System.Plugins.Env

apply f to the loaded objects Env, apply f to the package.conf FM locks up the MVar so you can't recursively call a function inside a with any -Env function. Nice and threadsafe

withDepEnv :: Env -> (DepEnv -> IO a) -> IO a

withPkgEnvs :: Env -> (PkgEnvs -> IO a) -> IO a

withMerged :: Env -> (MergeEnv -> IO a) -> IO a

modifyModEnv :: Env -> (ModEnv -> IO ModEnv) -> IO ()

modifyDepEnv :: Env -> (DepEnv -> IO DepEnv) -> IO ()

modifyPkgEnv :: Env -> (PkgEnvs -> IO PkgEnvs) -> IO ()

modifyMerged :: Env -> (MergeEnv -> IO MergeEnv) -> IO ()

addModule :: String -> Module -> IO ()

insert a loaded module name into the environment

rmModule :: String -> IO Bool

remove a module name from the environment. Returns True if the module was actually removed.

addModules :: [(String, Module)] -> IO ()

insert a list of module names all in one go

isLoaded :: String -> IO Bool

is a module/package already loaded?

loaded :: String -> IO Bool

addModuleDeps :: Module -> [Module] -> IO ()

Set the dependencies of a Module.

getModuleDeps :: Module -> IO [Module]

Get module dependencies. Nothing if none have been recored.

rmModuleDeps :: Module -> IO ()

Unrecord a module from the environment.

isMerged :: FilePath -> FilePath -> IO Bool

lookupMerged :: FilePath -> FilePath -> IO (Maybe FilePath)

addMerge :: FilePath -> FilePath -> FilePath -> IO ()

addPkgConf :: FilePath -> IO ()

Insert a single package.conf (containing multiple configs) means: create a new FM. insert packages into FM. add FM to end of list of FM stored in the environment.

union :: PkgEnvs -> [PackageConfig] -> PkgEnvs

add a new FM for the package.conf to the list of existing ones

grabDefaultPkgConf :: IO PkgEnvs

generate a PkgEnv from the system package.conf The path to the default package.conf was determined by configure This imposes a constraint that you must build your plugins with the same ghc you use to build hs-plugins. This is reasonable, we feel.

readPackageConf :: FilePath -> IO [PackageConfig]

lookupPkg :: PackageName -> IO ([FilePath], [FilePath])

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