Register.hs 19.3 KB
Newer Older
1 2
-----------------------------------------------------------------------------
-- |
ijones's avatar
ijones committed
3
-- Module      :  Distribution.Simple.Register
4
-- Copyright   :  Isaac Jones 2003-2004
5
-- License     :  BSD3
6
--
Duncan Coutts's avatar
Duncan Coutts committed
7
-- Maintainer  :  cabal-devel@haskell.org
ijones's avatar
ijones committed
8
-- Portability :  portable
9
--
Duncan Coutts's avatar
Duncan Coutts committed
10 11 12 13 14 15 16 17
-- This module deals with registering and unregistering packages. There are a
-- couple ways it can do this, one is to do it directly. Another is to generate
-- a script that can be run later to do it. The idea here being that the user
-- is shielded from the details of what command to use for package registration
-- for a particular compiler. In practice this aspect was not especially
-- popular so we also provide a way to simply generate the package registration
-- file which then must be manually passed to @ghc-pkg@. It is possible to
-- generate registration information for where the package is to be installed,
Ian D. Bollinger's avatar
Ian D. Bollinger committed
18
-- or alternatively to register the package in place in the build tree. The
Duncan Coutts's avatar
Duncan Coutts committed
19 20 21 22 23 24
-- latter is occasionally handy, and will become more important when we try to
-- build multi-package systems.
--
-- This module does not delegate anything to the per-compiler modules but just
-- mixes it all in in this module, which is rather unsatisfactory. The script
-- generation and the unregister feature are not well used or tested.
25

26
module Distribution.Simple.Register (
Duncan Coutts's avatar
Duncan Coutts committed
27 28 29
    register,
    unregister,

30
    initPackageDB,
31 32 33 34
    doesPackageDBExist,
    createPackageDB,
    deletePackageDB,

refold's avatar
refold committed
35
    invokeHcPkg,
Duncan Coutts's avatar
Duncan Coutts committed
36
    registerPackage,
37
    generateRegistrationInfo,
Duncan Coutts's avatar
Duncan Coutts committed
38 39 40
    inplaceInstalledPackageInfo,
    absoluteInstalledPackageInfo,
    generalInstalledPackageInfo,
41
  ) where
42

43
import Distribution.Simple.LocalBuildInfo
44
import Distribution.Simple.BuildPaths
45 46 47 48 49

import qualified Distribution.Simple.GHC   as GHC
import qualified Distribution.Simple.GHCJS as GHCJS
import qualified Distribution.Simple.LHC   as LHC
import qualified Distribution.Simple.UHC   as UHC
50
import qualified Distribution.Simple.HaskellSuite as HaskellSuite
51

52
import Distribution.Simple.Compiler
Duncan Coutts's avatar
Duncan Coutts committed
53 54 55
import Distribution.Simple.Program
import Distribution.Simple.Program.Script
import qualified Distribution.Simple.Program.HcPkg as HcPkg
56
import Distribution.Simple.Setup
Duncan Coutts's avatar
Duncan Coutts committed
57
import Distribution.PackageDescription
58
import Distribution.Package
59
import qualified Distribution.InstalledPackageInfo as IPI
60
import Distribution.InstalledPackageInfo (InstalledPackageInfo)
61
import Distribution.Simple.Utils
62
import Distribution.System
63
import Distribution.Text
Duncan Coutts's avatar
Duncan Coutts committed
64
import Distribution.Verbosity as Verbosity
65

66
import System.FilePath ((</>), (<.>), isAbsolute)
Duncan Coutts's avatar
Duncan Coutts committed
67
import System.Directory
68 69
         ( getCurrentDirectory, removeDirectoryRecursive, removeFile
         , doesDirectoryExist, doesFileExist )
ijones's avatar
ijones committed
70

71
import Data.Version
72
import Control.Monad (when)
Duncan Coutts's avatar
Duncan Coutts committed
73
import Data.Maybe
74
         ( isJust, fromMaybe, maybeToList )
Duncan Coutts's avatar
Duncan Coutts committed
75 76
import Data.List
         ( partition, nub )
77
import qualified Data.ByteString.Lazy.Char8 as BS.Char8
78

simonmar's avatar
simonmar committed
79 80 81
-- -----------------------------------------------------------------------------
-- Registration

ijones's avatar
ijones committed
82
register :: PackageDescription -> LocalBuildInfo
ijones's avatar
ijones committed
83
         -> RegisterFlags -- ^Install in the user's database?; verbose
ijones's avatar
ijones committed
84
         -> IO ()
85
register pkg@PackageDescription { library       = Just lib  } lbi regFlags
86
  = do
87
    let clbi = getComponentLocalBuildInfo lbi CLibName
88

89
    absPackageDBs    <- absolutePackageDBPaths packageDbs
90
    installedPkgInfo <- generateRegistrationInfo
91
                           verbosity pkg lib lbi clbi inplace reloc distPref
92
                           (registrationPackageDB absPackageDBs)
93

94
    when (fromFlag (regPrintId regFlags)) $ do
95
      putStrLn (display (IPI.installedComponentId installedPkgInfo))
96

97 98 99 100
     -- Three different modes:
    case () of
     _ | modeGenerateRegFile   -> writeRegistrationFile installedPkgInfo
       | modeGenerateRegScript -> writeRegisterScript   installedPkgInfo
101 102
       | otherwise             -> do
           setupMessage verbosity "Registering" (packageId pkg)
103
           registerPackage verbosity (compiler lbi) (withPrograms lbi) False
104
                           packageDbs installedPkgInfo
Duncan Coutts's avatar
Duncan Coutts committed
105 106 107 108 109 110 111 112 113

  where
    modeGenerateRegFile = isJust (flagToMaybe (regGenPkgConf regFlags))
    regFile             = fromMaybe (display (packageId pkg) <.> "conf")
                                    (fromFlag (regGenPkgConf regFlags))

    modeGenerateRegScript = fromFlag (regGenScript regFlags)

    inplace   = fromFlag (regInPlace regFlags)
114
    reloc     = relocatable lbi
Duncan Coutts's avatar
Duncan Coutts committed
115 116 117 118 119
    -- FIXME: there's really no guarantee this will work.
    -- registering into a totally different db stack can
    -- fail if dependencies cannot be satisfied.
    packageDbs = nub $ withPackageDB lbi
                    ++ maybeToList (flagToMaybe  (regPackageDB regFlags))
Duncan Coutts's avatar
Duncan Coutts committed
120 121 122
    distPref  = fromFlag (regDistPref regFlags)
    verbosity = fromFlag (regVerbosity regFlags)

123
    writeRegistrationFile installedPkgInfo = do
Duncan Coutts's avatar
Duncan Coutts committed
124
      notice verbosity ("Creating package registration file: " ++ regFile)
125
      writeUTF8File regFile (IPI.showInstalledPackageInfo installedPkgInfo)
Duncan Coutts's avatar
Duncan Coutts committed
126

127
    writeRegisterScript installedPkgInfo =
Duncan Coutts's avatar
Duncan Coutts committed
128
      case compilerFlavor (compiler lbi) of
129 130 131 132 133 134
        JHC -> notice verbosity "Registration scripts not needed for jhc"
        UHC -> notice verbosity "Registration scripts not needed for uhc"
        _   -> withHcPkg
               "Registration scripts are not implemented for this compiler"
               (compiler lbi) (withPrograms lbi)
               (writeHcPkgRegisterScript verbosity installedPkgInfo packageDbs)
Duncan Coutts's avatar
Duncan Coutts committed
135 136 137 138 139 140

register _ _ regFlags = notice verbosity "No package to register"
  where
    verbosity = fromFlag (regVerbosity regFlags)


141 142
generateRegistrationInfo :: Verbosity
                         -> PackageDescription
Duncan Coutts's avatar
Duncan Coutts committed
143 144 145 146
                         -> Library
                         -> LocalBuildInfo
                         -> ComponentLocalBuildInfo
                         -> Bool
147
                         -> Bool
Duncan Coutts's avatar
Duncan Coutts committed
148
                         -> FilePath
149
                         -> PackageDB
Duncan Coutts's avatar
Duncan Coutts committed
150
                         -> IO InstalledPackageInfo
151
generateRegistrationInfo verbosity pkg lib lbi clbi inplace reloc distPref packageDb = do
Duncan Coutts's avatar
Duncan Coutts committed
152 153
  --TODO: eliminate pwd!
  pwd <- getCurrentDirectory
154

155
  --TODO: the method of setting the ComponentId is compiler specific
156
  --      this aspect should be delegated to a per-compiler helper.
157
  let comp = compiler lbi
158
  abi_hash <-
159 160
    case compilerFlavor comp of
     GHC | compilerVersion comp >= Version [6,11] [] -> do
161
            fmap AbiHash $ GHC.libAbiHash verbosity pkg lbi lib clbi
162
     GHCJS -> do
163 164
            fmap AbiHash $ GHCJS.libAbiHash verbosity pkg lbi lib clbi
     _ -> return (AbiHash "")
165

Christiaan Baaij's avatar
Christiaan Baaij committed
166 167 168
  installedPkgInfo <-
    if inplace
      then return (inplaceInstalledPackageInfo pwd distPref
169
                     pkg abi_hash lib lbi clbi)
Christiaan Baaij's avatar
Christiaan Baaij committed
170 171
    else if reloc
      then relocRegistrationInfo verbosity
172
                     pkg lib lbi clbi abi_hash packageDb
Christiaan Baaij's avatar
Christiaan Baaij committed
173
      else return (absoluteInstalledPackageInfo
174
                     pkg abi_hash lib lbi clbi)
175

176

177
  return installedPkgInfo{ IPI.abiHash = abi_hash }
178

179 180 181 182 183
relocRegistrationInfo :: Verbosity
                      -> PackageDescription
                      -> Library
                      -> LocalBuildInfo
                      -> ComponentLocalBuildInfo
184
                      -> AbiHash
185 186
                      -> PackageDB
                      -> IO InstalledPackageInfo
187
relocRegistrationInfo verbosity pkg lib lbi clbi abi_hash packageDb =
188
  case (compilerFlavor (compiler lbi)) of
189 190
    GHC -> do fs <- GHC.pkgRoot verbosity lbi packageDb
              return (relocatableInstalledPackageInfo
191
                        pkg abi_hash lib lbi clbi fs)
192 193
    _   -> die "Distribution.Simple.Register.relocRegistrationInfo: \
               \not implemented for this compiler"
194

195 196 197 198
initPackageDB :: Verbosity -> Compiler -> ProgramConfiguration -> FilePath -> IO ()
initPackageDB verbosity comp progdb dbPath =
    createPackageDB verbosity comp progdb True dbPath

199
-- | Create an empty package DB at the specified location.
200 201 202 203 204 205 206 207 208 209 210 211
createPackageDB :: Verbosity -> Compiler -> ProgramConfiguration -> Bool
                -> FilePath -> IO ()
createPackageDB verbosity comp progdb preferCompat dbPath =
    case compilerFlavor comp of
      GHC   -> HcPkg.init (GHC.hcPkgInfo   progdb) verbosity preferCompat dbPath
      GHCJS -> HcPkg.init (GHCJS.hcPkgInfo progdb) verbosity False dbPath
      LHC   -> HcPkg.init (LHC.hcPkgInfo   progdb) verbosity False dbPath
      UHC   -> return ()
      HaskellSuite _ -> HaskellSuite.initPackageDB verbosity progdb dbPath
      _              -> die $ "Distribution.Simple.Register.createPackageDB: "
                           ++ "not implemented for this compiler"

212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227
doesPackageDBExist :: FilePath -> IO Bool
doesPackageDBExist dbPath = do
    -- currently one impl for all compiler flavours, but could change if needed
    dir_exists <- doesDirectoryExist dbPath
    if dir_exists
        then return True
        else doesFileExist dbPath

deletePackageDB :: FilePath -> IO ()
deletePackageDB dbPath = do
    -- currently one impl for all compiler flavours, but could change if needed
    dir_exists <- doesDirectoryExist dbPath
    if dir_exists
        then removeDirectoryRecursive dbPath
        else do file_exists <- doesFileExist dbPath
                when file_exists $ removeFile dbPath
refold's avatar
refold committed
228 229 230 231 232 233

-- | Run @hc-pkg@ using a given package DB stack, directly forwarding the
-- provided command-line arguments to it.
invokeHcPkg :: Verbosity -> Compiler -> ProgramConfiguration -> PackageDBStack
                -> [String] -> IO ()
invokeHcPkg verbosity comp conf dbStack extraArgs =
234 235 236 237
  withHcPkg "invokeHcPkg" comp conf
    (\hpi -> HcPkg.invoke hpi verbosity dbStack extraArgs)

withHcPkg :: String -> Compiler -> ProgramConfiguration
238
          -> (HcPkg.HcPkgInfo -> IO a) -> IO a
239 240 241 242 243 244 245
withHcPkg name comp conf f =
  case compilerFlavor comp of
    GHC   -> f (GHC.hcPkgInfo conf)
    GHCJS -> f (GHCJS.hcPkgInfo conf)
    LHC   -> f (LHC.hcPkgInfo conf)
    _     -> die ("Distribution.Simple.Register." ++ name ++ ":\
                  \not implemented for this compiler")
246

Duncan Coutts's avatar
Duncan Coutts committed
247
registerPackage :: Verbosity
248 249
                -> Compiler
                -> ProgramConfiguration
250
                -> Bool
251
                -> PackageDBStack
252
                -> InstalledPackageInfo
Duncan Coutts's avatar
Duncan Coutts committed
253
                -> IO ()
254
registerPackage verbosity comp progdb multiInstance packageDbs installedPkgInfo =
255
  case compilerFlavor comp of
256 257 258 259
    GHC   -> GHC.registerPackage   verbosity progdb multiInstance packageDbs installedPkgInfo
    GHCJS -> GHCJS.registerPackage verbosity progdb multiInstance packageDbs installedPkgInfo
    _ | multiInstance
          -> die "Registering multiple package instances is not yet supported for this compiler"
260 261
    LHC   -> LHC.registerPackage   verbosity      progdb packageDbs installedPkgInfo
    UHC   -> UHC.registerPackage   verbosity comp progdb packageDbs installedPkgInfo
262
    JHC   -> notice verbosity "Registering for jhc (nothing to do)"
263
    HaskellSuite {} ->
264
      HaskellSuite.registerPackage verbosity      progdb packageDbs installedPkgInfo
Duncan Coutts's avatar
Duncan Coutts committed
265 266 267
    _    -> die "Registering is not implemented for this compiler"

writeHcPkgRegisterScript :: Verbosity
268
                         -> InstalledPackageInfo
269
                         -> PackageDBStack
270
                         -> HcPkg.HcPkgInfo
Duncan Coutts's avatar
Duncan Coutts committed
271
                         -> IO ()
272 273
writeHcPkgRegisterScript verbosity installedPkgInfo packageDbs hpi = do
  let invocation  = HcPkg.reregisterInvocation hpi Verbosity.normal
274
                      packageDbs (Right installedPkgInfo)
275
      regScript   = invocationAsSystemScript buildOS invocation
Duncan Coutts's avatar
Duncan Coutts committed
276 277

  notice verbosity ("Creating package registration script: " ++ regScriptFileName)
278
  writeUTF8File regScriptFileName regScript
Duncan Coutts's avatar
Duncan Coutts committed
279 280 281 282 283 284
  setFileExecutable regScriptFileName

regScriptFileName :: FilePath
regScriptFileName = case buildOS of
                        Windows -> "register.bat"
                        _       -> "register.sh"
simonmar's avatar
simonmar committed
285

286

287 288 289
-- -----------------------------------------------------------------------------
-- Making the InstalledPackageInfo

Duncan Coutts's avatar
Duncan Coutts committed
290 291 292 293 294 295 296
-- | Construct 'InstalledPackageInfo' for a library in a package, given a set
-- of installation directories.
--
generalInstalledPackageInfo
  :: ([FilePath] -> [FilePath]) -- ^ Translate relative include dir paths to
                                -- absolute paths.
  -> PackageDescription
297
  -> AbiHash
Duncan Coutts's avatar
Duncan Coutts committed
298
  -> Library
299
  -> LocalBuildInfo
Duncan Coutts's avatar
Duncan Coutts committed
300 301 302
  -> ComponentLocalBuildInfo
  -> InstallDirs FilePath
  -> InstalledPackageInfo
303
generalInstalledPackageInfo adjustRelIncDirs pkg abi_hash lib lbi clbi installDirs =
304
  IPI.InstalledPackageInfo {
305
    IPI.sourcePackageId    = packageId   pkg,
306 307
    IPI.installedComponentId= componentId clbi,
    IPI.compatPackageKey   = componentCompatPackageKey clbi,
Duncan Coutts's avatar
Duncan Coutts committed
308 309 310 311 312 313 314
    IPI.license            = license     pkg,
    IPI.copyright          = copyright   pkg,
    IPI.maintainer         = maintainer  pkg,
    IPI.author             = author      pkg,
    IPI.stability          = stability   pkg,
    IPI.homepage           = homepage    pkg,
    IPI.pkgUrl             = pkgUrl      pkg,
315
    IPI.synopsis           = synopsis    pkg,
Duncan Coutts's avatar
Duncan Coutts committed
316 317
    IPI.description        = description pkg,
    IPI.category           = category    pkg,
318
    IPI.abiHash            = abi_hash,
Duncan Coutts's avatar
Duncan Coutts committed
319
    IPI.exposed            = libExposed  lib,
320
    IPI.exposedModules     = componentExposedModules clbi,
Duncan Coutts's avatar
Duncan Coutts committed
321
    IPI.hiddenModules      = otherModules bi,
322
    IPI.installedInstantiatedWith   = map (\(k,(p,n)) ->
323
                                   (k,IPI.OriginalModule (IPI.installedComponentId p) n))
324
                                 (instantiatedWith lbi),
325
    IPI.trusted            = IPI.trusted IPI.emptyInstalledPackageInfo,
Duncan Coutts's avatar
Duncan Coutts committed
326
    IPI.importDirs         = [ libdir installDirs | hasModules ],
327 328
    -- Note. the libsubdir and datasubdir templates have already been expanded
    -- into libdir and datadir.
Duncan Coutts's avatar
Duncan Coutts committed
329 330 331
    IPI.libraryDirs        = if hasLibrary
                               then libdir installDirs : extraLibDirs bi
                               else                      extraLibDirs bi,
332
    IPI.dataDir            = datadir installDirs,
333
    IPI.hsLibraries        = if hasLibrary
334
                               then [getHSLibraryName (componentId clbi)]
335
                               else [],
Duncan Coutts's avatar
Duncan Coutts committed
336
    IPI.extraLibraries     = extraLibs bi,
337
    IPI.extraGHCiLibraries = extraGHCiLibs bi,
Duncan Coutts's avatar
Duncan Coutts committed
338 339
    IPI.includeDirs        = absinc ++ adjustRelIncDirs relinc,
    IPI.includes           = includes bi,
340
    IPI.depends            = map fst (componentPackageDeps clbi),
Duncan Coutts's avatar
Duncan Coutts committed
341 342 343 344 345 346 347
    IPI.ccOptions          = [], -- Note. NOT ccOptions bi!
                                 -- We don't want cc-options to be propagated
                                 -- to C compilations in other packages.
    IPI.ldOptions          = ldOptions bi,
    IPI.frameworkDirs      = [],
    IPI.frameworks         = frameworks bi,
    IPI.haddockInterfaces  = [haddockdir installDirs </> haddockName pkg],
348 349
    IPI.haddockHTMLs       = [htmldir installDirs],
    IPI.pkgRoot            = Nothing
Duncan Coutts's avatar
Duncan Coutts committed
350 351 352 353
  }
  where
    bi = libBuildInfo lib
    (absinc, relinc) = partition isAbsolute (includeDirs bi)
354
    hasModules = not $ null (libModules lib)
Duncan Coutts's avatar
Duncan Coutts committed
355
    hasLibrary = hasModules || not (null (cSources bi))
356 357 358
                            || (not (null (jsSources bi)) &&
                                compilerFlavor (compiler lbi) == GHCJS)

Ian D. Bollinger's avatar
Ian D. Bollinger committed
359
-- | Construct 'InstalledPackageInfo' for a library that is in place in the
Duncan Coutts's avatar
Duncan Coutts committed
360 361
-- build tree.
--
Ian D. Bollinger's avatar
Ian D. Bollinger committed
362
-- This function knows about the layout of in place packages.
Duncan Coutts's avatar
Duncan Coutts committed
363 364 365 366
--
inplaceInstalledPackageInfo :: FilePath -- ^ top of the build tree
                            -> FilePath -- ^ location of the dist tree
                            -> PackageDescription
367
                            -> AbiHash
Duncan Coutts's avatar
Duncan Coutts committed
368 369 370 371
                            -> Library
                            -> LocalBuildInfo
                            -> ComponentLocalBuildInfo
                            -> InstalledPackageInfo
372
inplaceInstalledPackageInfo inplaceDir distPref pkg abi_hash lib lbi clbi =
373
    generalInstalledPackageInfo adjustRelativeIncludeDirs
374
                                pkg abi_hash lib lbi clbi installDirs
Duncan Coutts's avatar
Duncan Coutts committed
375
  where
refold's avatar
refold committed
376
    adjustRelativeIncludeDirs = map (inplaceDir </>)
Duncan Coutts's avatar
Duncan Coutts committed
377
    installDirs =
378
      (absoluteInstallDirs pkg lbi NoCopyDest) {
Duncan Coutts's avatar
Duncan Coutts committed
379
        libdir     = inplaceDir </> buildDir lbi,
380
        datadir    = inplaceDir </> dataDir pkg,
Duncan Coutts's avatar
Duncan Coutts committed
381 382 383 384 385 386 387 388 389 390 391 392 393 394
        docdir     = inplaceDocdir,
        htmldir    = inplaceHtmldir,
        haddockdir = inplaceHtmldir
      }
    inplaceDocdir  = inplaceDir </> distPref </> "doc"
    inplaceHtmldir = inplaceDocdir </> "html" </> display (packageName pkg)


-- | Construct 'InstalledPackageInfo' for the final install location of a
-- library package.
--
-- This function knows about the layout of installed packages.
--
absoluteInstalledPackageInfo :: PackageDescription
395
                             -> AbiHash
Duncan Coutts's avatar
Duncan Coutts committed
396 397 398 399
                             -> Library
                             -> LocalBuildInfo
                             -> ComponentLocalBuildInfo
                             -> InstalledPackageInfo
400
absoluteInstalledPackageInfo pkg abi_hash lib lbi clbi =
401
    generalInstalledPackageInfo adjustReativeIncludeDirs
402
                                pkg abi_hash lib lbi clbi installDirs
Duncan Coutts's avatar
Duncan Coutts committed
403 404 405 406 407 408 409
  where
    -- For installed packages we install all include files into one dir,
    -- whereas in the build tree they may live in multiple local dirs.
    adjustReativeIncludeDirs _
      | null (installIncludes bi) = []
      | otherwise                 = [includedir installDirs]
    bi = libBuildInfo lib
410
    installDirs = absoluteInstallDirs pkg lbi NoCopyDest
Duncan Coutts's avatar
Duncan Coutts committed
411

412 413

relocatableInstalledPackageInfo :: PackageDescription
414
                                -> AbiHash
415 416 417
                                -> Library
                                -> LocalBuildInfo
                                -> ComponentLocalBuildInfo
418
                                -> FilePath
419
                                -> InstalledPackageInfo
420
relocatableInstalledPackageInfo pkg abi_hash lib lbi clbi pkgroot =
421
    generalInstalledPackageInfo adjustReativeIncludeDirs
422
                                pkg abi_hash lib lbi clbi installDirs
423 424 425 426 427 428 429
  where
    -- For installed packages we install all include files into one dir,
    -- whereas in the build tree they may live in multiple local dirs.
    adjustReativeIncludeDirs _
      | null (installIncludes bi) = []
      | otherwise                 = [includedir installDirs]
    bi = libBuildInfo lib
430 431 432

    installDirs = fmap (("${pkgroot}" </>) . shortRelativePath pkgroot)
                $ absoluteInstallDirs pkg lbi NoCopyDest
433

simonmar's avatar
simonmar committed
434 435
-- -----------------------------------------------------------------------------
-- Unregistration
436

ijones's avatar
ijones committed
437
unregister :: PackageDescription -> LocalBuildInfo -> RegisterFlags -> IO ()
Duncan Coutts's avatar
Duncan Coutts committed
438 439 440
unregister pkg lbi regFlags = do
  let pkgid     = packageId pkg
      genScript = fromFlag (regGenScript regFlags)
441
      verbosity = fromFlag (regVerbosity regFlags)
Duncan Coutts's avatar
Duncan Coutts committed
442
      packageDb = fromFlagOrDefault (registrationPackageDB (withPackageDB lbi))
443
                                    (regPackageDB regFlags)
444 445 446 447 448 449 450
      unreg hpi =
        let invocation = HcPkg.unregisterInvocation
                           hpi Verbosity.normal packageDb pkgid
        in if genScript
             then writeFileAtomic unregScriptFileName
                    (BS.Char8.pack $ invocationAsSystemScript buildOS invocation)
             else runProgramInvocation verbosity invocation
Duncan Coutts's avatar
Duncan Coutts committed
451
  setupMessage verbosity "Unregistering" pkgid
452 453
  withHcPkg "unregistering is only implemented for GHC and GHCJS"
    (compiler lbi) (withPrograms lbi) unreg
ijones's avatar
ijones committed
454

Duncan Coutts's avatar
Duncan Coutts committed
455 456 457 458
unregScriptFileName :: FilePath
unregScriptFileName = case buildOS of
                          Windows -> "unregister.bat"
                          _       -> "unregister.sh"