2 % (c) The University of Glasgow, 2006
8 -- The above warning supression flag is a temporary kludge.
9 -- While working on this module you are encouraged to remove it and fix
10 -- any warnings in the module. See
11 -- http://hackage.haskell.org/trac/ghc/wiki/Commentary/CodingStyle#Warnings
17 -- * The PackageConfigMap
18 PackageConfigMap, emptyPackageConfigMap, lookupPackage,
19 extendPackageConfigMap, dumpPackages,
21 -- * Reading the package config, and processing cmdline args
25 lookupModuleInAllPackages,
27 -- * Inspecting the set of packages in scope
28 getPackageIncludePath,
30 getPackageLibraryPath,
32 getPackageExtraCcOpts,
33 getPackageFrameworkPath,
35 getPreloadPackagesAnd,
42 #include "HsVersions.h"
45 import ParsePkgConf ( loadPackageConfig )
46 import DynFlags ( dopt, DynFlag(..), DynFlags(..), PackageFlag(..) )
47 import StaticFlags ( opt_Static )
48 import Config ( cProjectVersion )
49 import Name ( Name, nameModule_maybe )
53 import Maybes ( expectJust, MaybeErr(..) )
57 #if __GLASGOW_HASKELL__ < 603
58 import Compat.Directory ( getAppUserDataDirectory )
61 import System.Environment ( getEnv )
62 import Distribution.InstalledPackageInfo
63 import Distribution.Package
64 import Distribution.Version
66 import ErrUtils ( debugTraceMsg, putMsg, Message )
68 import System.Directory
72 import Control.Exception ( throwDyn )
74 -- ---------------------------------------------------------------------------
77 -- Package state is all stored in DynFlags, including the details of
78 -- all packages, which packages are exposed, and which modules they
81 -- The package state is computed by initPackages, and kept in DynFlags.
83 -- * -package <pkg> causes <pkg> to become exposed, and all other packages
84 -- with the same name to become hidden.
86 -- * -hide-package <pkg> causes <pkg> to become hidden.
88 -- * Let exposedPackages be the set of packages thus exposed.
89 -- Let depExposedPackages be the transitive closure from exposedPackages of
90 -- their dependencies.
92 -- * When searching for a module from an preload import declaration,
93 -- only the exposed modules in exposedPackages are valid.
95 -- * When searching for a module from an implicit import, all modules
96 -- from depExposedPackages are valid.
98 -- * When linking in a comp manager mode, we link in packages the
99 -- program depends on (the compiler knows this list by the
100 -- time it gets to the link step). Also, we link in all packages
101 -- which were mentioned with preload -package flags on the command-line,
102 -- or are a transitive dependency of same, or are "base"/"rts".
103 -- The reason for (b) is that we might need packages which don't
104 -- contain any Haskell modules, and therefore won't be discovered
105 -- by the normal mechanism of dependency tracking.
109 -- When compiling module A, which imports module B, we need to
110 -- know whether B will be in the same DLL as A.
111 -- If it's in the same DLL, we refer to B_f_closure
112 -- If it isn't, we refer to _imp__B_f_closure
113 -- When compiling A, we record in B's Module value whether it's
114 -- in a different DLL, by setting the DLL flag.
116 data PackageState = PackageState {
117 pkgIdMap :: PackageConfigMap, -- PackageId -> PackageConfig
118 -- The exposed flags are adjusted according to -package and
119 -- -hide-package flags, and -ignore-package removes packages.
121 preloadPackages :: [PackageId],
122 -- The packages we're going to link in eagerly. This list
123 -- should be in reverse dependency order; that is, a package
124 -- is always mentioned before the packages it depends on.
126 moduleToPkgConfAll :: UniqFM [(PackageConfig,Bool)] -- ModuleEnv mapping
127 -- Derived from pkgIdMap.
128 -- Maps Module to (pkgconf,exposed), where pkgconf is the
129 -- PackageConfig for the package containing the module, and
130 -- exposed is True if the package exposes that module.
133 -- A PackageConfigMap maps a PackageId to a PackageConfig
134 type PackageConfigMap = UniqFM PackageConfig
136 emptyPackageConfigMap :: PackageConfigMap
137 emptyPackageConfigMap = emptyUFM
139 lookupPackage :: PackageConfigMap -> PackageId -> Maybe PackageConfig
140 lookupPackage = lookupUFM
142 extendPackageConfigMap
143 :: PackageConfigMap -> [PackageConfig] -> PackageConfigMap
144 extendPackageConfigMap pkg_map new_pkgs
145 = foldl add pkg_map new_pkgs
146 where add pkg_map p = addToUFM pkg_map (packageConfigId p) p
148 getPackageDetails :: PackageState -> PackageId -> PackageConfig
149 getPackageDetails dflags ps = expectJust "getPackageDetails" (lookupPackage (pkgIdMap dflags) ps)
151 -- ----------------------------------------------------------------------------
152 -- Loading the package config files and building up the package state
154 -- | Call this after 'DynFlags.parseDynFlags'. It reads the package
155 -- configuration files, and sets up various internal tables of package
156 -- information, according to the package-related flags on the
157 -- command-line (@-package@, @-hide-package@ etc.)
159 -- Returns a list of packages to link in if we're doing dynamic linking.
160 -- This list contains the packages that the user explicitly mentioned with
163 -- 'initPackages' can be called again subsequently after updating the
164 -- 'packageFlags' field of the 'DynFlags', and it will update the
165 -- 'packageState' in 'DynFlags' and return a list of packages to
167 initPackages :: DynFlags -> IO (DynFlags, [PackageId])
168 initPackages dflags = do
169 pkg_db <- case pkgDatabase dflags of
170 Nothing -> readPackageConfigs dflags
172 (pkg_state, preload, this_pkg)
173 <- mkPackageState dflags pkg_db [] (thisPackage dflags)
174 return (dflags{ pkgDatabase = Just pkg_db,
175 pkgState = pkg_state,
176 thisPackage = this_pkg },
179 -- -----------------------------------------------------------------------------
180 -- Reading the package database(s)
182 readPackageConfigs :: DynFlags -> IO PackageConfigMap
183 readPackageConfigs dflags = do
184 e_pkg_path <- try (getEnv "GHC_PACKAGE_PATH")
185 system_pkgconfs <- getSystemPackageConfigs dflags
187 let pkgconfs = case e_pkg_path of
188 Left _ -> system_pkgconfs
190 | last cs == "" -> init cs ++ system_pkgconfs
192 where cs = parseSearchPath path
193 -- if the path ends in a separator (eg. "/foo/bar:")
194 -- the we tack on the system paths.
196 -- Read all the ones mentioned in -package-conf flags
197 pkg_map <- foldM (readPackageConfig dflags) emptyPackageConfigMap
198 (reverse pkgconfs ++ extraPkgConfs dflags)
203 getSystemPackageConfigs :: DynFlags -> IO [FilePath]
204 getSystemPackageConfigs dflags = do
205 -- System one always comes first
206 let system_pkgconf = systemPackageConfig dflags
208 -- allow package.conf.d to contain a bunch of .conf files
209 -- containing package specifications. This is an easier way
210 -- to maintain the package database on systems with a package
211 -- management system, or systems that don't want to run ghc-pkg
212 -- to register or unregister packages. Undocumented feature for now.
213 let system_pkgconf_dir = system_pkgconf ++ ".d"
214 system_pkgconf_dir_exists <- doesDirectoryExist system_pkgconf_dir
216 if system_pkgconf_dir_exists
217 then do files <- getDirectoryContents system_pkgconf_dir
218 return [ system_pkgconf_dir ++ '/' : file
220 , isSuffixOf ".conf" file]
223 -- Read user's package conf (eg. ~/.ghc/i386-linux-6.3/package.conf)
224 -- unless the -no-user-package-conf flag was given.
225 -- We only do this when getAppUserDataDirectory is available
227 user_pkgconf <- handle (\_ -> return []) $ do
228 appdir <- getAppUserDataDirectory "ghc"
231 `joinFileName` (TARGET_ARCH ++ '-':TARGET_OS ++ '-':cProjectVersion)
232 `joinFileName` "package.conf"
233 flg <- doesFileExist pkgconf
234 if (flg && dopt Opt_ReadUserPackageConf dflags)
235 then return [pkgconf]
238 return (user_pkgconf ++ system_pkgconfs ++ [system_pkgconf])
242 :: DynFlags -> PackageConfigMap -> FilePath -> IO PackageConfigMap
243 readPackageConfig dflags pkg_map conf_file = do
244 debugTraceMsg dflags 2 (text "Using package config file:" <+> text conf_file)
245 proto_pkg_configs <- loadPackageConfig conf_file
246 let top_dir = topDir dflags
247 pkg_configs1 = mungePackagePaths top_dir proto_pkg_configs
248 pkg_configs2 = maybeHidePackages dflags pkg_configs1
249 return (extendPackageConfigMap pkg_map pkg_configs2)
251 maybeHidePackages :: DynFlags -> [PackageConfig] -> [PackageConfig]
252 maybeHidePackages dflags pkgs
253 | dopt Opt_HideAllPackages dflags = map hide pkgs
256 hide pkg = pkg{ exposed = False }
258 mungePackagePaths :: String -> [PackageConfig] -> [PackageConfig]
259 -- Replace the string "$topdir" at the beginning of a path
260 -- with the current topdir (obtained from the -B option).
261 mungePackagePaths top_dir ps = map munge_pkg ps
263 munge_pkg p = p{ importDirs = munge_paths (importDirs p),
264 includeDirs = munge_paths (includeDirs p),
265 libraryDirs = munge_paths (libraryDirs p),
266 frameworkDirs = munge_paths (frameworkDirs p) }
268 munge_paths = map munge_path
271 | Just p' <- maybePrefixMatch "$topdir" p = top_dir ++ p'
272 | Just p' <- maybePrefixMatch "$httptopdir" p = toHttpPath top_dir ++ p'
275 toHttpPath p = "file:///" ++ p
278 -- -----------------------------------------------------------------------------
279 -- Modify our copy of the package database based on a package flag
280 -- (-package, -hide-package, -ignore-package).
283 :: [PackageConfig] -- Initial database
284 -> PackageFlag -- flag to apply
285 -> IO [PackageConfig] -- new database
287 applyPackageFlag pkgs flag =
290 case matchingPackages str pkgs of
291 Nothing -> missingPackageErr str
292 Just (p:ps,qs) -> return (p':ps')
293 where p' = p {exposed=True}
294 ps' = hideAll (pkgName (package p)) (ps++qs)
297 case matchingPackages str pkgs of
298 Nothing -> missingPackageErr str
299 Just (ps,qs) -> return (map hide ps ++ qs)
300 where hide p = p {exposed=False}
303 case matchingPackages str pkgs of
304 Nothing -> return pkgs
305 Just (ps,qs) -> return qs
306 -- missing package is not an error for -ignore-package,
307 -- because a common usage is to -ignore-package P as
308 -- a preventative measure just in case P exists.
310 -- When a package is requested to be exposed, we hide all other
311 -- packages with the same name.
312 hideAll name ps = map maybe_hide ps
313 where maybe_hide p | pkgName (package p) == name = p {exposed=False}
317 matchingPackages :: String -> [PackageConfig]
318 -> Maybe ([PackageConfig], [PackageConfig])
319 matchingPackages str pkgs
320 = case partition (matches str) pkgs of
322 (ps,rest) -> Just (sortByVersion ps, rest)
324 -- A package named on the command line can either include the
325 -- version, or just the name if it is unambiguous.
327 = str == showPackageId (package p)
328 || str == pkgName (package p)
331 pickPackages pkgs strs =
332 [ p | p <- strs, Just (p:ps,_) <- [matchingPackages p pkgs] ]
334 sortByVersion = sortBy (flip (comparing (pkgVersion.package)))
335 comparing f a b = f a `compare` f b
337 -- -----------------------------------------------------------------------------
338 -- Hide old versions of packages
341 -- hide all packages for which there is also a later version
342 -- that is already exposed. This just makes it non-fatal to have two
343 -- versions of a package exposed, which can happen if you install a
344 -- later version of a package in the user database, for example.
346 hideOldPackages :: DynFlags -> [PackageConfig] -> IO [PackageConfig]
347 hideOldPackages dflags pkgs = mapM maybe_hide pkgs
349 | not (exposed p) = return p
350 | (p' : _) <- later_versions = do
351 debugTraceMsg dflags 2 $
352 (ptext SLIT("hiding package") <+>
353 text (showPackageId (package p)) <+>
354 ptext SLIT("to avoid conflict with later version") <+>
355 text (showPackageId (package p')))
356 return (p {exposed=False})
357 | otherwise = return p
358 where myname = pkgName (package p)
359 myversion = pkgVersion (package p)
360 later_versions = [ p | p <- pkgs, exposed p,
362 pkgName pkg == myname,
363 pkgVersion pkg > myversion ]
365 -- -----------------------------------------------------------------------------
370 -> [PackageConfig] -- database
371 -> [PackageIdentifier] -- preload packages
372 -> PackageId -- this package
373 -> IO ([PackageConfig],
377 findWiredInPackages dflags pkgs preload this_package = do
379 -- Now we must find our wired-in packages, and rename them to
380 -- their canonical names (eg. base-1.0 ==> base).
383 wired_in_pkgids = [ basePackageId,
389 wired_in_names = map packageIdString wired_in_pkgids
391 -- find which package corresponds to each wired-in package
392 -- delete any other packages with the same name
393 -- update the package and any dependencies to point to the new
396 -- When choosing which package to map to a wired-in package
397 -- name, we prefer exposed packages, and pick the latest
398 -- version. To override the default choice, -hide-package
399 -- could be used to hide newer versions.
401 findWiredInPackage :: [PackageConfig] -> String
402 -> IO (Maybe PackageIdentifier)
403 findWiredInPackage pkgs wired_pkg =
404 let all_ps = [ p | p <- pkgs, pkgName (package p) == wired_pkg ] in
405 case filter exposed all_ps of
408 many -> pick (head (sortByVersion many))
409 many -> pick (head (sortByVersion many))
412 debugTraceMsg dflags 2 $
413 ptext SLIT("wired-in package ")
415 <> ptext SLIT(" not found.")
418 debugTraceMsg dflags 2 $
419 ptext SLIT("wired-in package ")
421 <> ptext SLIT(" mapped to ")
422 <> text (showPackageId (package pkg))
423 return (Just (package pkg))
426 mb_wired_in_ids <- mapM (findWiredInPackage pkgs) wired_in_names
428 wired_in_ids = catMaybes mb_wired_in_ids
430 deleteOtherWiredInPackages pkgs = filter ok pkgs
431 where ok p = pkgName (package p) `notElem` wired_in_names
432 || package p `elem` wired_in_ids
434 updateWiredInDependencies pkgs = map upd_pkg pkgs
435 where upd_pkg p = p{ package = upd_pid (package p),
436 depends = map upd_pid (depends p) }
438 upd_pid pid = case filter (== pid) wired_in_ids of
440 (x:_) -> x{ pkgVersion = Version [] [] }
442 pkgs1 = deleteOtherWiredInPackages pkgs
444 pkgs2 = updateWiredInDependencies pkgs1
446 preload1 = map upd_pid preload
448 -- we must return an updated thisPackage, just in case we
449 -- are actually compiling one of the wired-in packages
450 Just old_this_pkg = unpackPackageId this_package
451 new_this_pkg = mkPackageId (upd_pid old_this_pkg)
453 return (pkgs2, preload1, new_this_pkg)
455 -- -----------------------------------------------------------------------------
457 -- Eliminate any packages which have dangling dependencies (
458 -- because the dependency was removed by -ignore-package).
463 -> [PackageId] -- ignored packages
464 -> IO [PackageConfig]
466 elimDanglingDeps dflags pkgs ignored =
467 case partition (not.null.snd) (map (getDanglingDeps pkgs ignored) pkgs) of
468 ([],ps) -> return (map fst ps)
471 elimDanglingDeps dflags (map fst qs)
472 (ignored ++ map packageConfigId (map fst ps))
474 reportElim (p, deps) =
475 debugTraceMsg dflags 2 $
476 (ptext SLIT("package") <+> pprPkg p <+>
477 ptext SLIT("will be ignored due to missing dependencies:") $$
478 nest 2 (hsep (map (text.showPackageId) deps)))
480 getDanglingDeps pkgs ignored p = (p, filter dangling (depends p))
481 where dangling pid = mkPackageId pid `elem` ignored
483 -- -----------------------------------------------------------------------------
484 -- When all the command-line options are in, we can process our package
485 -- settings and populate the package state.
489 -> PackageConfigMap -- initial database
490 -> [PackageId] -- preloaded packages
491 -> PackageId -- this package
493 [PackageId], -- new packages to preload
494 PackageId) -- this package, might be modified if the current
496 -- package is a wired-in package.
498 mkPackageState dflags orig_pkg_db preload0 this_package = do
500 -- Modify the package database according to the command-line flags
501 -- (-package, -hide-package, -ignore-package, -hide-all-packages).
503 let flags = reverse (packageFlags dflags)
504 let pkgs0 = eltsUFM orig_pkg_db
505 pkgs1 <- foldM applyPackageFlag pkgs0 flags
507 -- Here we build up a set of the packages mentioned in -package
508 -- flags on the command line; these are called the "preload"
509 -- packages. we link these packages in eagerly. The preload set
510 -- should contain at least rts & base, which is why we pretend that
511 -- the command line contains -package rts & -package base.
513 let new_preload_packages =
514 map package (pickPackages pkgs0 [ p | ExposePackage p <- flags ])
516 -- hide packages that are subsumed by later versions
517 pkgs2 <- hideOldPackages dflags pkgs1
519 -- sort out which packages are wired in
520 (pkgs3, preload1, new_this_pkg)
521 <- findWiredInPackages dflags pkgs2 new_preload_packages this_package
523 let ignored = map packageConfigId $
524 pickPackages pkgs0 [ p | IgnorePackage p <- flags ]
525 pkgs <- elimDanglingDeps dflags pkgs3 ignored
527 let pkg_db = extendPackageConfigMap emptyPackageConfigMap pkgs
528 pkgids = map packageConfigId pkgs
530 -- add base & rts to the preload packages
531 basicLinkedPackages = filter (flip elemUFM pkg_db)
532 [basePackageId,rtsPackageId]
533 -- but in any case remove the current package from the set of
534 -- preloaded packages so that base/rts does not end up in the
535 -- set up preloaded package when we are just building it
536 preload2 = nub (filter (/= new_this_pkg)
537 (basicLinkedPackages ++ map mkPackageId preload1))
539 -- Close the preload packages with their dependencies
540 dep_preload <- closeDeps pkg_db (zip preload2 (repeat Nothing))
541 let new_dep_preload = filter (`notElem` preload0) dep_preload
543 let pstate = PackageState{ preloadPackages = dep_preload,
545 moduleToPkgConfAll = mkModuleMap pkg_db
548 return (pstate, new_dep_preload, new_this_pkg)
551 -- -----------------------------------------------------------------------------
552 -- Make the mapping from module to package info
556 -> UniqFM [(PackageConfig, Bool)]
557 mkModuleMap pkg_db = foldr extend_modmap emptyUFM pkgids
559 pkgids = map packageConfigId (eltsUFM pkg_db)
561 extend_modmap pkgid modmap =
562 addListToUFM_C (++) modmap
563 ([(m, [(pkg, True)]) | m <- exposed_mods] ++
564 [(m, [(pkg, False)]) | m <- hidden_mods])
566 pkg = expectJust "mkModuleMap" (lookupPackage pkg_db pkgid)
567 exposed_mods = exposedModules pkg
568 hidden_mods = hiddenModules pkg
570 pprPkg :: PackageConfig -> SDoc
571 pprPkg p = text (showPackageId (package p))
573 -- -----------------------------------------------------------------------------
574 -- Extracting information from the packages in scope
576 -- Many of these functions take a list of packages: in those cases,
577 -- the list is expected to contain the "dependent packages",
578 -- i.e. those packages that were found to be depended on by the
579 -- current module/program. These can be auto or non-auto packages, it
580 -- doesn't really matter. The list is always combined with the list
581 -- of preload (command-line) packages to determine which packages to
584 getPackageIncludePath :: DynFlags -> [PackageId] -> IO [String]
585 getPackageIncludePath dflags pkgs = do
586 ps <- getPreloadPackagesAnd dflags pkgs
587 return (nub (filter notNull (concatMap includeDirs ps)))
589 -- includes are in reverse dependency order (i.e. rts first)
590 getPackageCIncludes :: [PackageConfig] -> IO [String]
591 getPackageCIncludes pkg_configs = do
592 return (reverse (nub (filter notNull (concatMap includes pkg_configs))))
594 getPackageLibraryPath :: DynFlags -> [PackageId] -> IO [String]
595 getPackageLibraryPath dflags pkgs = do
596 ps <- getPreloadPackagesAnd dflags pkgs
597 return (nub (filter notNull (concatMap libraryDirs ps)))
599 getPackageLinkOpts :: DynFlags -> [PackageId] -> IO [String]
600 getPackageLinkOpts dflags pkgs = do
601 ps <- getPreloadPackagesAnd dflags pkgs
602 let tag = buildTag dflags
603 rts_tag = rtsBuildTag dflags
605 mkDynName | opt_Static = id
606 | otherwise = (++ ("-ghc" ++ cProjectVersion))
607 libs p = map (mkDynName . addSuffix) (hsLibraries p)
609 all_opts p = map ("-l" ++) (libs p) ++ ldOptions p
611 addSuffix rts@"HSrts" = rts ++ (expandTag rts_tag)
612 addSuffix other_lib = other_lib ++ (expandTag tag)
614 expandTag t | null t = ""
617 return (concat (map all_opts ps))
619 getPackageExtraCcOpts :: DynFlags -> [PackageId] -> IO [String]
620 getPackageExtraCcOpts dflags pkgs = do
621 ps <- getPreloadPackagesAnd dflags pkgs
622 return (concatMap ccOptions ps)
624 getPackageFrameworkPath :: DynFlags -> [PackageId] -> IO [String]
625 getPackageFrameworkPath dflags pkgs = do
626 ps <- getPreloadPackagesAnd dflags pkgs
627 return (nub (filter notNull (concatMap frameworkDirs ps)))
629 getPackageFrameworks :: DynFlags -> [PackageId] -> IO [String]
630 getPackageFrameworks dflags pkgs = do
631 ps <- getPreloadPackagesAnd dflags pkgs
632 return (concatMap frameworks ps)
634 -- -----------------------------------------------------------------------------
637 -- | Takes a Module, and if the module is in a package returns
638 -- @(pkgconf,exposed)@ where pkgconf is the PackageConfig for that package,
639 -- and exposed is True if the package exposes the module.
640 lookupModuleInAllPackages :: DynFlags -> ModuleName -> [(PackageConfig,Bool)]
641 lookupModuleInAllPackages dflags m =
642 case lookupUFM (moduleToPkgConfAll (pkgState dflags)) m of
646 getPreloadPackagesAnd :: DynFlags -> [PackageId] -> IO [PackageConfig]
647 getPreloadPackagesAnd dflags pkgids =
649 state = pkgState dflags
650 pkg_map = pkgIdMap state
651 preload = preloadPackages state
652 pairs = zip pkgids (repeat Nothing)
654 all_pkgs <- throwErr (foldM (add_package pkg_map) preload pairs)
655 return (map (getPackageDetails state) all_pkgs)
657 -- Takes a list of packages, and returns the list with dependencies included,
658 -- in reverse dependency order (a package appears before those it depends on).
659 closeDeps :: PackageConfigMap -> [(PackageId, Maybe PackageId)]
661 closeDeps pkg_map ps = throwErr (closeDepsErr pkg_map ps)
663 throwErr :: MaybeErr Message a -> IO a
664 throwErr m = case m of
665 Failed e -> throwDyn (CmdLineError (showSDoc e))
666 Succeeded r -> return r
668 closeDepsErr :: PackageConfigMap -> [(PackageId,Maybe PackageId)]
669 -> MaybeErr Message [PackageId]
670 closeDepsErr pkg_map ps = foldM (add_package pkg_map) [] ps
673 add_package :: PackageConfigMap -> [PackageId] -> (PackageId,Maybe PackageId)
674 -> MaybeErr Message [PackageId]
675 add_package pkg_db ps (p, mb_parent)
676 | p `elem` ps = return ps -- Check if we've already added this package
678 case lookupPackage pkg_db p of
679 Nothing -> Failed (missingPackageMsg (packageIdString p) <>
680 missingDependencyMsg mb_parent)
682 -- Add the package's dependents also
683 let deps = map mkPackageId (depends pkg)
684 ps' <- foldM (add_package pkg_db) ps (zip deps (repeat (Just p)))
687 missingPackageErr p = throwDyn (CmdLineError (showSDoc (missingPackageMsg p)))
688 missingPackageMsg p = ptext SLIT("unknown package:") <+> text p
690 missingDependencyMsg Nothing = empty
691 missingDependencyMsg (Just parent)
692 = space <> parens (ptext SLIT("dependency of") <+> ftext (packageIdFS parent))
694 -- -----------------------------------------------------------------------------
696 isDllName :: PackageId -> Name -> Bool
697 isDllName this_pkg name
699 | Just mod <- nameModule_maybe name = modulePackageId mod /= this_pkg
700 | otherwise = False -- no, it is not even an external name
702 -- -----------------------------------------------------------------------------
703 -- Displaying packages
705 dumpPackages :: DynFlags -> IO ()
706 -- Show package info on console, if verbosity is >= 3
708 = do let pkg_map = pkgIdMap (pkgState dflags)
710 vcat (map (text.showInstalledPackageInfo.to_ipi) (eltsUFM pkg_map))
712 to_ipi pkgconf@InstalledPackageInfo_{ exposedModules = e,
713 hiddenModules = h } =
714 pkgconf{ exposedModules = map moduleNameString e,
715 hiddenModules = map moduleNameString h }