| Copyright | Isaac Jones 2003-2005 |
|---|---|
| License | BSD3 |
| Maintainer | cabal-devel@haskell.org |
| Portability | portable |
| Safe Haskell | None |
| Language | Haskell2010 |
Distribution.Types.PackageDescription
Description
This defines the data structure for the .cabal file format. There are
several parts to this structure. It has top level info and then Library,
Executable, TestSuite, and Benchmark sections each of which have
associated BuildInfo data that's used to build the library, exe, test, or
benchmark. To further complicate things there is both a PackageDescription
and a GenericPackageDescription. This distinction relates to cabal
configurations. When we initially read a .cabal file we get a
GenericPackageDescription which has all the conditional sections.
Before actually building a package we have to decide
on each conditional. Once we've done that we get a PackageDescription.
It was done this way initially to avoid breaking too much stuff when the
feature was introduced. It could probably do with being rationalised at some
point to make it simpler.
- data PackageDescription = PackageDescription {
- specVersionRaw :: Either Version VersionRange
- package :: PackageIdentifier
- licenseRaw :: Either License License
- licenseFiles :: [FilePath]
- copyright :: String
- maintainer :: String
- author :: String
- stability :: String
- testedWith :: [(CompilerFlavor, VersionRange)]
- homepage :: String
- pkgUrl :: String
- bugReports :: String
- sourceRepos :: [SourceRepo]
- synopsis :: String
- description :: String
- category :: String
- customFieldsPD :: [(String, String)]
- buildDepends :: [Dependency]
- buildTypeRaw :: Maybe BuildType
- setupBuildInfo :: Maybe SetupBuildInfo
- library :: Maybe Library
- subLibraries :: [Library]
- executables :: [Executable]
- foreignLibs :: [ForeignLib]
- testSuites :: [TestSuite]
- benchmarks :: [Benchmark]
- dataFiles :: [FilePath]
- dataDir :: FilePath
- extraSrcFiles :: [FilePath]
- extraTmpFiles :: [FilePath]
- extraDocFiles :: [FilePath]
- specVersion :: PackageDescription -> Version
- specVersion' :: Either Version VersionRange -> Version
- license :: PackageDescription -> License
- license' :: Either License License -> License
- descCabalVersion :: PackageDescription -> VersionRange
- buildType :: PackageDescription -> BuildType
- emptyPackageDescription :: PackageDescription
- hasPublicLib :: PackageDescription -> Bool
- hasLibs :: PackageDescription -> Bool
- allLibraries :: PackageDescription -> [Library]
- withLib :: PackageDescription -> (Library -> IO ()) -> IO ()
- hasExes :: PackageDescription -> Bool
- withExe :: PackageDescription -> (Executable -> IO ()) -> IO ()
- hasTests :: PackageDescription -> Bool
- withTest :: PackageDescription -> (TestSuite -> IO ()) -> IO ()
- hasBenchmarks :: PackageDescription -> Bool
- withBenchmark :: PackageDescription -> (Benchmark -> IO ()) -> IO ()
- hasForeignLibs :: PackageDescription -> Bool
- withForeignLib :: PackageDescription -> (ForeignLib -> IO ()) -> IO ()
- allBuildInfo :: PackageDescription -> [BuildInfo]
- enabledBuildInfos :: PackageDescription -> ComponentRequestedSpec -> [BuildInfo]
- updatePackageDescription :: HookedBuildInfo -> PackageDescription -> PackageDescription
- pkgComponents :: PackageDescription -> [Component]
- pkgBuildableComponents :: PackageDescription -> [Component]
- enabledComponents :: PackageDescription -> ComponentRequestedSpec -> [Component]
- lookupComponent :: PackageDescription -> ComponentName -> Maybe Component
- getComponent :: PackageDescription -> ComponentName -> Component
Documentation
data PackageDescription #
This data type is the internal representation of the file pkg.cabal.
It contains two kinds of information about the package: information
which is needed for all packages, such as the package name and version, and
information which is needed for the simple build system only, such as
the compiler options and library name.
Constructors
| PackageDescription | |
Fields
| |
specVersion :: PackageDescription -> Version #
The version of the Cabal spec that this package should be interpreted against.
Historically we used a version range but we are switching to using a single version. Currently we accept either. This function converts into a single version by ignoring upper bounds in the version range.
specVersion' :: Either Version VersionRange -> Version #
Since: 2.2.0.0
license :: PackageDescription -> License #
The SPDX LicenseExpression of the package.
Since: 2.2.0.0
descCabalVersion :: PackageDescription -> VersionRange #
Deprecated: Use specVersion instead. This symbol will be removed in Cabal-3.0 (est. Oct 2018).
The range of versions of the Cabal tools that this package is intended to work with.
This function is deprecated and should not be used for new purposes, only to support old packages that rely on the old interpretation.
buildType :: PackageDescription -> BuildType #
The effective build-type after applying defaulting rules.
The original build-type value parsed is stored in the
buildTypeRaw field. However, the build-type field is optional
and can therefore be empty in which case we need to compute the
effective build-type. This function implements the following
defaulting rules:
- For
cabal-version:2.0and below, default to theCustombuild-type unconditionally. - Otherwise, if a
custom-setupstanza is defined, default to theCustombuild-type; else default toSimplebuild-type.
Since: 2.2
hasPublicLib :: PackageDescription -> Bool #
Does this package have a buildable PUBLIC library?
hasLibs :: PackageDescription -> Bool #
Does this package have any libraries?
allLibraries :: PackageDescription -> [Library] #
withLib :: PackageDescription -> (Library -> IO ()) -> IO () #
If the package description has a buildable library section,
call the given function with the library build info as argument.
You probably want withLibLBI if you have a LocalBuildInfo,
see the note in
Distribution.Types.ComponentRequestedSpec
for more information.
hasExes :: PackageDescription -> Bool #
does this package have any executables?
withExe :: PackageDescription -> (Executable -> IO ()) -> IO () #
Perform the action on each buildable Executable in the package
description. You probably want withExeLBI if you have a
LocalBuildInfo, see the note in
Distribution.Types.ComponentRequestedSpec
for more information.
hasTests :: PackageDescription -> Bool #
Does this package have any test suites?
withTest :: PackageDescription -> (TestSuite -> IO ()) -> IO () #
Perform an action on each buildable TestSuite in a package.
You probably want withTestLBI if you have a LocalBuildInfo, see the note in
Distribution.Types.ComponentRequestedSpec
for more information.
hasBenchmarks :: PackageDescription -> Bool #
Does this package have any benchmarks?
withBenchmark :: PackageDescription -> (Benchmark -> IO ()) -> IO () #
Perform an action on each buildable Benchmark in a package.
You probably want withBenchLBI if you have a LocalBuildInfo, see the note in
Distribution.Types.ComponentRequestedSpec
for more information.
hasForeignLibs :: PackageDescription -> Bool #
Does this package have any foreign libraries?
withForeignLib :: PackageDescription -> (ForeignLib -> IO ()) -> IO () #
Perform the action on each buildable ForeignLib in the package
description.
allBuildInfo :: PackageDescription -> [BuildInfo] #
All BuildInfo in the PackageDescription:
libraries, executables, test-suites and benchmarks.
Useful for implementing package checks.
enabledBuildInfos :: PackageDescription -> ComponentRequestedSpec -> [BuildInfo] #
Return all of the BuildInfos of enabled components, i.e., all of
the ones that would be built if you run ./Setup build.
pkgComponents :: PackageDescription -> [Component] #
All the components in the package.
pkgBuildableComponents :: PackageDescription -> [Component] #
A list of all components in the package that are buildable,
i.e., were not marked with buildable: False. This does NOT
indicate if we are actually going to build the component,
see enabledComponents instead.
Since: 2.0.0.2
enabledComponents :: PackageDescription -> ComponentRequestedSpec -> [Component] #
A list of all components in the package that are enabled.
Since: 2.0.0.2