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-----------------------------------------------------------------------------
-- |
-- Module : Distribution.Simple
-- Copyright : Isaac Jones 2003-2005
--
-- Maintainer : cabal-devel@haskell.org
-- Portability : portable
--
-- This is the command line front end to the Simple build system. When given
-- the parsed command-line args and package information, is able to perform
-- basic commands like configure, build, install, register, etc.
--
-- This module exports the main functions that Setup.hs scripts use. It
-- re-exports the 'UserHooks' type, the standard entry points like
-- 'defaultMain' and 'defaultMainWithHooks' and the predefined sets of
-- 'UserHooks' that custom @Setup.hs@ scripts can extend to add their own
-- behaviour.
--
-- This module isn't called \"Simple\" because it's simple. Far from
-- it. It's called \"Simple\" because it does complicated things to
-- simple software.
--
-- The original idea was that there could be different build systems that all
-- presented the same compatible command line interfaces. There is still a
-- "Distribution.Make" system but in practice no packages use it.
{- All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above
copyright notice, this list of conditions and the following
disclaimer in the documentation and/or other materials provided
with the distribution.
* Neither the name of Isaac Jones nor the names of other
contributors may be used to endorse or promote products derived
from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. -}
{-
Work around this warning:
libraries/Cabal/Distribution/Simple.hs:78:0:
Warning: In the use of `runTests'
(imported from Distribution.Simple.UserHooks):
Deprecated: "Please use the new testing interface instead!"
-}
{-# OPTIONS_GHC -fno-warn-deprecations #-}
module Distribution.Simple (
module Distribution.Package,
module Distribution.Version,
module Distribution.License,
module Distribution.Simple.Compiler,
module Language.Haskell.Extension,
-- * Simple interface
defaultMain, defaultMainNoRead, defaultMainArgs,
-- * Customization
UserHooks(..), Args,
defaultMainWithHooks, defaultMainWithHooksArgs,
-- ** Standard sets of hooks
simpleUserHooks,
autoconfUserHooks,
defaultUserHooks, emptyUserHooks,
-- ** Utils
defaultHookedPackageDesc
) where
-- local
import Distribution.Simple.Compiler hiding (Flag)
import Distribution.Simple.UserHooks
import Distribution.Package --must not specify imports, since we're exporting moule.
import Distribution.PackageDescription
( PackageDescription(..), GenericPackageDescription, Executable(..)
, updatePackageDescription, hasLibs
, HookedBuildInfo, emptyHookedBuildInfo )
import Distribution.PackageDescription.Parse
( readPackageDescription, readHookedBuildInfo )
import Distribution.PackageDescription.Configuration
( flattenPackageDescription )
import Distribution.Simple.Program
( defaultProgramConfiguration, addKnownPrograms, builtinPrograms
, restoreProgramConfiguration, reconfigurePrograms )
import Distribution.Simple.PreProcess (knownSuffixHandlers, PPSuffixHandler)
import Distribution.Simple.Setup
import Distribution.Simple.Command
import Distribution.Simple.Build ( build )
import Distribution.Simple.SrcDist ( sdist )
import Distribution.Simple.Register
( register, unregister )
import Distribution.Simple.Configure
( getPersistBuildConfig, maybeGetPersistBuildConfig
, writePersistBuildConfig, checkPersistBuildConfigOutdated
, configure, checkForeignDeps )
import Distribution.Simple.LocalBuildInfo ( LocalBuildInfo(..) )
import Distribution.Simple.BuildPaths ( srcPref)
import Distribution.Simple.Test (test)
import Distribution.Simple.Install (install)
import Distribution.Simple.Haddock (haddock, hscolour)
import Distribution.Simple.Utils
(die, notice, info, warn, setupMessage, chattyTry,
defaultPackageDesc, defaultHookedPackageDesc,
rawSystemExitWithEnv, cabalVersion, topHandler )
import Distribution.System
( OS(..), buildOS )
import Distribution.Verbosity
import Language.Haskell.Extension
import Distribution.Version
import Distribution.License
import Distribution.Text
( display )
-- Base
import System.Environment(getArgs, getProgName, getEnvironment)
import System.Directory(removeFile, doesFileExist,
doesDirectoryExist, removeDirectoryRecursive)
import System.Exit
import System.IO.Error (isDoesNotExistError)
import Distribution.Compat.Exception (catchIO, throwIOIO)
import Control.Monad (when)
import Data.List (intersperse, unionBy, nub, (\\))
-- | A simple implementation of @main@ for a Cabal setup script.
-- It reads the package description file using IO, and performs the
-- action specified on the command line.
defaultMain :: IO ()
defaultMain = getArgs >>= defaultMainHelper simpleUserHooks
-- | A version of 'defaultMain' that is passed the command line
-- arguments, rather than getting them from the environment.
defaultMainArgs :: [String] -> IO ()
defaultMainArgs = defaultMainHelper simpleUserHooks
-- | A customizable version of 'defaultMain'.
defaultMainWithHooks :: UserHooks -> IO ()
defaultMainWithHooks hooks = getArgs >>= defaultMainHelper hooks
-- | A customizable version of 'defaultMain' that also takes the command
-- line arguments.
defaultMainWithHooksArgs :: UserHooks -> [String] -> IO ()
defaultMainWithHooksArgs = defaultMainHelper
-- | Like 'defaultMain', but accepts the package description as input
-- rather than using IO to read it.
defaultMainNoRead :: GenericPackageDescription -> IO ()
defaultMainNoRead pkg_descr =
getArgs >>=
defaultMainHelper simpleUserHooks { readDesc = return (Just pkg_descr) }
defaultMainHelper :: UserHooks -> Args -> IO ()
defaultMainHelper hooks args = topHandler $
case commandsRun globalCommand commands args of
CommandHelp help -> printHelp help
CommandList opts -> printOptionsList opts
CommandErrors errs -> printErrors errs
CommandReadyToGo (flags, commandParse) ->
case commandParse of
_ | fromFlag (globalVersion flags) -> printVersion
| fromFlag (globalNumericVersion flags) -> printNumericVersion
CommandHelp help -> printHelp help
CommandList opts -> printOptionsList opts
CommandErrors errs -> printErrors errs
CommandReadyToGo action -> action
where
printHelp help = getProgName >>= putStr . help
printOptionsList = putStr . unlines
printErrors errs = do
putStr (concat (intersperse "\n" errs))
exitWith (ExitFailure 1)
printNumericVersion = putStrLn $ display cabalVersion
printVersion = putStrLn $ "Cabal library version "
++ display cabalVersion
progs = addKnownPrograms (hookedPrograms hooks) defaultProgramConfiguration
commands =
[configureCommand progs `commandAddAction` \fs as ->
configureAction hooks fs as >> return ()
,buildCommand progs `commandAddAction` buildAction hooks
,installCommand `commandAddAction` installAction hooks
,copyCommand `commandAddAction` copyAction hooks
,haddockCommand `commandAddAction` haddockAction hooks
,cleanCommand `commandAddAction` cleanAction hooks
,sdistCommand `commandAddAction` sdistAction hooks
,hscolourCommand `commandAddAction` hscolourAction hooks
,registerCommand `commandAddAction` registerAction hooks
,unregisterCommand `commandAddAction` unregisterAction hooks
,testCommand `commandAddAction` testAction hooks
]
-- | Combine the preprocessors in the given hooks with the
-- preprocessors built into cabal.
allSuffixHandlers :: UserHooks
-> [PPSuffixHandler]
allSuffixHandlers hooks
= overridesPP (hookedPreProcessors hooks) knownSuffixHandlers
where
overridesPP :: [PPSuffixHandler] -> [PPSuffixHandler] -> [PPSuffixHandler]
overridesPP = unionBy (\x y -> fst x == fst y)
configureAction :: UserHooks -> ConfigFlags -> Args -> IO LocalBuildInfo
configureAction hooks flags args = do
let distPref = fromFlag $ configDistPref flags
pbi <- preConf hooks args flags
(mb_pd_file, pkg_descr0) <- confPkgDescr
-- get_pkg_descr (configVerbosity flags')
--let pkg_descr = updatePackageDescription pbi pkg_descr0
let epkg_descr = (pkg_descr0, pbi)
--(warns, ers) <- sanityCheckPackage pkg_descr
--errorOut (configVerbosity flags') warns ers
localbuildinfo0 <- confHook hooks epkg_descr flags
-- remember the .cabal filename if we know it
-- and all the extra command line args
let localbuildinfo = localbuildinfo0 {
pkgDescrFile = mb_pd_file,
extraConfigArgs = args
}
writePersistBuildConfig distPref localbuildinfo
let pkg_descr = localPkgDescr localbuildinfo
postConf hooks args flags pkg_descr localbuildinfo
return localbuildinfo
where
verbosity = fromFlag (configVerbosity flags)
confPkgDescr :: IO (Maybe FilePath, GenericPackageDescription)
confPkgDescr = do
mdescr <- readDesc hooks
case mdescr of
Just descr -> return (Nothing, descr)
Nothing -> do
pdfile <- defaultPackageDesc verbosity
descr <- readPackageDescription verbosity pdfile
return (Just pdfile, descr)
buildAction :: UserHooks -> BuildFlags -> Args -> IO ()
buildAction hooks flags args = do
let distPref = fromFlag $ buildDistPref flags
verbosity = fromFlag $ buildVerbosity flags
lbi <- getBuildConfig hooks verbosity distPref
progs <- reconfigurePrograms verbosity
(buildProgramPaths flags)
(buildProgramArgs flags)
(withPrograms lbi)
hookedAction preBuild buildHook postBuild
(return lbi { withPrograms = progs })
hooks flags args
hscolourAction :: UserHooks -> HscolourFlags -> Args -> IO ()
hscolourAction hooks flags args
= do let distPref = fromFlag $ hscolourDistPref flags
verbosity = fromFlag $ hscolourVerbosity flags
hookedAction preHscolour hscolourHook postHscolour
(getBuildConfig hooks verbosity distPref)
hooks flags args
haddockAction :: UserHooks -> HaddockFlags -> Args -> IO ()
haddockAction hooks flags args = do
let distPref = fromFlag $ haddockDistPref flags
verbosity = fromFlag $ haddockVerbosity flags
lbi <- getBuildConfig hooks verbosity distPref
progs <- reconfigurePrograms verbosity
(haddockProgramPaths flags)
(haddockProgramArgs flags)
(withPrograms lbi)
hookedAction preHaddock haddockHook postHaddock
(return lbi { withPrograms = progs })
hooks flags args
cleanAction :: UserHooks -> CleanFlags -> Args -> IO ()
cleanAction hooks flags args = do
pbi <- preClean hooks args flags
pdfile <- defaultPackageDesc verbosity
ppd <- readPackageDescription verbosity pdfile
let pkg_descr0 = flattenPackageDescription ppd
-- We don't sanity check for clean as an error
-- here would prevent cleaning:
--sanityCheckHookedBuildInfo pkg_descr0 pbi
let pkg_descr = updatePackageDescription pbi pkg_descr0
cleanHook hooks pkg_descr () hooks flags
postClean hooks args flags pkg_descr ()
where verbosity = fromFlag (cleanVerbosity flags)
copyAction :: UserHooks -> CopyFlags -> Args -> IO ()
copyAction hooks flags args
= do let distPref = fromFlag $ copyDistPref flags
verbosity = fromFlag $ copyVerbosity flags
hookedAction preCopy copyHook postCopy
(getBuildConfig hooks verbosity distPref)
hooks flags args
installAction :: UserHooks -> InstallFlags -> Args -> IO ()
installAction hooks flags args
= do let distPref = fromFlag $ installDistPref flags
verbosity = fromFlag $ installVerbosity flags
hookedAction preInst instHook postInst
(getBuildConfig hooks verbosity distPref)
hooks flags args
sdistAction :: UserHooks -> SDistFlags -> Args -> IO ()
sdistAction hooks flags args = do
let distPref = fromFlag $ sDistDistPref flags
pbi <- preSDist hooks args flags
mlbi <- maybeGetPersistBuildConfig distPref
pdfile <- defaultPackageDesc verbosity
ppd <- readPackageDescription verbosity pdfile
let pkg_descr0 = flattenPackageDescription ppd
sanityCheckHookedBuildInfo pkg_descr0 pbi
let pkg_descr = updatePackageDescription pbi pkg_descr0
sDistHook hooks pkg_descr mlbi hooks flags
postSDist hooks args flags pkg_descr mlbi
where verbosity = fromFlag (sDistVerbosity flags)
testAction :: UserHooks -> TestFlags -> Args -> IO ()
testAction hooks flags args = do
let distPref = fromFlag $ testDistPref flags
verbosity = fromFlag $ testVerbosity flags
localBuildInfo <- getBuildConfig hooks verbosity distPref
let pkg_descr = localPkgDescr localBuildInfo
-- It is safe to do 'runTests' before the new test handler because the
-- default action is a no-op and if the package uses the old test interface
-- the new handler will find no tests.
runTests hooks args False pkg_descr localBuildInfo
--FIXME: this is a hack, passing the args inside the flags
-- it's because the args to not get passed to the main test hook
let flags' = flags { testList = Flag args }
hookedAction preTest testHook postTest
(getBuildConfig hooks verbosity distPref)
hooks flags' args
registerAction :: UserHooks -> RegisterFlags -> Args -> IO ()
registerAction hooks flags args
= do let distPref = fromFlag $ regDistPref flags
verbosity = fromFlag $ regVerbosity flags
hookedAction preReg regHook postReg
(getBuildConfig hooks verbosity distPref)
hooks flags args
unregisterAction :: UserHooks -> RegisterFlags -> Args -> IO ()
unregisterAction hooks flags args
= do let distPref = fromFlag $ regDistPref flags
verbosity = fromFlag $ regVerbosity flags
hookedAction preUnreg unregHook postUnreg
(getBuildConfig hooks verbosity distPref)
hooks flags args
hookedAction :: (UserHooks -> Args -> flags -> IO HookedBuildInfo)
-> (UserHooks -> PackageDescription -> LocalBuildInfo
-> UserHooks -> flags -> IO ())
-> (UserHooks -> Args -> flags -> PackageDescription
-> LocalBuildInfo -> IO ())
-> IO LocalBuildInfo
-> UserHooks -> flags -> Args -> IO ()
hookedAction pre_hook cmd_hook post_hook get_build_config hooks flags args = do
pbi <- pre_hook hooks args flags
localbuildinfo <- get_build_config
let pkg_descr0 = localPkgDescr localbuildinfo
--pkg_descr0 <- get_pkg_descr (get_verbose flags)
sanityCheckHookedBuildInfo pkg_descr0 pbi
let pkg_descr = updatePackageDescription pbi pkg_descr0
-- TODO: should we write the modified package descr back to the
-- localbuildinfo?
cmd_hook hooks pkg_descr localbuildinfo hooks flags
post_hook hooks args flags pkg_descr localbuildinfo
sanityCheckHookedBuildInfo :: PackageDescription -> HookedBuildInfo -> IO ()
sanityCheckHookedBuildInfo PackageDescription { library = Nothing } (Just _,_)
= die $ "The buildinfo contains info for a library, "
++ "but the package does not have a library."
sanityCheckHookedBuildInfo pkg_descr (_, hookExes)
| not (null nonExistant)
= die $ "The buildinfo contains info for an executable called '"
++ head nonExistant ++ "' but the package does not have a "
++ "executable with that name."
where
pkgExeNames = nub (map exeName (executables pkg_descr))
hookExeNames = nub (map fst hookExes)
nonExistant = hookExeNames \\ pkgExeNames
sanityCheckHookedBuildInfo _ _ = return ()
getBuildConfig :: UserHooks -> Verbosity -> FilePath -> IO LocalBuildInfo
getBuildConfig hooks verbosity distPref = do
lbi_wo_programs <- getPersistBuildConfig distPref
-- Restore info about unconfigured programs, since it is not serialized
let lbi = lbi_wo_programs {
withPrograms = restoreProgramConfiguration
(builtinPrograms ++ hookedPrograms hooks)
(withPrograms lbi_wo_programs)
}
case pkgDescrFile lbi of
Nothing -> return lbi
Just pkg_descr_file -> do
outdated <- checkPersistBuildConfigOutdated distPref pkg_descr_file
if outdated
then reconfigure pkg_descr_file lbi
else return lbi
where
reconfigure :: FilePath -> LocalBuildInfo -> IO LocalBuildInfo
reconfigure pkg_descr_file lbi = do
notice verbosity $ pkg_descr_file ++ " has been changed. "
++ "Re-configuring with most recently used options. "
++ "If this fails, please run configure manually.\n"
let cFlags = configFlags lbi
let cFlags' = cFlags {
-- Since the list of unconfigured programs is not serialized,
-- restore it to the same value as normally used at the beginning
-- of a conigure run:
configPrograms = restoreProgramConfiguration
(builtinPrograms ++ hookedPrograms hooks)
(configPrograms cFlags),
-- Use the current, not saved verbosity level:
configVerbosity = Flag verbosity
}
configureAction hooks cFlags' (extraConfigArgs lbi)
-- --------------------------------------------------------------------------
-- Cleaning
clean :: PackageDescription -> CleanFlags -> IO ()
clean pkg_descr flags = do
let distPref = fromFlag $ cleanDistPref flags
notice verbosity "cleaning..."
maybeConfig <- if fromFlag (cleanSaveConf flags)
then maybeGetPersistBuildConfig distPref
else return Nothing
-- remove the whole dist/ directory rather than tracking exactly what files
-- we created in there.
chattyTry "removing dist/" $ do
exists <- doesDirectoryExist distPref
when exists (removeDirectoryRecursive distPref)
-- Any extra files the user wants to remove
mapM_ removeFileOrDirectory (extraTmpFiles pkg_descr)
-- If the user wanted to save the config, write it back
maybe (return ()) (writePersistBuildConfig distPref) maybeConfig
where
removeFileOrDirectory :: FilePath -> IO ()
removeFileOrDirectory fname = do
isDir <- doesDirectoryExist fname
isFile <- doesFileExist fname
if isDir then removeDirectoryRecursive fname
else if isFile then removeFile fname
else return ()
verbosity = fromFlag (cleanVerbosity flags)
-- --------------------------------------------------------------------------
-- Default hooks
-- | Hooks that correspond to a plain instantiation of the
-- \"simple\" build system
simpleUserHooks :: UserHooks
simpleUserHooks =
emptyUserHooks {
confHook = configure,
postConf = finalChecks,
buildHook = defaultBuildHook,
copyHook = \desc lbi _ f -> install desc lbi f, -- has correct 'copy' behavior with params
testHook = defaultTestHook,
instHook = defaultInstallHook,
sDistHook = \p l h f -> sdist p l f srcPref (allSuffixHandlers h),
cleanHook = \p _ _ f -> clean p f,
hscolourHook = \p l h f -> hscolour p l (allSuffixHandlers h) f,
haddockHook = \p l h f -> haddock p l (allSuffixHandlers h) f,
regHook = defaultRegHook,
unregHook = \p l _ f -> unregister p l f
}
where
finalChecks _args flags pkg_descr lbi =
checkForeignDeps pkg_descr lbi (lessVerbose verbosity)
where
verbosity = fromFlag (configVerbosity flags)
-- | Basic autoconf 'UserHooks':
--
-- * 'postConf' runs @.\/configure@, if present.
--
-- * the pre-hooks 'preBuild', 'preClean', 'preCopy', 'preInst',
-- 'preReg' and 'preUnreg' read additional build information from
-- /package/@.buildinfo@, if present.
--
-- Thus @configure@ can use local system information to generate
-- /package/@.buildinfo@ and possibly other files.
{-# DEPRECATED defaultUserHooks
"Use simpleUserHooks or autoconfUserHooks, unless you need Cabal-1.2\n compatibility in which case you must stick with defaultUserHooks" #-}
defaultUserHooks :: UserHooks
defaultUserHooks = autoconfUserHooks {
confHook = \pkg flags -> do
let verbosity = fromFlag (configVerbosity flags)
warn verbosity $
"defaultUserHooks in Setup script is deprecated."
confHook autoconfUserHooks pkg flags,
postConf = oldCompatPostConf
}
-- This is the annoying old version that only runs configure if it exists.
-- It's here for compatibility with existing Setup.hs scripts. See:
-- http://hackage.haskell.org/trac/hackage/ticket/165
where oldCompatPostConf args flags pkg_descr lbi
= do let verbosity = fromFlag (configVerbosity flags)
noExtraFlags args
confExists <- doesFileExist "configure"
when confExists $
runConfigureScript verbosity
backwardsCompatHack flags lbi
pbi <- getHookedBuildInfo verbosity
sanityCheckHookedBuildInfo pkg_descr pbi
let pkg_descr' = updatePackageDescription pbi pkg_descr
postConf simpleUserHooks args flags pkg_descr' lbi
backwardsCompatHack = True
autoconfUserHooks :: UserHooks
autoconfUserHooks
= simpleUserHooks
{
postConf = defaultPostConf,
preBuild = readHook buildVerbosity,
preClean = readHook cleanVerbosity,
preCopy = readHook copyVerbosity,
preInst = readHook installVerbosity,
preHscolour = readHook hscolourVerbosity,
preHaddock = readHook haddockVerbosity,
preReg = readHook regVerbosity,
preUnreg = readHook regVerbosity
}
where defaultPostConf :: Args -> ConfigFlags -> PackageDescription -> LocalBuildInfo -> IO ()
defaultPostConf args flags pkg_descr lbi
= do let verbosity = fromFlag (configVerbosity flags)
noExtraFlags args
confExists <- doesFileExist "configure"
if confExists
then runConfigureScript verbosity
backwardsCompatHack flags lbi
else die "configure script not found."
pbi <- getHookedBuildInfo verbosity
sanityCheckHookedBuildInfo pkg_descr pbi
let pkg_descr' = updatePackageDescription pbi pkg_descr
postConf simpleUserHooks args flags pkg_descr' lbi
backwardsCompatHack = False
readHook :: (a -> Flag Verbosity) -> Args -> a -> IO HookedBuildInfo
readHook get_verbosity a flags = do
noExtraFlags a
getHookedBuildInfo verbosity
where
verbosity = fromFlag (get_verbosity flags)
runConfigureScript :: Verbosity -> Bool -> ConfigFlags -> LocalBuildInfo
-> IO ()
runConfigureScript verbosity backwardsCompatHack flags lbi = do
env <- getEnvironment
let programConfig = withPrograms lbi
(ccProg, ccFlags) <- configureCCompiler verbosity programConfig
-- The C compiler's compilation and linker flags (e.g.
-- "C compiler flags" and "Gcc Linker flags" from GHC) have already
-- been merged into ccFlags, so we set both CFLAGS and LDFLAGS
-- to ccFlags
-- We don't try and tell configure which ld to use, as we don't have
-- a way to pass its flags too
let env' = appendToEnvironment ("CFLAGS", unwords ccFlags)
env
args' = args ++ ["--with-gcc=" ++ ccProg]
handleNoWindowsSH $
rawSystemExitWithEnv verbosity "sh" args' env'
where
args = "configure" : configureArgs backwardsCompatHack flags
appendToEnvironment (key, val) [] = [(key, val)]
appendToEnvironment (key, val) (kv@(k, v) : rest)
| key == k = (key, v ++ " " ++ val) : rest
| otherwise = kv : appendToEnvironment (key, val) rest
handleNoWindowsSH action
| buildOS /= Windows
= action
| otherwise
= action
`catchIO` \ioe -> if isDoesNotExistError ioe
then die notFoundMsg
else throwIOIO ioe
notFoundMsg = "The package has a './configure' script. This requires a "
++ "Unix compatibility toolchain such as MinGW+MSYS or Cygwin."
getHookedBuildInfo :: Verbosity -> IO HookedBuildInfo
getHookedBuildInfo verbosity = do
maybe_infoFile <- defaultHookedPackageDesc
case maybe_infoFile of
Nothing -> return emptyHookedBuildInfo
Just infoFile -> do
info verbosity $ "Reading parameters from " ++ infoFile
readHookedBuildInfo verbosity infoFile
defaultTestHook :: PackageDescription -> LocalBuildInfo
-> UserHooks -> TestFlags -> IO ()
defaultTestHook pkg_descr localbuildinfo _ flags =
test pkg_descr localbuildinfo flags
defaultInstallHook :: PackageDescription -> LocalBuildInfo
-> UserHooks -> InstallFlags -> IO ()
defaultInstallHook pkg_descr localbuildinfo _ flags = do
let copyFlags = defaultCopyFlags {
copyDistPref = installDistPref flags,
copyDest = toFlag NoCopyDest,
copyVerbosity = installVerbosity flags
}
install pkg_descr localbuildinfo copyFlags
let registerFlags = defaultRegisterFlags {
regDistPref = installDistPref flags,
regInPlace = installInPlace flags,
regPackageDB = installPackageDB flags,
regVerbosity = installVerbosity flags
}
when (hasLibs pkg_descr) $ register pkg_descr localbuildinfo registerFlags
defaultBuildHook :: PackageDescription -> LocalBuildInfo
-> UserHooks -> BuildFlags -> IO ()
defaultBuildHook pkg_descr localbuildinfo hooks flags =
build pkg_descr localbuildinfo flags (allSuffixHandlers hooks)
defaultRegHook :: PackageDescription -> LocalBuildInfo
-> UserHooks -> RegisterFlags -> IO ()
defaultRegHook pkg_descr localbuildinfo _ flags =
if hasLibs pkg_descr
then register pkg_descr localbuildinfo flags
else setupMessage verbosity
"Package contains no library to register:" (packageId pkg_descr)
where verbosity = fromFlag (regVerbosity flags)
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