, Maybe PackageId)]
655 closeDeps pkg_map ps = throwErr (closeDepsErr pkg_map ps)
657 throwErr :: MaybeErr Message a -> IO a
658 throwErr m = case m of
659 Failed e -> throwDyn (CmdLineError (showSDoc e))
660 Succeeded r -> return r
662 closeDepsErr :: PackageConfigMap -> [(PackageId,Maybe PackageId)]
663 -> MaybeErr Message [PackageId]
664 closeDepsErr pkg_map ps = foldM (add_package pkg_map) [] ps
667 add_package :: PackageConfigMap -> [PackageId] -> (PackageId,Maybe PackageId)
668 -> MaybeErr Message [PackageId]
669 add_package pkg_db ps (p, mb_parent)
670 | p `elem` ps = return ps -- Check if we've already added this package
672 case lookupPackage pkg_db p of
673 Nothing -> Failed (missingPackageMsg (packageIdString p) <>
674 missingDependencyMsg mb_parent)
676 -- Add the package's dependents also
677 let deps = map mkPackageId (depends pkg)
678 ps' <- foldM (add_package pkg_db) ps (zip deps (repeat (Just p)))
681 missingPackageErr p = throwDyn (CmdLineError (showSDoc (missingPackageMsg p)))
682 missingPackageMsg p = ptext SLIT("unknown package:") <+> text p
684 missingDependencyMsg Nothing = empty
685 missingDependencyMsg (Just parent)
686 = space <> parens (ptext SLIT("dependency of") <+> ftext (packageIdFS parent))
688 -- -----------------------------------------------------------------------------
690 isDllName :: PackageId -> Name -> Bool
691 isDllName this_pkg name
693 | Just mod <- nameModule_maybe name = modulePackageId mod /= this_pkg
694 | otherwise = False -- no, it is not even an external name
696 -- -----------------------------------------------------------------------------
697 -- Displaying packages
699 dumpPackages :: DynFlags -> IO ()
700 -- Show package info on console, if verbosity is >= 3
702 = do let pkg_map = pkgIdMap (pkgState dflags)
704 vcat (map (text.showInstalledPackageInfo) (eltsUFM pkg_map))