License	GPL-3
Maintainer	cabal-helper@dxld.at
Portability	POSIX
Safe Haskell	None
Language	Haskell2010

Distribution.Helper

Contents

Running Queries
Queries against Cabal's on disk state
Query environment
Result types
General information
Stuff that cabal-install really should export
Managing dist/
$libexec related error handling
Reexports

Description

Synopsis

data Query m a
runQuery :: Monad m => QueryEnv -> Query m a -> m a
packageId :: MonadIO m => Query m (String, Version)
packageDbStack :: MonadIO m => Query m [ChPkgDb]
packageFlags :: MonadIO m => Query m [(String, Bool)]
compilerVersion :: MonadIO m => Query m (String, Version)
ghcMergedPkgOptions :: MonadIO m => Query m [String]
configFlags :: MonadIO m => Query m [(String, Bool)]
nonDefaultConfigFlags :: MonadIO m => Query m [(String, Bool)]
data ComponentQuery m a
components :: Monad m => ComponentQuery m (ChComponentName -> b) -> Query m [b]
ghcSrcOptions :: MonadIO m => ComponentQuery m [String]
ghcPkgOptions :: MonadIO m => ComponentQuery m [String]
ghcLangOptions :: MonadIO m => ComponentQuery m [String]
ghcOptions :: MonadIO m => ComponentQuery m [String]
sourceDirs :: MonadIO m => ComponentQuery m [FilePath]
entrypoints :: MonadIO m => ComponentQuery m ChEntrypoint
needsBuildOutput :: MonadIO m => ComponentQuery m NeedsBuildOutput
data QueryEnv
mkQueryEnv :: FilePath -> FilePath -> QueryEnv
qeReadProcess :: QueryEnv -> FilePath -> [String] -> String -> IO String
qePrograms :: QueryEnv -> Programs
qeProjectDir :: QueryEnv -> FilePath
qeDistDir :: QueryEnv -> FilePath
qeCabalPkgDb :: QueryEnv -> Maybe FilePath
qeCabalVer :: QueryEnv -> Maybe Version
data Programs = Programs {
- cabalProgram :: FilePath
- ghcProgram :: FilePath
- ghcPkgProgram :: FilePath
}
defaultPrograms :: Programs
newtype ChModuleName = ChModuleName String
data ChComponentName
- = ChSetupHsName
- | ChLibName
- | ChSubLibName String
- | ChFLibName String
- | ChExeName String
- | ChTestName String
- | ChBenchName String
data ChPkgDb
- = ChPkgGlobal
- | ChPkgUser
- | ChPkgSpecific FilePath
data ChEntrypoint
- = ChSetupEntrypoint
- | ChLibEntrypoint {
  - chExposedModules :: [ChModuleName]
  - chOtherModules :: [ChModuleName]
  - chSignatures :: [ChModuleName]
  }
- | ChExeEntrypoint {
  - chMainIs :: FilePath
  - chOtherModules :: [ChModuleName]
  }
data NeedsBuildOutput
- = ProduceBuildOutput
- | NoBuildOutput
buildPlatform :: (FilePath -> [String] -> String -> IO String) -> IO String
getSandboxPkgDb :: (FilePath -> [String] -> String -> IO String) -> String -> Version -> IO (Maybe FilePath)
prepare :: MonadIO m => QueryEnv -> m ()
reconfigure :: MonadIO m => (FilePath -> [String] -> String -> IO String) -> Programs -> [String] -> m ()
writeAutogenFiles :: MonadIO m => QueryEnv -> m ()
data LibexecNotFoundError = LibexecNotFoundError String FilePath
libexecNotFoundError :: String -> FilePath -> String -> String

Running Queries

data Query m a Source #

A lazy, cached, query against a package's Cabal configuration. Use runQuery to execute it.

Instances

MonadTrans Query Source #
Instance details Defined in Distribution.Helper Methods lift :: Monad m => m a -> Query m a
Monad m => Monad (Query m) Source #
Instance details Defined in Distribution.Helper Methods (>>=) :: Query m a -> (a -> Query m b) -> Query m b (>>) :: Query m a -> Query m b -> Query m b return :: a -> Query m a fail :: String -> Query m a
Functor m => Functor (Query m) Source #
Instance details Defined in Distribution.Helper Methods fmap :: (a -> b) -> Query m a -> Query m b (<$) :: a -> Query m b -> Query m a
Monad m => Applicative (Query m) Source #
Instance details Defined in Distribution.Helper Methods pure :: a -> Query m a (<>) :: Query m (a -> b) -> Query m a -> Query m b liftA2 :: (a -> b -> c) -> Query m a -> Query m b -> Query m c (>) :: Query m a -> Query m b -> Query m b (<*) :: Query m a -> Query m b -> Query m a
MonadIO m => MonadIO (Query m) Source #
Instance details Defined in Distribution.Helper Methods liftIO :: IO a -> Query m a

runQuery :: Monad m => QueryEnv -> Query m a -> m a Source #

runQuery env query. Run a Query under a given QueryEnv.

Queries against Cabal's on disk state

Package queries

packageId :: MonadIO m => Query m (String, Version) Source #

Package identifier, i.e. package name and version

packageDbStack :: MonadIO m => Query m [ChPkgDb] Source #

List of package databases to use.

packageFlags :: MonadIO m => Query m [(String, Bool)] Source #

Flag definitions from cabal file

compilerVersion :: MonadIO m => Query m (String, Version) Source #

The version of GHC the project is configured to use

ghcMergedPkgOptions :: MonadIO m => Query m [String] Source #

Like ghcPkgOptions but for the whole package not just one component

cabal-install queries

configFlags :: MonadIO m => Query m [(String, Bool)] Source #

Flag assignments from setup-config

nonDefaultConfigFlags :: MonadIO m => Query m [(String, Bool)] Source #

Flag assignments from setup-config which differ from the default setting. This can also include flags which cabal decided to modify, i.e. don't rely on these being the flags set by the user directly.

Component queries

data ComponentQuery m a Source #

A Query to run on all components of a package. Use components to get a regular Query.

Instances

Functor m => Functor (ComponentQuery m) Source #
Instance details Defined in Distribution.Helper Methods fmap :: (a -> b) -> ComponentQuery m a -> ComponentQuery m b (<$) :: a -> ComponentQuery m b -> ComponentQuery m a
(Functor m, Monad m) => Apply (ComponentQuery m) Source #
Instance details Defined in Distribution.Helper Methods (<.>) :: ComponentQuery m (a -> b) -> ComponentQuery m a -> ComponentQuery m b (.>) :: ComponentQuery m a -> ComponentQuery m b -> ComponentQuery m b (<.) :: ComponentQuery m a -> ComponentQuery m b -> ComponentQuery m a liftF2 :: (a -> b -> c) -> ComponentQuery m a -> ComponentQuery m b -> ComponentQuery m c

components :: Monad m => ComponentQuery m (ChComponentName -> b) -> Query m [b] Source #

Run a ComponentQuery on all components of the package.

ghcSrcOptions :: MonadIO m => ComponentQuery m [String] Source #

Only search path related GHC options.

ghcPkgOptions :: MonadIO m => ComponentQuery m [String] Source #

Only package related GHC options, sufficient for things don't need to access any home modules.

ghcLangOptions :: MonadIO m => ComponentQuery m [String] Source #

Only language related options, i.e. -XSomeExtension

ghcOptions :: MonadIO m => ComponentQuery m [String] Source #

All options Cabal would pass to GHC.

sourceDirs :: MonadIO m => ComponentQuery m [FilePath] Source #

A component's source-dirs field, beware since if this is empty implicit behaviour in GHC kicks in.

entrypoints :: MonadIO m => ComponentQuery m ChEntrypoint Source #

Modules or files Cabal would have the compiler build directly. Can be used to compute the home module closure for a component.

needsBuildOutput :: MonadIO m => ComponentQuery m NeedsBuildOutput Source #

The component has a non-default module renaming, so needs build output ().

Query environment

data QueryEnv Source #

Environment for running a Query. The real constructor is not exposed, the field accessors are however. See below. Use the mkQueryEnv smart constructor to construct one.

mkQueryEnv Source #

Arguments

:: FilePath	Path to the project directory, i.e. the directory containing a `project.cabal` file
-> FilePath	Path to the `dist/` directory, called builddir in Cabal terminology.
-> QueryEnv

mkQueryEnv projdir distdir. Smart constructor for QueryEnv. Sets fields qeProjectDir and qeDistDir to projdir and distdir respectively and provides sensible defaults for the other fields.

qeReadProcess :: QueryEnv -> FilePath -> [String] -> String -> IO String Source #

Field accessor for QueryEnv. Defines how to start the cabal-helper process. Useful if you need to capture stderr output from the helper.

qePrograms :: QueryEnv -> Programs Source #

Field accessor for QueryEnv.

qeProjectDir :: QueryEnv -> FilePath Source #

Field accessor for QueryEnv. Defines path to the project directory, i.e. a directory containing a project.cabal file

qeDistDir :: QueryEnv -> FilePath Source #

Field accessor for QueryEnv. Defines path to the dist/ directory, builddir in Cabal terminology.

qeCabalPkgDb :: QueryEnv -> Maybe FilePath Source #

Field accessor for QueryEnv. Defines where to look for the Cabal library when linking the helper.

qeCabalVer :: QueryEnv -> Maybe Version Source #

Field accessor for QueryEnv. If dist/setup-config wasn't written by this version of Cabal an error is thrown when running the query.

data Programs Source #

Paths or names of various programs we need.

Constructors

Programs
Fields cabalProgram :: FilePath The path to the `cabal` program. ghcProgram :: FilePath The path to the `ghc` program. ghcPkgProgram :: FilePath The path to the `ghc-pkg` program. If not changed it will be derived from the path to `ghcProgram`.

Instances

Eq Programs Source #
Instance details Defined in Distribution.Helper Methods (==) :: Programs -> Programs -> Bool (/=) :: Programs -> Programs -> Bool
Ord Programs Source #
Instance details Defined in Distribution.Helper Methods compare :: Programs -> Programs -> Ordering (<) :: Programs -> Programs -> Bool (<=) :: Programs -> Programs -> Bool (>) :: Programs -> Programs -> Bool (>=) :: Programs -> Programs -> Bool max :: Programs -> Programs -> Programs min :: Programs -> Programs -> Programs
Read Programs Source #
Instance details Defined in Distribution.Helper Methods readsPrec :: Int -> ReadS Programs readList :: ReadS [Programs] readPrec :: ReadPrec Programs readListPrec :: ReadPrec [Programs]
Show Programs Source #
Instance details Defined in Distribution.Helper Methods showsPrec :: Int -> Programs -> ShowS show :: Programs -> String showList :: [Programs] -> ShowS
Generic Programs Source #
Instance details Defined in Distribution.Helper Associated Types type Rep Programs :: Type -> Type Methods from :: Programs -> Rep Programs x to :: Rep Programs x -> Programs
type Rep Programs Source #
Instance details Defined in Distribution.Helper type Rep Programs = D1 (MetaData "Programs" "Distribution.Helper" "cabal-helper-0.8.2.0-G0MHCaq5g7W1McsrhclLQ1" False) (C1 (MetaCons "Programs" PrefixI True) (S1 (MetaSel (Just "cabalProgram") NoSourceUnpackedness NoSourceStrictness DecidedLazy) (Rec0 FilePath) :: (S1 (MetaSel (Just "ghcProgram") NoSourceUnpackedness NoSourceStrictness DecidedLazy) (Rec0 FilePath) :: S1 (MetaSel (Just "ghcPkgProgram") NoSourceUnpackedness NoSourceStrictness DecidedLazy) (Rec0 FilePath))))

defaultPrograms :: Programs Source #

Default all programs to their unqualified names, i.e. they will be searched for on PATH.

Result types

newtype ChModuleName Source #

Constructors

ChModuleName String

Instances

Eq ChModuleName Source #
Instance details Defined in CabalHelper.Shared.InterfaceTypes Methods (==) :: ChModuleName -> ChModuleName -> Bool (/=) :: ChModuleName -> ChModuleName -> Bool
Ord ChModuleName Source #
Instance details Defined in CabalHelper.Shared.InterfaceTypes Methods compare :: ChModuleName -> ChModuleName -> Ordering (<) :: ChModuleName -> ChModuleName -> Bool (<=) :: ChModuleName -> ChModuleName -> Bool (>) :: ChModuleName -> ChModuleName -> Bool (>=) :: ChModuleName -> ChModuleName -> Bool max :: ChModuleName -> ChModuleName -> ChModuleName min :: ChModuleName -> ChModuleName -> ChModuleName
Read ChModuleName Source #
Instance details Defined in CabalHelper.Shared.InterfaceTypes Methods readsPrec :: Int -> ReadS ChModuleName readList :: ReadS [ChModuleName] readPrec :: ReadPrec ChModuleName readListPrec :: ReadPrec [ChModuleName]
Show ChModuleName Source #
Instance details Defined in CabalHelper.Shared.InterfaceTypes Methods showsPrec :: Int -> ChModuleName -> ShowS show :: ChModuleName -> String showList :: [ChModuleName] -> ShowS
Generic ChModuleName Source #
Instance details Defined in CabalHelper.Shared.InterfaceTypes Associated Types type Rep ChModuleName :: Type -> Type Methods from :: ChModuleName -> Rep ChModuleName x to :: Rep ChModuleName x -> ChModuleName
type Rep ChModuleName Source #
Instance details Defined in CabalHelper.Shared.InterfaceTypes type Rep ChModuleName = D1 (MetaData "ChModuleName" "CabalHelper.Shared.InterfaceTypes" "cabal-helper-0.8.2.0-G0MHCaq5g7W1McsrhclLQ1" True) (C1 (MetaCons "ChModuleName" PrefixI False) (S1 (MetaSel (Nothing :: Maybe Symbol) NoSourceUnpackedness NoSourceStrictness DecidedLazy) (Rec0 String)))

data ChComponentName Source #

Constructors

ChSetupHsName
ChLibName
ChSubLibName String
ChFLibName String
ChExeName String
ChTestName String
ChBenchName String

Instances

Eq ChComponentName Source #
Instance details Defined in CabalHelper.Shared.InterfaceTypes Methods (==) :: ChComponentName -> ChComponentName -> Bool (/=) :: ChComponentName -> ChComponentName -> Bool
Ord ChComponentName Source #
Instance details Defined in CabalHelper.Shared.InterfaceTypes Methods compare :: ChComponentName -> ChComponentName -> Ordering (<) :: ChComponentName -> ChComponentName -> Bool (<=) :: ChComponentName -> ChComponentName -> Bool (>) :: ChComponentName -> ChComponentName -> Bool (>=) :: ChComponentName -> ChComponentName -> Bool max :: ChComponentName -> ChComponentName -> ChComponentName min :: ChComponentName -> ChComponentName -> ChComponentName
Read ChComponentName Source #
Instance details Defined in CabalHelper.Shared.InterfaceTypes Methods readsPrec :: Int -> ReadS ChComponentName readList :: ReadS [ChComponentName] readPrec :: ReadPrec ChComponentName readListPrec :: ReadPrec [ChComponentName]
Show ChComponentName Source #
Instance details Defined in CabalHelper.Shared.InterfaceTypes Methods showsPrec :: Int -> ChComponentName -> ShowS show :: ChComponentName -> String showList :: [ChComponentName] -> ShowS
Generic ChComponentName Source #
Instance details Defined in CabalHelper.Shared.InterfaceTypes Associated Types type Rep ChComponentName :: Type -> Type Methods from :: ChComponentName -> Rep ChComponentName x to :: Rep ChComponentName x -> ChComponentName
type Rep ChComponentName Source #
Instance details Defined in CabalHelper.Shared.InterfaceTypes type Rep ChComponentName = D1 (MetaData "ChComponentName" "CabalHelper.Shared.InterfaceTypes" "cabal-helper-0.8.2.0-G0MHCaq5g7W1McsrhclLQ1" False) ((C1 (MetaCons "ChSetupHsName" PrefixI False) (U1 :: Type -> Type) :+: (C1 (MetaCons "ChLibName" PrefixI False) (U1 :: Type -> Type) :+: C1 (MetaCons "ChSubLibName" PrefixI False) (S1 (MetaSel (Nothing :: Maybe Symbol) NoSourceUnpackedness NoSourceStrictness DecidedLazy) (Rec0 String)))) :+: ((C1 (MetaCons "ChFLibName" PrefixI False) (S1 (MetaSel (Nothing :: Maybe Symbol) NoSourceUnpackedness NoSourceStrictness DecidedLazy) (Rec0 String)) :+: C1 (MetaCons "ChExeName" PrefixI False) (S1 (MetaSel (Nothing :: Maybe Symbol) NoSourceUnpackedness NoSourceStrictness DecidedLazy) (Rec0 String))) :+: (C1 (MetaCons "ChTestName" PrefixI False) (S1 (MetaSel (Nothing :: Maybe Symbol) NoSourceUnpackedness NoSourceStrictness DecidedLazy) (Rec0 String)) :+: C1 (MetaCons "ChBenchName" PrefixI False) (S1 (MetaSel (Nothing :: Maybe Symbol) NoSourceUnpackedness NoSourceStrictness DecidedLazy) (Rec0 String)))))

data ChPkgDb Source #

Constructors

ChPkgGlobal
ChPkgUser
ChPkgSpecific FilePath

Instances

Eq ChPkgDb Source #
Instance details Defined in CabalHelper.Shared.InterfaceTypes Methods (==) :: ChPkgDb -> ChPkgDb -> Bool (/=) :: ChPkgDb -> ChPkgDb -> Bool
Ord ChPkgDb Source #
Instance details Defined in CabalHelper.Shared.InterfaceTypes Methods compare :: ChPkgDb -> ChPkgDb -> Ordering (<) :: ChPkgDb -> ChPkgDb -> Bool (<=) :: ChPkgDb -> ChPkgDb -> Bool (>) :: ChPkgDb -> ChPkgDb -> Bool (>=) :: ChPkgDb -> ChPkgDb -> Bool max :: ChPkgDb -> ChPkgDb -> ChPkgDb min :: ChPkgDb -> ChPkgDb -> ChPkgDb
Read ChPkgDb Source #
Instance details Defined in CabalHelper.Shared.InterfaceTypes Methods readsPrec :: Int -> ReadS ChPkgDb readList :: ReadS [ChPkgDb] readPrec :: ReadPrec ChPkgDb readListPrec :: ReadPrec [ChPkgDb]
Show ChPkgDb Source #
Instance details Defined in CabalHelper.Shared.InterfaceTypes Methods showsPrec :: Int -> ChPkgDb -> ShowS show :: ChPkgDb -> String showList :: [ChPkgDb] -> ShowS
Generic ChPkgDb Source #
Instance details Defined in CabalHelper.Shared.InterfaceTypes Associated Types type Rep ChPkgDb :: Type -> Type Methods from :: ChPkgDb -> Rep ChPkgDb x to :: Rep ChPkgDb x -> ChPkgDb
type Rep ChPkgDb Source #
Instance details Defined in CabalHelper.Shared.InterfaceTypes type Rep ChPkgDb = D1 (MetaData "ChPkgDb" "CabalHelper.Shared.InterfaceTypes" "cabal-helper-0.8.2.0-G0MHCaq5g7W1McsrhclLQ1" False) (C1 (MetaCons "ChPkgGlobal" PrefixI False) (U1 :: Type -> Type) :+: (C1 (MetaCons "ChPkgUser" PrefixI False) (U1 :: Type -> Type) :+: C1 (MetaCons "ChPkgSpecific" PrefixI False) (S1 (MetaSel (Nothing :: Maybe Symbol) NoSourceUnpackedness NoSourceStrictness DecidedLazy) (Rec0 FilePath))))

data ChEntrypoint Source #

Constructors

ChSetupEntrypoint	Almost like `ChExeEntrypoint` but `main-is` could either be `"Setup.hs"` or `"Setup.lhs"`. Since we don't know where the source directory is you have to find these files.
ChLibEntrypoint
Fields chExposedModules :: [ChModuleName] chOtherModules :: [ChModuleName] chSignatures :: [ChModuleName]
ChExeEntrypoint
Fields chMainIs :: FilePath chOtherModules :: [ChModuleName]

Instances

Eq ChEntrypoint Source #
Instance details Defined in CabalHelper.Shared.InterfaceTypes Methods (==) :: ChEntrypoint -> ChEntrypoint -> Bool (/=) :: ChEntrypoint -> ChEntrypoint -> Bool
Ord ChEntrypoint Source #
Instance details Defined in CabalHelper.Shared.InterfaceTypes Methods compare :: ChEntrypoint -> ChEntrypoint -> Ordering (<) :: ChEntrypoint -> ChEntrypoint -> Bool (<=) :: ChEntrypoint -> ChEntrypoint -> Bool (>) :: ChEntrypoint -> ChEntrypoint -> Bool (>=) :: ChEntrypoint -> ChEntrypoint -> Bool max :: ChEntrypoint -> ChEntrypoint -> ChEntrypoint min :: ChEntrypoint -> ChEntrypoint -> ChEntrypoint
Read ChEntrypoint Source #
Instance details Defined in CabalHelper.Shared.InterfaceTypes Methods readsPrec :: Int -> ReadS ChEntrypoint readList :: ReadS [ChEntrypoint] readPrec :: ReadPrec ChEntrypoint readListPrec :: ReadPrec [ChEntrypoint]
Show ChEntrypoint Source #
Instance details Defined in CabalHelper.Shared.InterfaceTypes Methods showsPrec :: Int -> ChEntrypoint -> ShowS show :: ChEntrypoint -> String showList :: [ChEntrypoint] -> ShowS
Generic ChEntrypoint Source #
Instance details Defined in CabalHelper.Shared.InterfaceTypes Associated Types type Rep ChEntrypoint :: Type -> Type Methods from :: ChEntrypoint -> Rep ChEntrypoint x to :: Rep ChEntrypoint x -> ChEntrypoint
type Rep ChEntrypoint Source #
Instance details Defined in CabalHelper.Shared.InterfaceTypes type Rep ChEntrypoint = D1 (MetaData "ChEntrypoint" "CabalHelper.Shared.InterfaceTypes" "cabal-helper-0.8.2.0-G0MHCaq5g7W1McsrhclLQ1" False) (C1 (MetaCons "ChSetupEntrypoint" PrefixI False) (U1 :: Type -> Type) :+: (C1 (MetaCons "ChLibEntrypoint" PrefixI True) (S1 (MetaSel (Just "chExposedModules") NoSourceUnpackedness NoSourceStrictness DecidedLazy) (Rec0 [ChModuleName]) :: (S1 (MetaSel (Just "chOtherModules") NoSourceUnpackedness NoSourceStrictness DecidedLazy) (Rec0 [ChModuleName]) :: S1 (MetaSel (Just "chSignatures") NoSourceUnpackedness NoSourceStrictness DecidedLazy) (Rec0 [ChModuleName]))) :+: C1 (MetaCons "ChExeEntrypoint" PrefixI True) (S1 (MetaSel (Just "chMainIs") NoSourceUnpackedness NoSourceStrictness DecidedLazy) (Rec0 FilePath) :*: S1 (MetaSel (Just "chOtherModules") NoSourceUnpackedness NoSourceStrictness DecidedLazy) (Rec0 [ChModuleName]))))

data NeedsBuildOutput Source #

Constructors

ProduceBuildOutput
NoBuildOutput

Instances

Eq NeedsBuildOutput Source #
Instance details Defined in CabalHelper.Shared.InterfaceTypes Methods (==) :: NeedsBuildOutput -> NeedsBuildOutput -> Bool (/=) :: NeedsBuildOutput -> NeedsBuildOutput -> Bool
Ord NeedsBuildOutput Source #
Instance details Defined in CabalHelper.Shared.InterfaceTypes Methods compare :: NeedsBuildOutput -> NeedsBuildOutput -> Ordering (<) :: NeedsBuildOutput -> NeedsBuildOutput -> Bool (<=) :: NeedsBuildOutput -> NeedsBuildOutput -> Bool (>) :: NeedsBuildOutput -> NeedsBuildOutput -> Bool (>=) :: NeedsBuildOutput -> NeedsBuildOutput -> Bool max :: NeedsBuildOutput -> NeedsBuildOutput -> NeedsBuildOutput min :: NeedsBuildOutput -> NeedsBuildOutput -> NeedsBuildOutput
Read NeedsBuildOutput Source #
Instance details Defined in CabalHelper.Shared.InterfaceTypes Methods readsPrec :: Int -> ReadS NeedsBuildOutput readList :: ReadS [NeedsBuildOutput] readPrec :: ReadPrec NeedsBuildOutput readListPrec :: ReadPrec [NeedsBuildOutput]
Show NeedsBuildOutput Source #
Instance details Defined in CabalHelper.Shared.InterfaceTypes Methods showsPrec :: Int -> NeedsBuildOutput -> ShowS show :: NeedsBuildOutput -> String showList :: [NeedsBuildOutput] -> ShowS
Generic NeedsBuildOutput Source #
Instance details Defined in CabalHelper.Shared.InterfaceTypes Associated Types type Rep NeedsBuildOutput :: Type -> Type Methods from :: NeedsBuildOutput -> Rep NeedsBuildOutput x to :: Rep NeedsBuildOutput x -> NeedsBuildOutput
type Rep NeedsBuildOutput Source #
Instance details Defined in CabalHelper.Shared.InterfaceTypes type Rep NeedsBuildOutput = D1 (MetaData "NeedsBuildOutput" "CabalHelper.Shared.InterfaceTypes" "cabal-helper-0.8.2.0-G0MHCaq5g7W1McsrhclLQ1" False) (C1 (MetaCons "ProduceBuildOutput" PrefixI False) (U1 :: Type -> Type) :+: C1 (MetaCons "NoBuildOutput" PrefixI False) (U1 :: Type -> Type))

General information

buildPlatform :: (FilePath -> [String] -> String -> IO String) -> IO String Source #

Stuff that cabal-install really should export

getSandboxPkgDb Source #

Arguments

:: (FilePath -> [String] -> String -> IO String)
-> String	Cabal build platform, i.e. `buildPlatform`
-> Version	GHC version (`cProjectVersion` is your friend)
-> IO (Maybe FilePath)

Get the path to the sandbox package-db in a project

Managing `dist/`

prepare :: MonadIO m => QueryEnv -> m () Source #

Make sure the appropriate helper executable for the given project is installed and ready to run queries.

reconfigure Source #

Arguments

:: MonadIO m
=> (FilePath -> [String] -> String -> IO String)
-> Programs	Program paths
-> [String]	Command line arguments to be passed to `cabal`
-> m ()

Run cabal configure

writeAutogenFiles :: MonadIO m => QueryEnv -> m () Source #

Create cabal_macros.h and Paths_<pkg> possibly other generated files in the usual place.

$libexec related error handling

data LibexecNotFoundError Source #

This exception is thrown by all runQuery functions if the internal wrapper executable cannot be found. You may catch this and present the user an appropriate error message however the default is to print libexecNotFoundError.

Constructors

LibexecNotFoundError String FilePath

Instances

Show LibexecNotFoundError Source #
Instance details Defined in Distribution.Helper Methods showsPrec :: Int -> LibexecNotFoundError -> ShowS show :: LibexecNotFoundError -> String showList :: [LibexecNotFoundError] -> ShowS
Exception LibexecNotFoundError Source #
Instance details Defined in Distribution.Helper Methods toException :: LibexecNotFoundError -> SomeException fromException :: SomeException -> Maybe LibexecNotFoundError displayException :: LibexecNotFoundError -> String

libexecNotFoundError Source #

Arguments

:: String	Name of the executable we were trying to find
-> FilePath	Path to `$libexecdir`
-> String	URL the user will be directed towards to report a bug.
-> String

Running Queries

Queries against Cabal's on disk state

Package queries

cabal-install queries

Component queries

Query environment

Result types

General information

Stuff that cabal-install really should export

Managing dist/

$libexec related error handling

Reexports

Managing `dist/`