cabal-install-solver-3.10.1.0: The command-line interface for Cabal and Hackage.

Safe Haskell | Safe-Inferred
Language | Haskell2010

Distribution.Solver.Types.ConstraintSource

Synopsis

- data ConstraintSource
  - = ConstraintSourceMainConfig FilePath
  - | ConstraintSourceProjectConfig FilePath
  - | ConstraintSourceUserConfig FilePath
  - | ConstraintSourceCommandlineFlag
  - | ConstraintSourceUserTarget
  - | ConstraintSourceNonUpgradeablePackage
  - | ConstraintSourceFreeze
  - | ConstraintSourceConfigFlagOrTarget
  - | ConstraintSourceUnknown
  - | ConstraintSetupCabalMinVersion
  - | ConstraintSetupCabalMaxVersion
- showConstraintSource :: ConstraintSource -> String

# Documentation

data ConstraintSource #

Source of a `PackageConstraint`.

Constructors

ConstraintSourceMainConfig FilePath | Main config file, which is ~.cabalconfig by default.
ConstraintSourceProjectConfig FilePath | Local cabal.project file
ConstraintSourceUserConfig FilePath | User config file, which is ./cabal.config by default.
ConstraintSourceCommandlineFlag | Flag specified on the command line.
ConstraintSourceUserTarget | Target specified by the user, e.g., `cabal install package-0.1.0.0` implies `package==0.1.0.0`.
ConstraintSourceNonUpgradeablePackage | Internal requirement to use installed versions of packages like ghc-prim.
ConstraintSourceFreeze | Internal constraint used by `cabal freeze`.
ConstraintSourceConfigFlagOrTarget | Constraint specified by a config file, a command line flag, or a user target, when a more specific source is not known.
ConstraintSourceUnknown | The source of the constraint is not specified.
ConstraintSetupCabalMinVersion | An internal constraint due to compatibility issues with the Setup.hs command line interface requires a minimum lower bound on Cabal
ConstraintSetupCabalMaxVersion | An internal constraint due to compatibility issues with the Setup.hs command line interface requires a maximum upper bound on Cabal

#### Instances

Instances details

Structured ConstraintSource # |
Instance details Defined in Distribution.Solver.Types.ConstraintSource Methods structure :: Proxy ConstraintSource -> Structure structureHash' :: Tagged ConstraintSource MD5
Generic ConstraintSource # |
Instance details Defined in Distribution.Solver.Types.ConstraintSource Associated Types type Rep ConstraintSource :: Type -> Type Methods from :: ConstraintSource -> Rep ConstraintSource x to :: Rep ConstraintSource x -> ConstraintSource
Show ConstraintSource # |
Instance details Defined in Distribution.Solver.Types.ConstraintSource Methods showsPrec :: Int -> ConstraintSource -> ShowS # show :: ConstraintSource -> String # showList :: [ConstraintSource] -> ShowS #
Binary ConstraintSource # |
Instance details Defined in Distribution.Solver.Types.ConstraintSource Methods put :: ConstraintSource -> Put # get :: Get ConstraintSource # putList :: [ConstraintSource] -> Put #
Eq ConstraintSource # |
Instance details Defined in Distribution.Solver.Types.ConstraintSource Methods (==) :: ConstraintSource -> ConstraintSource -> Bool # (/=) :: ConstraintSource -> ConstraintSource -> Bool #
type Rep ConstraintSource # |
Instance details Defined in Distribution.Solver.Types.ConstraintSource type Rep ConstraintSource = D1 ('MetaData "ConstraintSource" "Distribution.Solver.Types.ConstraintSource" "cabal-install-solver-3.10.1.0-4I9p4uuKME01q5xZ1JjXoT" 'False) (((C1 ('MetaCons "ConstraintSourceMainConfig" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 FilePath)) :+: C1 ('MetaCons "ConstraintSourceProjectConfig" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 FilePath))) :+: (C1 ('MetaCons "ConstraintSourceUserConfig" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 FilePath)) :+: (C1 ('MetaCons "ConstraintSourceCommandlineFlag" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "ConstraintSourceUserTarget" 'PrefixI 'False) (U1 :: Type -> Type)))) :+: ((C1 ('MetaCons "ConstraintSourceNonUpgradeablePackage" 'PrefixI 'False) (U1 :: Type -> Type) :+: (C1 ('MetaCons "ConstraintSourceFreeze" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "ConstraintSourceConfigFlagOrTarget" 'PrefixI 'False) (U1 :: Type -> Type))) :+: (C1 ('MetaCons "ConstraintSourceUnknown" 'PrefixI 'False) (U1 :: Type -> Type) :+: (C1 ('MetaCons "ConstraintSetupCabalMinVersion" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "ConstraintSetupCabalMaxVersion" 'PrefixI 'False) (U1 :: Type -> Type)))))

showConstraintSource :: ConstraintSource -> String #

Description of a `ConstraintSource`.