Distribution.PackageDescription

Cabal-1.22.5.0: A framework for packaging Haskell software

Copyright | Isaac Jones 2003-2005
License | BSD3
Maintainer | cabal-devel@haskell.org
Portability | portable
Safe Haskell | Safe
Language | Haskell98

Distribution.PackageDescription

Contents

- Package descriptions
  - Renaming
  - Libraries
  - Executables
- Tests
- Benchmarks
- Build information
  - Supplementary build information
- package configuration
- Source repositories

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.

Synopsis

- data PackageDescription = PackageDescription {
  - package :: PackageIdentifier
  - 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]
  - specVersionRaw :: Either Version VersionRange
  - buildType :: Maybe BuildType
  - library :: Maybe Library
  - executables :: [Executable]
  - testSuites :: [TestSuite]
  - benchmarks :: [Benchmark]
  - dataFiles :: [FilePath]
  - dataDir :: FilePath
  - extraSrcFiles :: [FilePath]
  - extraTmpFiles :: [FilePath]
  - extraDocFiles :: [FilePath]
  }
- emptyPackageDescription :: PackageDescription
- specVersion :: PackageDescription -> Version
- descCabalVersion :: PackageDescription -> VersionRange
- data BuildType
  - = Simple
  - | Configure
  - | Make
  - | Custom
  - | UnknownBuildType String
- knownBuildTypes :: [BuildType]
- data ModuleRenaming = ModuleRenaming Bool [(ModuleName, ModuleName)]
- defaultRenaming :: ModuleRenaming
- lookupRenaming :: Package pkg => pkg -> Map PackageName ModuleRenaming -> ModuleRenaming
- data Library = Library {
  - exposedModules :: [ModuleName]
  - reexportedModules :: [ModuleReexport]
  - requiredSignatures :: [ModuleName]
  - exposedSignatures :: [ModuleName]
  - libExposed :: Bool
  - libBuildInfo :: BuildInfo
  }
- data ModuleReexport = ModuleReexport {
  - moduleReexportOriginalPackage :: Maybe PackageName
  - moduleReexportOriginalName :: ModuleName
  - moduleReexportName :: ModuleName
  }
- emptyLibrary :: Library
- withLib :: PackageDescription -> (Library -> IO ()) -> IO ()
- hasLibs :: PackageDescription -> Bool
- libModules :: Library -> [ModuleName]
- data Executable = Executable {
  - exeName :: String
  - modulePath :: FilePath
  - buildInfo :: BuildInfo
  }
- emptyExecutable :: Executable
- withExe :: PackageDescription -> (Executable -> IO ()) -> IO ()
- hasExes :: PackageDescription -> Bool
- exeModules :: Executable -> [ModuleName]
- data TestSuite = TestSuite {
  - testName :: String
  - testInterface :: TestSuiteInterface
  - testBuildInfo :: BuildInfo
  - testEnabled :: Bool
  }
- data TestSuiteInterface
  - = TestSuiteExeV10 Version FilePath
  - | TestSuiteLibV09 Version ModuleName
  - | TestSuiteUnsupported TestType
- data TestType
  - = TestTypeExe Version
  - | TestTypeLib Version
  - | TestTypeUnknown String Version
- testType :: TestSuite -> TestType
- knownTestTypes :: [TestType]
- emptyTestSuite :: TestSuite
- hasTests :: PackageDescription -> Bool
- withTest :: PackageDescription -> (TestSuite -> IO ()) -> IO ()
- testModules :: TestSuite -> [ModuleName]
- enabledTests :: PackageDescription -> [TestSuite]
- data Benchmark = Benchmark {
  - benchmarkName :: String
  - benchmarkInterface :: BenchmarkInterface
  - benchmarkBuildInfo :: BuildInfo
  - benchmarkEnabled :: Bool
  }
- data BenchmarkInterface
  - = BenchmarkExeV10 Version FilePath
  - | BenchmarkUnsupported BenchmarkType
- data BenchmarkType
  - = BenchmarkTypeExe Version
  - | BenchmarkTypeUnknown String Version
- benchmarkType :: Benchmark -> BenchmarkType
- knownBenchmarkTypes :: [BenchmarkType]
- emptyBenchmark :: Benchmark
- hasBenchmarks :: PackageDescription -> Bool
- withBenchmark :: PackageDescription -> (Benchmark -> IO ()) -> IO ()
- benchmarkModules :: Benchmark -> [ModuleName]
- enabledBenchmarks :: PackageDescription -> [Benchmark]
- data BuildInfo = BuildInfo {
  - buildable :: Bool
  - buildTools :: [Dependency]
  - cppOptions :: [String]
  - ccOptions :: [String]
  - ldOptions :: [String]
  - pkgconfigDepends :: [Dependency]
  - frameworks :: [String]
  - cSources :: [FilePath]
  - jsSources :: [FilePath]
  - hsSourceDirs :: [FilePath]
  - otherModules :: [ModuleName]
  - defaultLanguage :: Maybe Language
  - otherLanguages :: [Language]
  - defaultExtensions :: [Extension]
  - otherExtensions :: [Extension]
  - oldExtensions :: [Extension]
  - extraLibs :: [String]
  - extraGHCiLibs :: [String]
  - extraLibDirs :: [String]
  - includeDirs :: [FilePath]
  - includes :: [FilePath]
  - installIncludes :: [FilePath]
  - options :: [(CompilerFlavor, [String])]
  - profOptions :: [(CompilerFlavor, [String])]
  - sharedOptions :: [(CompilerFlavor, [String])]
  - customFieldsBI :: [(String, String)]
  - targetBuildDepends :: [Dependency]
  - targetBuildRenaming :: Map PackageName ModuleRenaming
  }
- emptyBuildInfo :: BuildInfo
- allBuildInfo :: PackageDescription -> [BuildInfo]
- allLanguages :: BuildInfo -> [Language]
- allExtensions :: BuildInfo -> [Extension]
- usedExtensions :: BuildInfo -> [Extension]
- hcOptions :: CompilerFlavor -> BuildInfo -> [String]
- hcProfOptions :: CompilerFlavor -> BuildInfo -> [String]
- hcSharedOptions :: CompilerFlavor -> BuildInfo -> [String]
- type HookedBuildInfo = (Maybe BuildInfo, [(String, BuildInfo)])
- emptyHookedBuildInfo :: HookedBuildInfo
- updatePackageDescription :: HookedBuildInfo -> PackageDescription -> PackageDescription
- data GenericPackageDescription = GenericPackageDescription {
  - packageDescription :: PackageDescription
  - genPackageFlags :: [Flag]
  - condLibrary :: Maybe (CondTree ConfVar [Dependency] Library)
  - condExecutables :: [(String, CondTree ConfVar [Dependency] Executable)]
  - condTestSuites :: [(String, CondTree ConfVar [Dependency] TestSuite)]
  - condBenchmarks :: [(String, CondTree ConfVar [Dependency] Benchmark)]
  }
- data Flag = MkFlag {
  - flagName :: FlagName
  - flagDescription :: String
  - flagDefault :: Bool
  - flagManual :: Bool
  }
- newtype FlagName = FlagName String
- type FlagAssignment = [(FlagName, Bool)]
- data CondTree v c a = CondNode {
  - condTreeData :: a
  - condTreeConstraints :: c
  - condTreeComponents :: [(Condition v, CondTree v c a, Maybe (CondTree v c a))]
  }
- data ConfVar
  - = OS OS
  - | Arch Arch
  - | Flag FlagName
  - | Impl CompilerFlavor VersionRange
- data Condition c
  - = Var c
  - | Lit Bool
  - | CNot (Condition c)
  - | COr (Condition c) (Condition c)
  - | CAnd (Condition c) (Condition c)
- data SourceRepo = SourceRepo {
  - repoKind :: RepoKind
  - repoType :: Maybe RepoType
  - repoLocation :: Maybe String
  - repoModule :: Maybe String
  - repoBranch :: Maybe String
  - repoTag :: Maybe String
  - repoSubdir :: Maybe FilePath
  }
- data RepoKind
  - = RepoHead
  - | RepoThis
  - | RepoKindUnknown String
- data RepoType
  - = Darcs
  - | Git
  - | SVN
  - | CVS
  - | Mercurial
  - | GnuArch
  - | Bazaar
  - | Monotone
  - | OtherRepoType String
- knownRepoTypes :: [RepoType]

# Package descriptions

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 package :: PackageIdentifier 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 A one-line summary of this package description :: String A more verbose description of this package category :: String customFieldsPD :: [(String, String)] Custom fields starting with x-, stored in a simple assoc-list. | YOU PROBABLY DON'T WANT TO USE THIS FIELD. This field is special! Depending on how far along processing the PackageDescription we are, the contents of this field are either nonsense, or the collected dependencies of *all* the components in this package. buildDepends is initialized by `finalizePackageDescription` and `flattenPackageDescription`; prior to that, dependency info is stored in the `CondTree` built around a `GenericPackageDescription`. When this resolution is done, dependency info is written to the inner `BuildInfo` and this field. This is all horrible, and #2066 tracks progress to get rid of this field. buildDepends :: [Dependency] specVersionRaw :: Either Version VersionRange The version of the Cabal spec that this package description uses. For historical reasons this is specified with a version range but only ranges of the form `>= v` make sense. We are in the process of transitioning to specifying just a single version, not a range. buildType :: Maybe BuildType library :: Maybe Library executables :: [Executable] testSuites :: [TestSuite] benchmarks :: [Benchmark] dataFiles :: [FilePath] dataDir :: FilePath extraSrcFiles :: [FilePath] extraTmpFiles :: [FilePath] extraDocFiles :: [FilePath]

Instances

Eq PackageDescription |
Data PackageDescription |
Read PackageDescription |
Show PackageDescription |
Generic PackageDescription |
Binary PackageDescription |
Package PackageDescription |
type Rep PackageDescription |

emptyPackageDescription :: PackageDescription

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.

descCabalVersion :: PackageDescription -> VersionRange

Deprecated: Use specVersion instead

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.

data BuildType

The type of build system used by this package.

Constructors

Simple | calls `Distribution.Simple.defaultMain`
Configure | calls `Distribution.Simple.defaultMainWithHooks defaultUserHooks`, which invokes `configure` to generate additional build information used by later phases.
Make | calls `Distribution.Make.defaultMain`
Custom | uses user-supplied `Setup.hs` or `Setup.lhs` (default)
UnknownBuildType String | a package that uses an unknown build type cannot actually be built. Doing it this way rather than just giving a parse error means we get better error messages and allows you to inspect the rest of the package description.

Instances

Eq BuildType |
Data BuildType |
Read BuildType |
Show BuildType |
Generic BuildType |
Binary BuildType |
Text BuildType |
type Rep BuildType |

knownBuildTypes :: [BuildType]

## Renaming

data ModuleRenaming

Renaming applied to the modules provided by a package. The boolean indicates whether or not to also include all of the original names of modules. Thus, `ModuleRenaming False []` is "don't expose any modules, and `ModuleRenaming True [(Data.Bool, Bool)]` is, "expose all modules, but also expose `Data.Bool` as `Bool`".

Constructors

ModuleRenaming Bool [(ModuleName, ModuleName)] |

Instances

Eq ModuleRenaming |
Data ModuleRenaming |
Ord ModuleRenaming |
Read ModuleRenaming |
Show ModuleRenaming |
Generic ModuleRenaming |
Monoid ModuleRenaming |
Binary ModuleRenaming |
Text ModuleRenaming |
type Rep ModuleRenaming |

defaultRenaming :: ModuleRenaming

lookupRenaming :: Package pkg => pkg -> Map PackageName ModuleRenaming -> ModuleRenaming

## Libraries

data Library

Constructors

Library |
Fields exposedModules :: [ModuleName] reexportedModules :: [ModuleReexport] requiredSignatures :: [ModuleName] What sigs need implementations? exposedSignatures :: [ModuleName] What sigs are visible to users? libExposed :: Bool Is the lib to be exposed by default? libBuildInfo :: BuildInfo

Instances

Eq Library |
Data Library |
Read Library |
Show Library |
Generic Library |
Monoid Library |
Binary Library |
type Rep Library |

data ModuleReexport

Constructors

ModuleReexport |
Fields moduleReexportOriginalPackage :: Maybe PackageName moduleReexportOriginalName :: ModuleName moduleReexportName :: ModuleName

Instances

Eq ModuleReexport |
Data ModuleReexport |
Read ModuleReexport |
Show ModuleReexport |
Generic ModuleReexport |
Binary ModuleReexport |
Text ModuleReexport |
type Rep ModuleReexport |

emptyLibrary :: Library

withLib :: PackageDescription -> (Library -> IO ()) -> IO ()

If the package description has a library section, call the given function with the library build info as argument.

hasLibs :: PackageDescription -> Bool

does this package have any libraries?

libModules :: Library -> [ModuleName]

Get all the module names from the library (exposed and internal modules) which need to be compiled. (This does not include reexports, which do not need to be compiled.)

## Executables

data Executable

Constructors

Executable |
Fields exeName :: String modulePath :: FilePath buildInfo :: BuildInfo

Instances

Eq Executable |
Data Executable |
Read Executable |
Show Executable |
Generic Executable |
Monoid Executable |
Binary Executable |
type Rep Executable |

emptyExecutable :: Executable

withExe :: PackageDescription -> (Executable -> IO ()) -> IO ()

Perform the action on each buildable `Executable` in the package description.

hasExes :: PackageDescription -> Bool

does this package have any executables?

exeModules :: Executable -> [ModuleName]

Get all the module names from an exe

# Tests

data TestSuite

A "test-suite" stanza in a cabal file.

Constructors

TestSuite |
Fields testName :: String testInterface :: TestSuiteInterface testBuildInfo :: BuildInfo testEnabled :: Bool

Instances

Eq TestSuite |
Data TestSuite |
Read TestSuite |
Show TestSuite |
Generic TestSuite |
Monoid TestSuite |
Binary TestSuite |
type Rep TestSuite |

data TestSuiteInterface

The test suite interfaces that are currently defined. Each test suite must specify which interface it supports.

More interfaces may be defined in future, either new revisions or totally new interfaces.

Constructors

TestSuiteExeV10 Version FilePath | Test interface "exitcode-stdio-1.0". The test-suite takes the form of an executable. It returns a zero exit code for success, non-zero for failure. The stdout and stderr channels may be logged. It takes no command line parameters and nothing on stdin.
TestSuiteLibV09 Version ModuleName | Test interface "detailed-0.9". The test-suite takes the form of a library containing a designated module that exports "tests :: [Test]".
TestSuiteUnsupported TestType | A test suite that does not conform to one of the above interfaces for the given reason (e.g. unknown test type).

Instances

Eq TestSuiteInterface |
Data TestSuiteInterface |
Read TestSuiteInterface |
Show TestSuiteInterface |
Generic TestSuiteInterface |
Monoid TestSuiteInterface |
Binary TestSuiteInterface |
type Rep TestSuiteInterface |

data TestType

The "test-type" field in the test suite stanza.

Constructors

TestTypeExe Version | "type: exitcode-stdio-x.y"
TestTypeLib Version | "type: detailed-x.y"
TestTypeUnknown String Version | Some unknown test type e.g. "type: foo"

Instances

Eq TestType |
Data TestType |
Read TestType |
Show TestType |
Generic TestType |
Binary TestType |
Text TestType |
type Rep TestType |

testType :: TestSuite -> TestType

knownTestTypes :: [TestType]

emptyTestSuite :: TestSuite

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.

testModules :: TestSuite -> [ModuleName]

Get all the module names from a test suite.

enabledTests :: PackageDescription -> [TestSuite]

Get all the enabled test suites from a package.

# Benchmarks

data Benchmark

A "benchmark" stanza in a cabal file.

Constructors

Benchmark |
Fields benchmarkName :: String benchmarkInterface :: BenchmarkInterface benchmarkBuildInfo :: BuildInfo benchmarkEnabled :: Bool

Instances

Eq Benchmark |
Data Benchmark |
Read Benchmark |
Show Benchmark |
Generic Benchmark |
Monoid Benchmark |
Binary Benchmark |
type Rep Benchmark |

data BenchmarkInterface

The benchmark interfaces that are currently defined. Each benchmark must specify which interface it supports.

More interfaces may be defined in future, either new revisions or totally new interfaces.

Constructors

BenchmarkExeV10 Version FilePath | Benchmark interface "exitcode-stdio-1.0". The benchmark takes the form of an executable. It returns a zero exit code for success, non-zero for failure. The stdout and stderr channels may be logged. It takes no command line parameters and nothing on stdin.
BenchmarkUnsupported BenchmarkType | A benchmark that does not conform to one of the above interfaces for the given reason (e.g. unknown benchmark type).

Instances

Eq BenchmarkInterface |
Data BenchmarkInterface |
Read BenchmarkInterface |
Show BenchmarkInterface |
Generic BenchmarkInterface |
Monoid BenchmarkInterface |
Binary BenchmarkInterface |
type Rep BenchmarkInterface |

data BenchmarkType

The "benchmark-type" field in the benchmark stanza.

Constructors

BenchmarkTypeExe Version | "type: exitcode-stdio-x.y"
BenchmarkTypeUnknown String Version | Some unknown benchmark type e.g. "type: foo"

Instances

Eq BenchmarkType |
Data BenchmarkType |
Read BenchmarkType |
Show BenchmarkType |
Generic BenchmarkType |
Binary BenchmarkType |
Text BenchmarkType |
type Rep BenchmarkType |

benchmarkType :: Benchmark -> BenchmarkType

knownBenchmarkTypes :: [BenchmarkType]

emptyBenchmark :: Benchmark

hasBenchmarks :: PackageDescription -> Bool

Does this package have any benchmarks?

withBenchmark :: PackageDescription -> (Benchmark -> IO ()) -> IO ()

Perform an action on each buildable `Benchmark` in a package.

benchmarkModules :: Benchmark -> [ModuleName]

Get all the module names from a benchmark.

enabledBenchmarks :: PackageDescription -> [Benchmark]

Get all the enabled benchmarks from a package.

# Build information

data BuildInfo

Constructors

BuildInfo |
Fields buildable :: Bool component is buildable here buildTools :: [Dependency] tools needed to build this bit cppOptions :: [String] options for pre-processing Haskell code ccOptions :: [String] options for C compiler ldOptions :: [String] options for linker pkgconfigDepends :: [Dependency] pkg-config packages that are used frameworks :: [String] support frameworks for Mac OS X cSources :: [FilePath] jsSources :: [FilePath] hsSourceDirs :: [FilePath] where to look for the Haskell module hierarchy otherModules :: [ModuleName] non-exposed or non-main modules defaultLanguage :: Maybe Language language used when not explicitly specified otherLanguages :: [Language] other languages used within the package defaultExtensions :: [Extension] language extensions used by all modules otherExtensions :: [Extension] other language extensions used within the package oldExtensions :: [Extension] the old extensions field, treated same as `defaultExtensions` extraLibs :: [String] what libraries to link with when compiling a program that uses your package extraGHCiLibs :: [String] if present, overrides extraLibs when package is loaded with GHCi. extraLibDirs :: [String] includeDirs :: [FilePath] directories to find .h files includes :: [FilePath] The .h files to be found in includeDirs installIncludes :: [FilePath] .h files to install with the package options :: [(CompilerFlavor, [String])] profOptions :: [(CompilerFlavor, [String])] sharedOptions :: [(CompilerFlavor, [String])] customFieldsBI :: [(String, String)] Custom fields starting with x-, stored in a simple assoc-list. targetBuildDepends :: [Dependency] Dependencies specific to a library or executable target targetBuildRenaming :: Map PackageName ModuleRenaming

Instances

Eq BuildInfo |
Data BuildInfo |
Read BuildInfo |
Show BuildInfo |
Generic BuildInfo |
Monoid BuildInfo |
Binary BuildInfo |
type Rep BuildInfo |

emptyBuildInfo :: BuildInfo

allBuildInfo :: PackageDescription -> [BuildInfo]

The `BuildInfo` for the library (if there is one and it's buildable), and all buildable executables, test suites and benchmarks. Useful for gathering dependencies.

allLanguages :: BuildInfo -> [Language]

The `Language`s used by this component

allExtensions :: BuildInfo -> [Extension]

The `Extension`s that are used somewhere by this component

usedExtensions :: BuildInfo -> [Extension]

The `Extensions` that are used by all modules in this component

hcOptions :: CompilerFlavor -> BuildInfo -> [String]

Select options for a particular Haskell compiler.

hcProfOptions :: CompilerFlavor -> BuildInfo -> [String]

hcSharedOptions :: CompilerFlavor -> BuildInfo -> [String]

## Supplementary build information

type HookedBuildInfo = (Maybe BuildInfo, [(String, BuildInfo)])

emptyHookedBuildInfo :: HookedBuildInfo

updatePackageDescription :: HookedBuildInfo -> PackageDescription -> PackageDescription

# package configuration

data GenericPackageDescription

Constructors

GenericPackageDescription |
Fields packageDescription :: PackageDescription genPackageFlags :: [Flag] condLibrary :: Maybe (CondTree ConfVar [Dependency] Library) condExecutables :: [(String, CondTree ConfVar [Dependency] Executable)] condTestSuites :: [(String, CondTree ConfVar [Dependency] TestSuite)] condBenchmarks :: [(String, CondTree ConfVar [Dependency] Benchmark)]

Instances

Eq GenericPackageDescription |
Data GenericPackageDescription |
Show GenericPackageDescription |
Package GenericPackageDescription |

data Flag

A flag can represent a feature to be included, or a way of linking a target against its dependencies, or in fact whatever you can think of.

Constructors

MkFlag |
Fields flagName :: FlagName flagDescription :: String flagDefault :: Bool flagManual :: Bool

Instances

Eq Flag |
Data Flag |
Show Flag |

newtype FlagName

A `FlagName` is the name of a user-defined configuration flag

Constructors

FlagName String |

Instances

Eq FlagName |
Data FlagName |
Ord FlagName |
Read FlagName |
Show FlagName |
Generic FlagName |
Binary FlagName |
type Rep FlagName |

type FlagAssignment = [(FlagName, Bool)]

A `FlagAssignment` is a total or partial mapping of `FlagName`s to `Bool` flag values. It represents the flags chosen by the user or discovered during configuration. For example `--flags=foo --flags=-bar` becomes `[("foo", True), ("bar", False)]`

data CondTree v c a

Constructors

CondNode |
Fields condTreeData :: a condTreeConstraints :: c condTreeComponents :: [(Condition v, CondTree v c a, Maybe (CondTree v c a))]

Instances

(Eq v, Eq c, Eq a) => Eq (CondTree v c a) |
(Data v, Data c, Data a) => Data (CondTree v c a) |
(Show v, Show c, Show a) => Show (CondTree v c a) |

data ConfVar

A `ConfVar` represents the variable type used.

Constructors

OS OS |
Arch Arch |
Flag FlagName |
Impl CompilerFlavor VersionRange |

Instances

Eq ConfVar |
Data ConfVar |
Show ConfVar |

data Condition c

A boolean expression parameterized over the variable type used.

Constructors

Var c |
Lit Bool |
CNot (Condition c) |
COr (Condition c) (Condition c) |
CAnd (Condition c) (Condition c) |

Instances

Eq c => Eq (Condition c) |
Data c => Data (Condition c) |
Show c => Show (Condition c) |

# Source repositories

data SourceRepo

Information about the source revision control system for a package.

When specifying a repo it is useful to know the meaning or intention of the information as doing so enables automation. There are two obvious common purposes: one is to find the repo for the latest development version, the other is to find the repo for this specific release. The `ReopKind` specifies which one we mean (or another custom one).

A package can specify one or the other kind or both. Most will specify just a head repo but some may want to specify a repo to reconstruct the sources for this package release.

The required information is the `RepoType` which tells us if it's using `Darcs`, `Git` for example. The `repoLocation` and other details are interpreted according to the repo type.

Constructors

SourceRepo |
Fields repoKind :: RepoKind The kind of repo. This field is required. repoType :: Maybe RepoType The type of the source repository system for this repo, eg `Darcs` or `Git`. This field is required. repoLocation :: Maybe String The location of the repository. For most `RepoType`s this is a URL. This field is required. repoModule :: Maybe String `CVS` can put multiple "modules" on one server and requires a module name in addition to the location to identify a particular repo. Logically this is part of the location but unfortunately has to be specified separately. This field is required for the `CVS` `RepoType` and should not be given otherwise. repoBranch :: Maybe String The name or identifier of the branch, if any. Many source control systems have the notion of multiple branches in a repo that exist in the same location. For example `Git` and `CVS` use this while systems like `Darcs` use different locations for different branches. This field is optional but should be used if necessary to identify the sources, especially for the `RepoThis` repo kind. repoTag :: Maybe String The tag identify a particular state of the repository. This should be given for the `RepoThis` repo kind and not for `RepoHead` kind. repoSubdir :: Maybe FilePath Some repositories contain multiple projects in different subdirectories This field specifies the subdirectory where this packages sources can be found, eg the subdirectory containing the `.cabal` file. It is interpreted relative to the root of the repository. This field is optional. If not given the default is "." ie no subdirectory.

Instances

Eq SourceRepo |
Data SourceRepo |
Read SourceRepo |
Show SourceRepo |
Generic SourceRepo |
Binary SourceRepo |
type Rep SourceRepo |

data RepoKind

What this repo info is for, what it represents.

Constructors

RepoHead | The repository for the "head" or development version of the project. This repo is where we should track the latest development activity or the usual repo people should get to contribute patches.
RepoThis | The repository containing the sources for this exact package version or release. For this kind of repo a tag should be given to give enough information to re-create the exact sources.
RepoKindUnknown String |

Instances

Eq RepoKind |
Data RepoKind |
Ord RepoKind |
Read RepoKind |
Show RepoKind |
Generic RepoKind |
Binary RepoKind |
Text RepoKind |
type Rep RepoKind |

data RepoType

An enumeration of common source control systems. The fields used in the `SourceRepo` depend on the type of repo. The tools and methods used to obtain and track the repo depend on the repo type.

Constructors

Darcs |
Git |
SVN |
CVS |
Mercurial |
GnuArch |
Bazaar |
Monotone |
OtherRepoType String |

Instances

Eq RepoType |
Data RepoType |
Ord RepoType |
Read RepoType |
Show RepoType |
Generic RepoType |
Binary RepoType |
Text RepoType |
type Rep RepoType |

knownRepoTypes :: [RepoType]