![](haskell_icon.gif) | Cabal-1.3.12: A framework for packaging Haskell software | Contents | Index |
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Distribution.Package | Portability | portable | Stability | alpha | Maintainer | Isaac Jones <ijones@syntaxpolice.org> |
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Description |
Packages are fundamentally just a name and a version.
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Synopsis |
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Package ids
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data PackageIdentifier |
The name and version of a package.
| Constructors | PackageIdentifier | | pkgName :: String | The name of this package, eg. foo
| pkgVersion :: Version | the version of this package, eg 1.2
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| Instances | |
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parsePackageName :: ReadP r String |
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Package dependencies
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data Dependency |
Constructors | | Instances | |
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thisPackageVersion :: PackageIdentifier -> Dependency |
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notThisPackageVersion :: PackageIdentifier -> Dependency |
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Package classes
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class Package pkg where |
Class of things that can be identified by a PackageIdentifier
Types in this class are all notions of a package. This allows us to have
different types for the different phases that packages go though, from
simple name/id, package description, configured or installed packages.
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packageName :: Package pkg => pkg -> String |
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packageVersion :: Package pkg => pkg -> Version |
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class Package pkg => PackageFixedDeps pkg where |
Subclass of packages that have specific versioned dependencies.
So for example a not-yet-configured package has dependencies on version
ranges, not specific versions. A configured or an already installed package
depends on exact versions. Some operations or data structures (like
dependency graphs) only make sense on this subclass of package types.
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Deprecated compat stuff
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showPackageId :: PackageIdentifier -> String |
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Produced by Haddock version 0.9 |