Safe Haskell	None
Language	Haskell2010

PackageSolver

Description

This is the central package of vabal-lib, it contains the functions to analyze a cabal package and determine which versions of ghc can comply with the constraints imposed on the following dependencies:

base
Cabal (only constraints in the setup-depends stanza are important)

Synopsis

analyzePackage :: FlagAssignment -> GhcDatabase -> GenericPackageDescription -> Set Version
doesGhcVersionSupportPackage :: FlagAssignment -> GhcDatabase -> GenericPackageDescription -> Version -> Bool

Documentation

analyzePackage Source #

Arguments

:: FlagAssignment	Flags to apply when configuring the project
-> GhcDatabase	Database containing metadata for all ghc versions to consider
-> GenericPackageDescription	The raw project description cabal file
-> Set Version	The versions of ghc that comply with the constraints of base and Cabal

analyzePackage uses the provided flag assignment to configure the package description. It returns a set of all ghc versions found in the GhcDatabase that satisfy the base and Cabal (only Cabal in setup-depends is considered) constraints.

doesGhcVersionSupportPackage Source #

Arguments

:: FlagAssignment	Flags to apply when configuring the project
-> GhcDatabase	Database containing metadata for all known ghc versions
-> GenericPackageDescription	The raw project description cabal file
-> Version	The version of ghc the user wants to use
-> Bool	Returns whether the version of ghc the user wants is fine

doesGhcVersionSupportPackage checks that the provided compiler version is able to comply with the constraints of base and Cabal (only Cabal in setup-depends is considered) of the package.