- %
-% (c) The University of Glasgow, 2006
%
-% Package manipulation
+% (c) The University of Glasgow, 2006
%
\begin{code}
+-- | Package manipulation
module Packages (
module PackageConfig,
PackageState(..),
initPackages,
getPackageDetails,
- lookupModuleInAllPackages,
+ lookupModuleInAllPackages, lookupModuleWithSuggestions,
-- * Inspecting the set of packages in scope
getPackageIncludePath,
getPackageFrameworks,
getPreloadPackagesAnd,
+ collectIncludeDirs, collectLibraryPaths, collectLinkOpts,
+ packageHsLibs,
+
-- * Utils
isDllName
)
#include "HsVersions.h"
import PackageConfig
-import ParsePkgConf ( loadPackageConfig )
-import DynFlags ( dopt, DynFlag(..), DynFlags(..), PackageFlag(..) )
-import StaticFlags ( opt_Static )
+import DynFlags
+import StaticFlags
import Config ( cProjectVersion )
import Name ( Name, nameModule_maybe )
import UniqFM
import Module
import Util
-import Maybes ( expectJust, MaybeErr(..) )
import Panic
import Outputable
+import Maybes
import System.Environment ( getEnv )
import Distribution.InstalledPackageInfo
-import Distribution.Package
-import Distribution.Version
+import Distribution.InstalledPackageInfo.Binary
+import Distribution.Package hiding (PackageId,depends)
import FastString
import ErrUtils ( debugTraceMsg, putMsg, Message )
+import Exception
import System.Directory
-import System.FilePath
-import Data.Maybe
+import System.FilePath as FilePath
+import qualified System.FilePath.Posix as FilePath.Posix
import Control.Monad
-import Data.List
-import Control.Exception ( throwDyn )
+import Data.List as List
+import Data.Map (Map)
+import qualified Data.Map as Map
+import qualified FiniteMap as Map
+import qualified Data.Set as Set
-- ---------------------------------------------------------------------------
-- The Package state
--- Package state is all stored in DynFlags, including the details of
+-- | Package state is all stored in 'DynFlag's, including the details of
-- all packages, which packages are exposed, and which modules they
-- provide.
-
--- The package state is computed by initPackages, and kept in DynFlags.
--
--- * -package <pkg> causes <pkg> to become exposed, and all other packages
+-- The package state is computed by 'initPackages', and kept in DynFlags.
+--
+-- * @-package <pkg>@ causes @<pkg>@ to become exposed, and all other packages
-- with the same name to become hidden.
--
--- * -hide-package <pkg> causes <pkg> to become hidden.
+-- * @-hide-package <pkg>@ causes @<pkg>@ to become hidden.
--
--- * Let exposedPackages be the set of packages thus exposed.
--- Let depExposedPackages be the transitive closure from exposedPackages of
+-- * Let @exposedPackages@ be the set of packages thus exposed.
+-- Let @depExposedPackages@ be the transitive closure from @exposedPackages@ of
-- their dependencies.
--
-- * When searching for a module from an preload import declaration,
--- only the exposed modules in exposedPackages are valid.
+-- only the exposed modules in @exposedPackages@ are valid.
--
-- * When searching for a module from an implicit import, all modules
--- from depExposedPackages are valid.
+-- from @depExposedPackages@ are valid.
--
--- * When linking in a comp manager mode, we link in packages the
+-- * When linking in a compilation manager mode, we link in packages the
-- program depends on (the compiler knows this list by the
-- time it gets to the link step). Also, we link in all packages
--- which were mentioned with preload -package flags on the command-line,
--- or are a transitive dependency of same, or are "base"/"rts".
--- The reason for (b) is that we might need packages which don't
+-- which were mentioned with preload @-package@ flags on the command-line,
+-- or are a transitive dependency of same, or are \"base\"\/\"rts\".
+-- The reason for this is that we might need packages which don't
-- contain any Haskell modules, and therefore won't be discovered
-- by the normal mechanism of dependency tracking.
-- should be in reverse dependency order; that is, a package
-- is always mentioned before the packages it depends on.
- moduleToPkgConfAll :: UniqFM [(PackageConfig,Bool)] -- ModuleEnv mapping
+ moduleToPkgConfAll :: UniqFM [(PackageConfig,Bool)], -- ModuleEnv mapping
-- Derived from pkgIdMap.
-- Maps Module to (pkgconf,exposed), where pkgconf is the
-- PackageConfig for the package containing the module, and
-- exposed is True if the package exposes that module.
+
+ installedPackageIdMap :: InstalledPackageIdMap
}
--- A PackageConfigMap maps a PackageId to a PackageConfig
+-- | A PackageConfigMap maps a 'PackageId' to a 'PackageConfig'
type PackageConfigMap = UniqFM PackageConfig
+type InstalledPackageIdMap = Map InstalledPackageId PackageId
+
+type InstalledPackageIndex = Map InstalledPackageId PackageConfig
+
emptyPackageConfigMap :: PackageConfigMap
emptyPackageConfigMap = emptyUFM
+-- | Find the package we know about with the given id (e.g. \"foo-1.0\"), if any
lookupPackage :: PackageConfigMap -> PackageId -> Maybe PackageConfig
lookupPackage = lookupUFM
= foldl add pkg_map new_pkgs
where add pkg_map p = addToUFM pkg_map (packageConfigId p) p
+-- | Looks up the package with the given id in the package state, panicing if it is
+-- not found
getPackageDetails :: PackageState -> PackageId -> PackageConfig
-getPackageDetails dflags ps = expectJust "getPackageDetails" (lookupPackage (pkgIdMap dflags) ps)
+getPackageDetails ps pid = expectJust "getPackageDetails" (lookupPackage (pkgIdMap ps) pid)
-- ----------------------------------------------------------------------------
-- Loading the package config files and building up the package state
--
-- Returns a list of packages to link in if we're doing dynamic linking.
-- This list contains the packages that the user explicitly mentioned with
--- -package flags.
+-- @-package@ flags.
--
-- 'initPackages' can be called again subsequently after updating the
-- 'packageFlags' field of the 'DynFlags', and it will update the
--- 'packageState' in 'DynFlags' and return a list of packages to
+-- 'pkgState' in 'DynFlags' and return a list of packages to
-- link in.
initPackages :: DynFlags -> IO (DynFlags, [PackageId])
initPackages dflags = do
pkg_db <- case pkgDatabase dflags of
Nothing -> readPackageConfigs dflags
- Just db -> return db
+ Just db -> return $ maybeHidePackages dflags db
(pkg_state, preload, this_pkg)
<- mkPackageState dflags pkg_db [] (thisPackage dflags)
return (dflags{ pkgDatabase = Just pkg_db,
-- -----------------------------------------------------------------------------
-- Reading the package database(s)
-readPackageConfigs :: DynFlags -> IO PackageConfigMap
+readPackageConfigs :: DynFlags -> IO [PackageConfig]
readPackageConfigs dflags = do
- e_pkg_path <- try (getEnv "GHC_PACKAGE_PATH")
+ e_pkg_path <- tryIO (getEnv "GHC_PACKAGE_PATH")
system_pkgconfs <- getSystemPackageConfigs dflags
let pkgconfs = case e_pkg_path of
-- if the path ends in a separator (eg. "/foo/bar:")
-- the we tack on the system paths.
- -- Read all the ones mentioned in -package-conf flags
- pkg_map <- foldM (readPackageConfig dflags) emptyPackageConfigMap
- (reverse pkgconfs ++ extraPkgConfs dflags)
+ pkgs <- mapM (readPackageConfig dflags)
+ (pkgconfs ++ reverse (extraPkgConfs dflags))
+ -- later packages shadow earlier ones. extraPkgConfs
+ -- is in the opposite order to the flags on the
+ -- command line.
- return pkg_map
+ return (concat pkgs)
getSystemPackageConfigs :: DynFlags -> IO [FilePath]
-- System one always comes first
let system_pkgconf = systemPackageConfig dflags
- -- allow package.conf.d to contain a bunch of .conf files
- -- containing package specifications. This is an easier way
- -- to maintain the package database on systems with a package
- -- management system, or systems that don't want to run ghc-pkg
- -- to register or unregister packages. Undocumented feature for now.
- let system_pkgconf_dir = system_pkgconf <.> "d"
- system_pkgconf_dir_exists <- doesDirectoryExist system_pkgconf_dir
- system_pkgconfs <-
- if system_pkgconf_dir_exists
- then do files <- getDirectoryContents system_pkgconf_dir
- return [ system_pkgconf_dir </> file
- | file <- files
- , takeExtension file == ".conf" ]
- else return []
-
-- Read user's package conf (eg. ~/.ghc/i386-linux-6.3/package.conf)
-- unless the -no-user-package-conf flag was given.
- -- We only do this when getAppUserDataDirectory is available
- -- (GHC >= 6.3).
- user_pkgconf <- handle (\_ -> return []) $ do
+ user_pkgconf <- do
+ if not (dopt Opt_ReadUserPackageConf dflags) then return [] else do
appdir <- getAppUserDataDirectory "ghc"
let
- pkgconf = appdir
- </> (TARGET_ARCH ++ '-':TARGET_OS ++ '-':cProjectVersion)
- </> "package.conf"
- flg <- doesFileExist pkgconf
- if (flg && dopt Opt_ReadUserPackageConf dflags)
- then return [pkgconf]
- else return []
-
- return (user_pkgconf ++ system_pkgconfs ++ [system_pkgconf])
-
-
-readPackageConfig
- :: DynFlags -> PackageConfigMap -> FilePath -> IO PackageConfigMap
-readPackageConfig dflags pkg_map conf_file = do
- debugTraceMsg dflags 2 (text "Using package config file:" <+> text conf_file)
- proto_pkg_configs <- loadPackageConfig conf_file
- let top_dir = topDir dflags
- pkg_configs1 = mungePackagePaths top_dir proto_pkg_configs
+ dir = appdir </> (TARGET_ARCH ++ '-':TARGET_OS ++ '-':cProjectVersion)
+ pkgconf = dir </> "package.conf.d"
+ --
+ exist <- doesDirectoryExist pkgconf
+ if exist then return [pkgconf] else return []
+ `catchIO` (\_ -> return [])
+
+ return (system_pkgconf : user_pkgconf)
+
+readPackageConfig :: DynFlags -> FilePath -> IO [PackageConfig]
+readPackageConfig dflags conf_file = do
+ isdir <- doesDirectoryExist conf_file
+
+ proto_pkg_configs <-
+ if isdir
+ then do let filename = conf_file </> "package.cache"
+ debugTraceMsg dflags 2 (text "Using binary package database:" <+> text filename)
+ conf <- readBinPackageDB filename
+ return (map installedPackageInfoToPackageConfig conf)
+
+ else do
+ isfile <- doesFileExist conf_file
+ when (not isfile) $
+ ghcError $ InstallationError $
+ "can't find a package database at " ++ conf_file
+ debugTraceMsg dflags 2 (text "Using package config file:" <+> text conf_file)
+ str <- readFile conf_file
+ return (map installedPackageInfoToPackageConfig $ read str)
+
+ let
+ top_dir = topDir dflags
+ pkgroot = takeDirectory conf_file
+ pkg_configs1 = map (mungePackagePaths top_dir pkgroot) proto_pkg_configs
pkg_configs2 = maybeHidePackages dflags pkg_configs1
- return (extendPackageConfigMap pkg_map pkg_configs2)
+ --
+ return pkg_configs2
maybeHidePackages :: DynFlags -> [PackageConfig] -> [PackageConfig]
maybeHidePackages dflags pkgs
where
hide pkg = pkg{ exposed = False }
-mungePackagePaths :: String -> [PackageConfig] -> [PackageConfig]
--- Replace the string "$topdir" at the beginning of a path
--- with the current topdir (obtained from the -B option).
-mungePackagePaths top_dir ps = map munge_pkg ps
- where
- munge_pkg p = p{ importDirs = munge_paths (importDirs p),
- includeDirs = munge_paths (includeDirs p),
- libraryDirs = munge_paths (libraryDirs p),
- frameworkDirs = munge_paths (frameworkDirs p),
- haddockInterfaces = munge_paths (haddockInterfaces p),
- haddockHTMLs = munge_paths (haddockHTMLs p)
- }
-
- munge_paths = map munge_path
-
- munge_path p
- | Just p' <- maybePrefixMatch "$topdir" p = top_dir ++ p'
- | Just p' <- maybePrefixMatch "$httptopdir" p = toHttpPath top_dir ++ p'
- | otherwise = p
-
- toHttpPath p = "file:///" ++ p
+-- TODO: This code is duplicated in utils/ghc-pkg/Main.hs
+mungePackagePaths :: FilePath -> FilePath -> PackageConfig -> PackageConfig
+-- Perform path/URL variable substitution as per the Cabal ${pkgroot} spec
+-- (http://www.haskell.org/pipermail/libraries/2009-May/011772.html)
+-- Paths/URLs can be relative to ${pkgroot} or ${pkgrooturl}.
+-- The "pkgroot" is the directory containing the package database.
+--
+-- Also perform a similar substitution for the older GHC-specific
+-- "$topdir" variable. The "topdir" is the location of the ghc
+-- installation (obtained from the -B option).
+mungePackagePaths top_dir pkgroot pkg =
+ pkg {
+ importDirs = munge_paths (importDirs pkg),
+ includeDirs = munge_paths (includeDirs pkg),
+ libraryDirs = munge_paths (libraryDirs pkg),
+ frameworkDirs = munge_paths (frameworkDirs pkg),
+ haddockInterfaces = munge_paths (haddockInterfaces pkg),
+ haddockHTMLs = munge_urls (haddockHTMLs pkg)
+ }
+ where
+ munge_paths = map munge_path
+ munge_urls = map munge_url
+
+ munge_path p
+ | Just p' <- stripVarPrefix "${pkgroot}" p = pkgroot ++ p'
+ | Just p' <- stripVarPrefix "$topdir" p = top_dir ++ p'
+ | otherwise = p
+
+ munge_url p
+ | Just p' <- stripVarPrefix "${pkgrooturl}" p = toUrlPath pkgroot p'
+ | Just p' <- stripVarPrefix "$httptopdir" p = toUrlPath top_dir p'
+ | otherwise = p
+
+ toUrlPath r p = "file:///"
+ -- URLs always use posix style '/' separators:
+ ++ FilePath.Posix.joinPath
+ (r : -- We need to drop a leading "/" or "\\"
+ -- if there is one:
+ dropWhile (all isPathSeparator)
+ (FilePath.splitDirectories p))
+
+ -- We could drop the separator here, and then use </> above. However,
+ -- by leaving it in and using ++ we keep the same path separator
+ -- rather than letting FilePath change it to use \ as the separator
+ stripVarPrefix var path = case stripPrefix var path of
+ Just [] -> Just []
+ Just cs@(c : _) | isPathSeparator c -> Just cs
+ _ -> Nothing
-- -----------------------------------------------------------------------------
-- (-package, -hide-package, -ignore-package).
applyPackageFlag
- :: [PackageConfig] -- Initial database
+ :: UnusablePackages
+ -> [PackageConfig] -- Initial database
-> PackageFlag -- flag to apply
-> IO [PackageConfig] -- new database
-applyPackageFlag pkgs flag =
+applyPackageFlag unusable pkgs flag =
case flag of
- ExposePackage str ->
- case matchingPackages str pkgs of
- Nothing -> missingPackageErr str
- Just ([], _) -> panic "applyPackageFlag"
- Just (p:ps,qs) -> return (p':ps')
- where p' = p {exposed=True}
- ps' = hideAll (pkgName (package p)) (ps++qs)
-
- HidePackage str ->
- case matchingPackages str pkgs of
- Nothing -> missingPackageErr str
- Just (ps,qs) -> return (map hide ps ++ qs)
- where hide p = p {exposed=False}
-
- IgnorePackage str ->
- case matchingPackages str pkgs of
- Nothing -> return pkgs
- Just (_, qs) -> return qs
- -- missing package is not an error for -ignore-package,
- -- because a common usage is to -ignore-package P as
- -- a preventative measure just in case P exists.
+ ExposePackage str ->
+ case selectPackages (matchingStr str) pkgs unusable of
+ Left ps -> packageFlagErr flag ps
+ Right (p:ps,qs) -> return (p':ps')
+ where p' = p {exposed=True}
+ ps' = hideAll (pkgName (sourcePackageId p)) (ps++qs)
+ _ -> panic "applyPackageFlag"
+
+ ExposePackageId str ->
+ case selectPackages (matchingId str) pkgs unusable of
+ Left ps -> packageFlagErr flag ps
+ Right (p:ps,qs) -> return (p':ps')
+ where p' = p {exposed=True}
+ ps' = hideAll (pkgName (sourcePackageId p)) (ps++qs)
+ _ -> panic "applyPackageFlag"
+
+ HidePackage str ->
+ case selectPackages (matchingStr str) pkgs unusable of
+ Left ps -> packageFlagErr flag ps
+ Right (ps,qs) -> return (map hide ps ++ qs)
+ where hide p = p {exposed=False}
+
+ _ -> panic "applyPackageFlag"
+
where
-- When a package is requested to be exposed, we hide all other
-- packages with the same name.
hideAll name ps = map maybe_hide ps
- where maybe_hide p | pkgName (package p) == name = p {exposed=False}
- | otherwise = p
-
-
-matchingPackages :: String -> [PackageConfig]
- -> Maybe ([PackageConfig], [PackageConfig])
-matchingPackages str pkgs
- = case partition (matches str) pkgs of
- ([],_) -> Nothing
- (ps,rest) -> Just (sortByVersion ps, rest)
- where
- -- A package named on the command line can either include the
- -- version, or just the name if it is unambiguous.
- matches str p
- = str == showPackageId (package p)
- || str == pkgName (package p)
-
-pickPackages :: [PackageConfig] -> [String] -> [PackageConfig]
-pickPackages pkgs strs =
- [ p | p <- strs, Just (p:_, _) <- [matchingPackages p pkgs] ]
+ where maybe_hide p
+ | pkgName (sourcePackageId p) == name = p {exposed=False}
+ | otherwise = p
+
+
+selectPackages :: (PackageConfig -> Bool) -> [PackageConfig]
+ -> UnusablePackages
+ -> Either [(PackageConfig, UnusablePackageReason)]
+ ([PackageConfig], [PackageConfig])
+selectPackages matches pkgs unusable
+ = let
+ (ps,rest) = partition matches pkgs
+ reasons = [ (p, Map.lookup (installedPackageId p) unusable)
+ | p <- ps ]
+ in
+ if all (isJust.snd) reasons
+ then Left [ (p, reason) | (p,Just reason) <- reasons ]
+ else Right (sortByVersion [ p | (p,Nothing) <- reasons ], rest)
+
+-- A package named on the command line can either include the
+-- version, or just the name if it is unambiguous.
+matchingStr :: String -> PackageConfig -> Bool
+matchingStr str p
+ = str == display (sourcePackageId p)
+ || str == display (pkgName (sourcePackageId p))
+
+matchingId :: String -> PackageConfig -> Bool
+matchingId str p = InstalledPackageId str == installedPackageId p
sortByVersion :: [InstalledPackageInfo_ m] -> [InstalledPackageInfo_ m]
-sortByVersion = sortBy (flip (comparing (pkgVersion.package)))
+sortByVersion = sortBy (flip (comparing (pkgVersion.sourcePackageId)))
comparing :: Ord a => (t -> a) -> t -> t -> Ordering
comparing f a b = f a `compare` f b
+packageFlagErr :: PackageFlag
+ -> [(PackageConfig, UnusablePackageReason)]
+ -> IO a
+
+-- for missing DPH package we emit a more helpful error message, because
+-- this may be the result of using -fdph-par or -fdph-seq.
+packageFlagErr (ExposePackage pkg) [] | is_dph_package pkg
+ = ghcError (CmdLineError (showSDoc $ dph_err))
+ where dph_err = text "the " <> text pkg <> text " package is not installed."
+ $$ text "To install it: \"cabal install dph\"."
+ is_dph_package pkg = "dph" `isPrefixOf` pkg
+
+packageFlagErr flag reasons = ghcError (CmdLineError (showSDoc $ err))
+ where err = text "cannot satisfy " <> ppr_flag <>
+ (if null reasons then empty else text ": ") $$
+ nest 4 (ppr_reasons $$
+ text "(use -v for more information)")
+ ppr_flag = case flag of
+ IgnorePackage p -> text "-ignore-package " <> text p
+ HidePackage p -> text "-hide-package " <> text p
+ ExposePackage p -> text "-package " <> text p
+ ExposePackageId p -> text "-package-id " <> text p
+ ppr_reasons = vcat (map ppr_reason reasons)
+ ppr_reason (p, reason) = pprReason (pprIPkg p <+> text "is") reason
+
-- -----------------------------------------------------------------------------
-- Hide old versions of packages
| not (exposed p) = return p
| (p' : _) <- later_versions = do
debugTraceMsg dflags 2 $
- (ptext (sLit "hiding package") <+>
- text (showPackageId (package p)) <+>
+ (ptext (sLit "hiding package") <+> pprSPkg p <+>
ptext (sLit "to avoid conflict with later version") <+>
- text (showPackageId (package p')))
+ pprSPkg p')
return (p {exposed=False})
| otherwise = return p
- where myname = pkgName (package p)
- myversion = pkgVersion (package p)
+ where myname = pkgName (sourcePackageId p)
+ myversion = pkgVersion (sourcePackageId p)
later_versions = [ p | p <- pkgs, exposed p,
- let pkg = package p,
+ let pkg = sourcePackageId p,
pkgName pkg == myname,
pkgVersion pkg > myversion ]
findWiredInPackages
:: DynFlags
-> [PackageConfig] -- database
- -> [PackageIdentifier] -- preload packages
- -> PackageId -- this package
- -> IO ([PackageConfig],
- [PackageIdentifier],
- PackageId)
+ -> IO [PackageConfig]
-findWiredInPackages dflags pkgs preload this_package = do
+findWiredInPackages dflags pkgs = do
--
-- Now we must find our wired-in packages, and rename them to
-- their canonical names (eg. base-1.0 ==> base).
--
let
- wired_in_pkgids = [ primPackageId,
+ wired_in_pkgids :: [String]
+ wired_in_pkgids = map packageIdString
+ [ primPackageId,
integerPackageId,
basePackageId,
rtsPackageId,
- haskell98PackageId,
thPackageId,
- ndpPackageId ]
+ dphSeqPackageId,
+ dphParPackageId ]
- wired_in_names = map packageIdString wired_in_pkgids
+ matches :: PackageConfig -> String -> Bool
+ pc `matches` pid = display (pkgName (sourcePackageId pc)) == pid
-- find which package corresponds to each wired-in package
-- delete any other packages with the same name
-- could be used to hide newer versions.
--
findWiredInPackage :: [PackageConfig] -> String
- -> IO (Maybe PackageIdentifier)
+ -> IO (Maybe InstalledPackageId)
findWiredInPackage pkgs wired_pkg =
- let all_ps = [ p | p <- pkgs, pkgName (package p) == wired_pkg ] in
- case filter exposed all_ps of
- [] -> case all_ps of
- [] -> notfound
- many -> pick (head (sortByVersion many))
- many -> pick (head (sortByVersion many))
+ let all_ps = [ p | p <- pkgs, p `matches` wired_pkg ] in
+ case all_ps of
+ [] -> notfound
+ many -> pick (head (sortByVersion many))
where
notfound = do
debugTraceMsg dflags 2 $
<> text wired_pkg
<> ptext (sLit " not found.")
return Nothing
+ pick :: InstalledPackageInfo_ ModuleName
+ -> IO (Maybe InstalledPackageId)
pick pkg = do
debugTraceMsg dflags 2 $
ptext (sLit "wired-in package ")
<> text wired_pkg
<> ptext (sLit " mapped to ")
- <> text (showPackageId (package pkg))
- return (Just (package pkg))
+ <> pprIPkg pkg
+ return (Just (installedPackageId pkg))
- mb_wired_in_ids <- mapM (findWiredInPackage pkgs) wired_in_names
+ mb_wired_in_ids <- mapM (findWiredInPackage pkgs) wired_in_pkgids
let
wired_in_ids = catMaybes mb_wired_in_ids
- deleteOtherWiredInPackages pkgs = filter ok pkgs
- where ok p = pkgName (package p) `notElem` wired_in_names
- || package p `elem` wired_in_ids
+ -- this is old: we used to assume that if there were
+ -- multiple versions of wired-in packages installed that
+ -- they were mutually exclusive. Now we're assuming that
+ -- you have one "main" version of each wired-in package
+ -- (the latest version), and the others are backward-compat
+ -- wrappers that depend on this one. e.g. base-4.0 is the
+ -- latest, base-3.0 is a compat wrapper depending on base-4.0.
+ {-
+ deleteOtherWiredInPackages pkgs = filterOut bad pkgs
+ where bad p = any (p `matches`) wired_in_pkgids
+ && package p `notElem` map fst wired_in_ids
+ -}
updateWiredInDependencies pkgs = map upd_pkg pkgs
- where upd_pkg p = p{ package = upd_pid (package p),
- depends = map upd_pid (depends p) }
-
- upd_pid pid = case filter (== pid) wired_in_ids of
- [] -> pid
- (x:_) -> x{ pkgVersion = Version [] [] }
+ where upd_pkg p
+ | installedPackageId p `elem` wired_in_ids
+ = p { sourcePackageId = (sourcePackageId p){ pkgVersion = Version [] [] } }
+ | otherwise
+ = p
- pkgs1 = deleteOtherWiredInPackages pkgs
+ return $ updateWiredInDependencies pkgs
- pkgs2 = updateWiredInDependencies pkgs1
-
- preload1 = map upd_pid preload
-
- -- we must return an updated thisPackage, just in case we
- -- are actually compiling one of the wired-in packages
- Just old_this_pkg = unpackPackageId this_package
- new_this_pkg = mkPackageId (upd_pid old_this_pkg)
+-- ----------------------------------------------------------------------------
- return (pkgs2, preload1, new_this_pkg)
+data UnusablePackageReason
+ = IgnoredWithFlag
+ | MissingDependencies [InstalledPackageId]
+ | ShadowedBy InstalledPackageId
+
+type UnusablePackages = Map InstalledPackageId UnusablePackageReason
+
+pprReason :: SDoc -> UnusablePackageReason -> SDoc
+pprReason pref reason = case reason of
+ IgnoredWithFlag ->
+ pref <+> ptext (sLit "ignored due to an -ignore-package flag")
+ MissingDependencies deps ->
+ pref <+>
+ ptext (sLit "unusable due to missing or recursive dependencies:") $$
+ nest 2 (hsep (map (text.display) deps))
+ ShadowedBy ipid ->
+ pref <+> ptext (sLit "shadowed by package ") <> text (display ipid)
+
+reportUnusable :: DynFlags -> UnusablePackages -> IO ()
+reportUnusable dflags pkgs = mapM_ report (Map.toList pkgs)
+ where
+ report (ipid, reason) =
+ debugTraceMsg dflags 2 $
+ pprReason
+ (ptext (sLit "package") <+>
+ text (display ipid) <+> text "is") reason
-- ----------------------------------------------------------------------------
--
-- dependency graph, repeatedly adding packages whose dependencies are
-- satisfied until no more can be added.
--
-elimDanglingDeps
- :: DynFlags
- -> [PackageConfig]
- -> [PackageId] -- ignored packages
- -> IO [PackageConfig]
+findBroken :: [PackageConfig] -> UnusablePackages
+findBroken pkgs = go [] Map.empty pkgs
+ where
+ go avail ipids not_avail =
+ case partitionWith (depsAvailable ipids) not_avail of
+ ([], not_avail) ->
+ Map.fromList [ (installedPackageId p, MissingDependencies deps)
+ | (p,deps) <- not_avail ]
+ (new_avail, not_avail) ->
+ go (new_avail ++ avail) new_ipids (map fst not_avail)
+ where new_ipids = Map.insertList
+ [ (installedPackageId p, p) | p <- new_avail ]
+ ipids
+
+ depsAvailable :: InstalledPackageIndex
+ -> PackageConfig
+ -> Either PackageConfig (PackageConfig, [InstalledPackageId])
+ depsAvailable ipids pkg
+ | null dangling = Left pkg
+ | otherwise = Right (pkg, dangling)
+ where dangling = filter (not . (`Map.member` ipids)) (depends pkg)
-elimDanglingDeps dflags pkgs ignored = go [] pkgs'
+-- -----------------------------------------------------------------------------
+-- Eliminate shadowed packages, giving the user some feedback
+
+-- later packages in the list should shadow earlier ones with the same
+-- package name/version. Additionally, a package may be preferred if
+-- it is in the transitive closure of packages selected using -package-id
+-- flags.
+shadowPackages :: [PackageConfig] -> [InstalledPackageId] -> UnusablePackages
+shadowPackages pkgs preferred
+ = let (shadowed,_) = foldl check ([],emptyUFM) pkgs
+ in Map.fromList shadowed
where
- pkgs' = filter (\p -> packageConfigId p `notElem` ignored) pkgs
+ check (shadowed,pkgmap) pkg
+ | Just oldpkg <- lookupUFM pkgmap (packageConfigId pkg)
+ , let
+ ipid_new = installedPackageId pkg
+ ipid_old = installedPackageId oldpkg
+ --
+ , ipid_old /= ipid_new
+ = if ipid_old `elem` preferred
+ then ( (ipid_new, ShadowedBy ipid_old) : shadowed, pkgmap )
+ else ( (ipid_old, ShadowedBy ipid_new) : shadowed, pkgmap' )
+ | otherwise
+ = (shadowed, pkgmap')
+ where
+ pkgmap' = addToUFM pkgmap (packageConfigId pkg) pkg
- go avail not_avail =
- case partitionWith (depsAvailable avail) not_avail of
- ([], not_avail) -> do mapM_ reportElim not_avail; return avail
- (new_avail, not_avail) -> go (new_avail ++ avail) (map fst not_avail)
+-- -----------------------------------------------------------------------------
- depsAvailable :: [PackageConfig] -> PackageConfig
- -> Either PackageConfig (PackageConfig, [PackageIdentifier])
- depsAvailable pkgs_ok pkg
- | null dangling = Left pkg
- | otherwise = Right (pkg, dangling)
- where dangling = filter (`notElem` pids) (depends pkg)
- pids = map package pkgs_ok
+ignorePackages :: [PackageFlag] -> [PackageConfig] -> UnusablePackages
+ignorePackages flags pkgs = Map.fromList (concatMap doit flags)
+ where
+ doit (IgnorePackage str) =
+ case partition (matchingStr str) pkgs of
+ (ps, _) -> [ (installedPackageId p, IgnoredWithFlag)
+ | p <- ps ]
+ -- missing package is not an error for -ignore-package,
+ -- because a common usage is to -ignore-package P as
+ -- a preventative measure just in case P exists.
+ doit _ = panic "ignorePackages"
- reportElim (p, deps) =
- debugTraceMsg dflags 2 $
- (ptext (sLit "package") <+> pprPkg p <+>
- ptext (sLit "will be ignored due to missing or recursive dependencies:") $$
- nest 2 (hsep (map (text.showPackageId) deps)))
+-- -----------------------------------------------------------------------------
+
+depClosure :: InstalledPackageIndex
+ -> [InstalledPackageId]
+ -> [InstalledPackageId]
+depClosure index ipids = closure Map.empty ipids
+ where
+ closure set [] = Map.keys set
+ closure set (ipid : ipids)
+ | ipid `Map.member` set = closure set ipids
+ | Just p <- Map.lookup ipid index = closure (Map.insert ipid p set)
+ (depends p ++ ipids)
+ | otherwise = closure set ipids
-- -----------------------------------------------------------------------------
-- When all the command-line options are in, we can process our package
mkPackageState
:: DynFlags
- -> PackageConfigMap -- initial database
+ -> [PackageConfig] -- initial database
-> [PackageId] -- preloaded packages
-> PackageId -- this package
-> IO (PackageState,
[PackageId], -- new packages to preload
PackageId) -- this package, might be modified if the current
-
-- package is a wired-in package.
-mkPackageState dflags orig_pkg_db preload0 this_package = do
+mkPackageState dflags pkgs0 preload0 this_package = do
+
+{-
+ Plan.
+
+ 1. P = transitive closure of packages selected by -package-id
+
+ 2. Apply shadowing. When there are multiple packages with the same
+ sourcePackageId,
+ * if one is in P, use that one
+ * otherwise, use the one highest in the package stack
+ [
+ rationale: we cannot use two packages with the same sourcePackageId
+ in the same program, because sourcePackageId is the symbol prefix.
+ Hence we must select a consistent set of packages to use. We have
+ a default algorithm for doing this: packages higher in the stack
+ shadow those lower down. This default algorithm can be overriden
+ by giving explicit -package-id flags; then we have to take these
+ preferences into account when selecting which other packages are
+ made available.
+
+ Our simple algorithm throws away some solutions: there may be other
+ consistent sets that would satisfy the -package flags, but it's
+ not GHC's job to be doing constraint solving.
+ ]
+
+ 3. remove packages selected by -ignore-package
+
+ 4. remove any packages with missing dependencies, or mutually recursive
+ dependencies.
+
+ 5. report (with -v) any packages that were removed by steps 2-4
+
+ 6. apply flags to set exposed/hidden on the resulting packages
+ - if any flag refers to a package which was removed by 2-4, then
+ we can give an error message explaining why
+
+ 7. hide any packages which are superseded by later exposed packages
+-}
+
+ let
+ flags = reverse (packageFlags dflags) ++ dphPackage
+ -- expose the appropriate DPH backend library
+ dphPackage = case dphBackend dflags of
+ DPHPar -> [ExposePackage "dph-prim-par", ExposePackage "dph-par"]
+ DPHSeq -> [ExposePackage "dph-prim-seq", ExposePackage "dph-seq"]
+ DPHThis -> []
+ DPHNone -> []
+
+ -- pkgs0 with duplicate packages filtered out. This is
+ -- important: it is possible for a package in the global package
+ -- DB to have the same IPID as a package in the user DB, and
+ -- we want the latter to take precedence. This is not the same
+ -- as shadowing (below), since in this case the two packages
+ -- have the same ABI and are interchangeable.
+ --
+ -- #4072: note that we must retain the ordering of the list here
+ -- so that shadowing behaves as expected when we apply it later.
+ pkgs0_unique = snd $ foldr del (Set.empty,[]) pkgs0
+ where del p (s,ps)
+ | pid `Set.member` s = (s,ps)
+ | otherwise = (Set.insert pid s, p:ps)
+ where pid = installedPackageId p
+ -- XXX this is just a variant of nub
+
+ ipid_map = Map.fromList [ (installedPackageId p, p) | p <- pkgs0 ]
+
+ ipid_selected = depClosure ipid_map [ InstalledPackageId i
+ | ExposePackageId i <- flags ]
+
+ (ignore_flags, other_flags) = partition is_ignore flags
+ is_ignore IgnorePackage{} = True
+ is_ignore _ = False
+
+ shadowed = shadowPackages pkgs0_unique ipid_selected
+
+ ignored = ignorePackages ignore_flags pkgs0_unique
+
+ pkgs0' = filter (not . (`Map.member` (Map.union shadowed ignored)) . installedPackageId) pkgs0_unique
+ broken = findBroken pkgs0'
+ unusable = shadowed `Map.union` ignored `Map.union` broken
+
+ reportUnusable dflags unusable
+
--
-- Modify the package database according to the command-line flags
-- (-package, -hide-package, -ignore-package, -hide-all-packages).
--
- let flags = reverse (packageFlags dflags)
- let pkgs0 = eltsUFM orig_pkg_db
- pkgs1 <- foldM applyPackageFlag pkgs0 flags
+ pkgs1 <- foldM (applyPackageFlag unusable) pkgs0_unique other_flags
+ let pkgs2 = filter (not . (`Map.member` unusable) . installedPackageId) pkgs1
-- Here we build up a set of the packages mentioned in -package
-- flags on the command line; these are called the "preload"
-- should contain at least rts & base, which is why we pretend that
-- the command line contains -package rts & -package base.
--
- let new_preload_packages =
- map package (pickPackages pkgs0 [ p | ExposePackage p <- flags ])
+ let preload1 = [ installedPackageId p | f <- flags, p <- get_exposed f ]
+
+ get_exposed (ExposePackage s) = filter (matchingStr s) pkgs2
+ get_exposed (ExposePackageId s) = filter (matchingId s) pkgs2
+ get_exposed _ = []
-- hide packages that are subsumed by later versions
- pkgs2 <- hideOldPackages dflags pkgs1
+ pkgs3 <- hideOldPackages dflags pkgs2
-- sort out which packages are wired in
- (pkgs3, preload1, new_this_pkg)
- <- findWiredInPackages dflags pkgs2 new_preload_packages this_package
+ pkgs4 <- findWiredInPackages dflags pkgs3
+
+ let pkg_db = extendPackageConfigMap emptyPackageConfigMap pkgs4
+
+ ipid_map = Map.fromList [ (installedPackageId p, packageConfigId p)
+ | p <- pkgs4 ]
- let ignored = map packageConfigId $
- pickPackages pkgs0 [ p | IgnorePackage p <- flags ]
- pkgs <- elimDanglingDeps dflags pkgs3 ignored
+ lookupIPID ipid@(InstalledPackageId str)
+ | Just pid <- Map.lookup ipid ipid_map = return pid
+ | otherwise = missingPackageErr str
- let pkg_db = extendPackageConfigMap emptyPackageConfigMap pkgs
+ preload2 <- mapM lookupIPID preload1
+ let
-- add base & rts to the preload packages
- basicLinkedPackages = filter (flip elemUFM pkg_db)
- [basePackageId,rtsPackageId]
+ basicLinkedPackages
+ | dopt Opt_AutoLinkPackages dflags
+ = filter (flip elemUFM pkg_db) [basePackageId, rtsPackageId]
+ | otherwise = []
-- but in any case remove the current package from the set of
-- preloaded packages so that base/rts does not end up in the
-- set up preloaded package when we are just building it
- preload2 = nub (filter (/= new_this_pkg)
- (basicLinkedPackages ++ map mkPackageId preload1))
-
+ preload3 = nub $ filter (/= this_package)
+ $ (basicLinkedPackages ++ preload2)
+
-- Close the preload packages with their dependencies
- dep_preload <- closeDeps pkg_db (zip preload2 (repeat Nothing))
+ dep_preload <- closeDeps pkg_db ipid_map (zip preload3 (repeat Nothing))
let new_dep_preload = filter (`notElem` preload0) dep_preload
let pstate = PackageState{ preloadPackages = dep_preload,
- pkgIdMap = pkg_db,
- moduleToPkgConfAll = mkModuleMap pkg_db
- }
-
- return (pstate, new_dep_preload, new_this_pkg)
+ pkgIdMap = pkg_db,
+ moduleToPkgConfAll = mkModuleMap pkg_db,
+ installedPackageIdMap = ipid_map
+ }
+ return (pstate, new_dep_preload, this_package)
+
-- -----------------------------------------------------------------------------
-- Make the mapping from module to package info
exposed_mods = exposedModules pkg
hidden_mods = hiddenModules pkg
-pprPkg :: PackageConfig -> SDoc
-pprPkg p = text (showPackageId (package p))
+pprSPkg :: PackageConfig -> SDoc
+pprSPkg p = text (display (sourcePackageId p))
+
+pprIPkg :: PackageConfig -> SDoc
+pprIPkg p = text (display (installedPackageId p))
-- -----------------------------------------------------------------------------
-- Extracting information from the packages in scope
-- of preload (command-line) packages to determine which packages to
-- use.
+-- | Find all the include directories in these and the preload packages
getPackageIncludePath :: DynFlags -> [PackageId] -> IO [String]
-getPackageIncludePath dflags pkgs = do
- ps <- getPreloadPackagesAnd dflags pkgs
- return (nub (filter notNull (concatMap includeDirs ps)))
+getPackageIncludePath dflags pkgs =
+ collectIncludeDirs `fmap` getPreloadPackagesAnd dflags pkgs
+collectIncludeDirs :: [PackageConfig] -> [FilePath]
+collectIncludeDirs ps = nub (filter notNull (concatMap includeDirs ps))
+
+-- | Find all the library paths in these and the preload packages
getPackageLibraryPath :: DynFlags -> [PackageId] -> IO [String]
-getPackageLibraryPath dflags pkgs = do
- ps <- getPreloadPackagesAnd dflags pkgs
- return (nub (filter notNull (concatMap libraryDirs ps)))
+getPackageLibraryPath dflags pkgs =
+ collectLibraryPaths `fmap` getPreloadPackagesAnd dflags pkgs
+
+collectLibraryPaths :: [PackageConfig] -> [FilePath]
+collectLibraryPaths ps = nub (filter notNull (concatMap libraryDirs ps))
+-- | Find all the link options in these and the preload packages
getPackageLinkOpts :: DynFlags -> [PackageId] -> IO [String]
-getPackageLinkOpts dflags pkgs = do
- ps <- getPreloadPackagesAnd dflags pkgs
- let tag = buildTag dflags
- rts_tag = rtsBuildTag dflags
- let
+getPackageLinkOpts dflags pkgs =
+ collectLinkOpts dflags `fmap` getPreloadPackagesAnd dflags pkgs
+
+collectLinkOpts :: DynFlags -> [PackageConfig] -> [String]
+collectLinkOpts dflags ps = concat (map all_opts ps)
+ where
+ libs p = packageHsLibs dflags p ++ extraLibraries p
+ all_opts p = map ("-l" ++) (libs p) ++ ldOptions p
+
+packageHsLibs :: DynFlags -> PackageConfig -> [String]
+packageHsLibs dflags p = map (mkDynName . addSuffix) (hsLibraries p)
+ where
+ ways0 = ways dflags
+
+ ways1 = filter ((/= WayDyn) . wayName) ways0
+ -- the name of a shared library is libHSfoo-ghc<version>.so
+ -- we leave out the _dyn, because it is superfluous
+
+ -- debug RTS includes support for -eventlog
+ ways2 | WayDebug `elem` map wayName ways1
+ = filter ((/= WayEventLog) . wayName) ways1
+ | otherwise
+ = ways1
+
+ tag = mkBuildTag (filter (not . wayRTSOnly) ways2)
+ rts_tag = mkBuildTag ways2
+
mkDynName | opt_Static = id
| otherwise = (++ ("-ghc" ++ cProjectVersion))
- libs p = map (mkDynName . addSuffix) (hsLibraries p)
- ++ extraLibraries p
- all_opts p = map ("-l" ++) (libs p) ++ ldOptions p
addSuffix rts@"HSrts" = rts ++ (expandTag rts_tag)
addSuffix other_lib = other_lib ++ (expandTag tag)
expandTag t | null t = ""
| otherwise = '_':t
- return (concat (map all_opts ps))
-
+-- | Find all the C-compiler options in these and the preload packages
getPackageExtraCcOpts :: DynFlags -> [PackageId] -> IO [String]
getPackageExtraCcOpts dflags pkgs = do
ps <- getPreloadPackagesAnd dflags pkgs
return (concatMap ccOptions ps)
+-- | Find all the package framework paths in these and the preload packages
getPackageFrameworkPath :: DynFlags -> [PackageId] -> IO [String]
getPackageFrameworkPath dflags pkgs = do
ps <- getPreloadPackagesAnd dflags pkgs
return (nub (filter notNull (concatMap frameworkDirs ps)))
+-- | Find all the package frameworks in these and the preload packages
getPackageFrameworks :: DynFlags -> [PackageId] -> IO [String]
getPackageFrameworks dflags pkgs = do
ps <- getPreloadPackagesAnd dflags pkgs
-- -----------------------------------------------------------------------------
-- Package Utils
--- | Takes a Module, and if the module is in a package returns
--- @(pkgconf,exposed)@ where pkgconf is the PackageConfig for that package,
--- and exposed is True if the package exposes the module.
+-- | Takes a 'Module', and if the module is in a package returns
+-- @(pkgconf, exposed)@ where pkgconf is the PackageConfig for that package,
+-- and exposed is @True@ if the package exposes the module.
lookupModuleInAllPackages :: DynFlags -> ModuleName -> [(PackageConfig,Bool)]
-lookupModuleInAllPackages dflags m =
- case lookupUFM (moduleToPkgConfAll (pkgState dflags)) m of
- Nothing -> []
- Just ps -> ps
-
+lookupModuleInAllPackages dflags m
+ = case lookupModuleWithSuggestions dflags m of
+ Right pbs -> pbs
+ Left _ -> []
+
+lookupModuleWithSuggestions
+ :: DynFlags -> ModuleName
+ -> Either [Module] [(PackageConfig,Bool)]
+ -- Lookup module in all packages
+ -- Right pbs => found in pbs
+ -- Left ms => not found; but here are sugestions
+lookupModuleWithSuggestions dflags m
+ = case lookupUFM (moduleToPkgConfAll pkg_state) m of
+ Nothing -> Left suggestions
+ Just ps -> Right ps
+ where
+ pkg_state = pkgState dflags
+ suggestions
+ | dopt Opt_HelpfulErrors dflags = fuzzyLookup (moduleNameString m) all_mods
+ | otherwise = []
+
+ all_mods :: [(String, Module)] -- All modules
+ all_mods = [ (moduleNameString mod_nm, mkModule pkg_id mod_nm)
+ | pkg_config <- eltsUFM (pkgIdMap pkg_state)
+ , let pkg_id = packageConfigId pkg_config
+ , mod_nm <- exposedModules pkg_config ]
+
+-- | Find all the 'PackageConfig' in both the preload packages from 'DynFlags' and corresponding to the list of
+-- 'PackageConfig's
getPreloadPackagesAnd :: DynFlags -> [PackageId] -> IO [PackageConfig]
getPreloadPackagesAnd dflags pkgids =
let
state = pkgState dflags
pkg_map = pkgIdMap state
+ ipid_map = installedPackageIdMap state
preload = preloadPackages state
pairs = zip pkgids (repeat Nothing)
in do
- all_pkgs <- throwErr (foldM (add_package pkg_map) preload pairs)
+ all_pkgs <- throwErr (foldM (add_package pkg_map ipid_map) preload pairs)
return (map (getPackageDetails state) all_pkgs)
-- Takes a list of packages, and returns the list with dependencies included,
-- in reverse dependency order (a package appears before those it depends on).
-closeDeps :: PackageConfigMap -> [(PackageId, Maybe PackageId)]
- -> IO [PackageId]
-closeDeps pkg_map ps = throwErr (closeDepsErr pkg_map ps)
+closeDeps :: PackageConfigMap
+ -> Map InstalledPackageId PackageId
+ -> [(PackageId, Maybe PackageId)]
+ -> IO [PackageId]
+closeDeps pkg_map ipid_map ps = throwErr (closeDepsErr pkg_map ipid_map ps)
throwErr :: MaybeErr Message a -> IO a
throwErr m = case m of
- Failed e -> throwDyn (CmdLineError (showSDoc e))
+ Failed e -> ghcError (CmdLineError (showSDoc e))
Succeeded r -> return r
-closeDepsErr :: PackageConfigMap -> [(PackageId,Maybe PackageId)]
- -> MaybeErr Message [PackageId]
-closeDepsErr pkg_map ps = foldM (add_package pkg_map) [] ps
+closeDepsErr :: PackageConfigMap
+ -> Map InstalledPackageId PackageId
+ -> [(PackageId,Maybe PackageId)]
+ -> MaybeErr Message [PackageId]
+closeDepsErr pkg_map ipid_map ps = foldM (add_package pkg_map ipid_map) [] ps
-- internal helper
-add_package :: PackageConfigMap -> [PackageId] -> (PackageId,Maybe PackageId)
- -> MaybeErr Message [PackageId]
-add_package pkg_db ps (p, mb_parent)
+add_package :: PackageConfigMap
+ -> Map InstalledPackageId PackageId
+ -> [PackageId]
+ -> (PackageId,Maybe PackageId)
+ -> MaybeErr Message [PackageId]
+add_package pkg_db ipid_map ps (p, mb_parent)
| p `elem` ps = return ps -- Check if we've already added this package
| otherwise =
case lookupPackage pkg_db p of
missingDependencyMsg mb_parent)
Just pkg -> do
-- Add the package's dependents also
- let deps = map mkPackageId (depends pkg)
- ps' <- foldM (add_package pkg_db) ps (zip deps (repeat (Just p)))
+ ps' <- foldM add_package_ipid ps (depends pkg)
return (p : ps')
+ where
+ add_package_ipid ps ipid@(InstalledPackageId str)
+ | Just pid <- Map.lookup ipid ipid_map
+ = add_package pkg_db ipid_map ps (pid, Just p)
+ | otherwise
+ = Failed (missingPackageMsg str <> missingDependencyMsg mb_parent)
-missingPackageErr :: String -> IO [PackageConfig]
-missingPackageErr p = throwDyn (CmdLineError (showSDoc (missingPackageMsg p)))
+missingPackageErr :: String -> IO a
+missingPackageErr p = ghcError (CmdLineError (showSDoc (missingPackageMsg p)))
missingPackageMsg :: String -> SDoc
missingPackageMsg p = ptext (sLit "unknown package:") <+> text p
-- -----------------------------------------------------------------------------
+-- | Will the 'Name' come from a dynamically linked library?
isDllName :: PackageId -> Name -> Bool
+-- Despite the "dll", I think this function just means that
+-- the synbol comes from another dynamically-linked package,
+-- and applies on all platforms, not just Windows
isDllName this_pkg name
| opt_Static = False
| Just mod <- nameModule_maybe name = modulePackageId mod /= this_pkg
-- -----------------------------------------------------------------------------
-- Displaying packages
+-- | Show package info on console, if verbosity is >= 3
dumpPackages :: DynFlags -> IO ()
--- Show package info on console, if verbosity is >= 3
dumpPackages dflags
= do let pkg_map = pkgIdMap (pkgState dflags)
putMsg dflags $
- vcat (map (text.showInstalledPackageInfo.to_ipi) (eltsUFM pkg_map))
- where
- to_ipi pkgconf@InstalledPackageInfo_{ exposedModules = e,
- hiddenModules = h } =
- pkgconf{ exposedModules = map moduleNameString e,
- hiddenModules = map moduleNameString h }
+ vcat (map (text . showInstalledPackageInfo
+ . packageConfigToInstalledPackageInfo)
+ (eltsUFM pkg_map))
\end{code}
projects / ghc-hetmet.git / blobdiff