Hoogle Search
Within LTS Haskell 24.6 (ghc-9.10.2)
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lookupUnitId :: PackageIndex a -> UnitId -> Maybe aCabal Distribution.Simple.PackageIndex Does a lookup by unit identifier. Since multiple package DBs mask each other by UnitId, then we get back at most one package.
lookupKnownProgram :: String -> ProgramDb -> Maybe ProgramCabal Distribution.Simple.Program No documentation available.
lookupProgram :: Program -> ProgramDb -> Maybe ConfiguredProgramCabal Distribution.Simple.Program Try to find a configured program
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Cabal Distribution.Simple.Program Check that a program is configured and available to be run. Additionally check that the program version number is suitable and return it. For example you could require AnyVersion or orLaterVersion (Version [1,0] []) It returns the configured program, its version number and a possibly updated ProgramDb. If the program could not be configured or the version is unsuitable, it returns an error value.
lookupKnownProgram :: String -> ProgramDb -> Maybe ProgramCabal Distribution.Simple.Program.Db No documentation available.
lookupProgram :: Program -> ProgramDb -> Maybe ConfiguredProgramCabal Distribution.Simple.Program.Db Try to find a configured program
lookupProgramByName :: String -> ProgramDb -> Maybe ConfiguredProgramCabal Distribution.Simple.Program.Db Try to find a configured program
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Cabal Distribution.Simple.Program.Db Check that a program is configured and available to be run. Additionally check that the program version number is suitable and return it. For example you could require AnyVersion or orLaterVersion (Version [1,0] []) It returns the configured program, its version number and a possibly updated ProgramDb. If the program could not be configured or the version is unsuitable, it returns an error value.
lookupGlobalName :: GhcMonad m => Name -> m (Maybe TyThing)ghc GHC Looks up a global name: that is, any top-level name in any visible module. Unlike lookupName, lookupGlobalName does not use the interactive context, and therefore does not require a preceding setContext.
lookupModule :: GhcMonad m => ModuleName -> Maybe FastString -> m Moduleghc GHC Like findModule, but differs slightly when the module refers to a source file, and the file has not been loaded via load. In this case, findModule will throw an error (module not loaded), but lookupModule will check to see whether the module can also be found in a package, and if so, that package Module will be returned. If not, the usual module-not-found error will be thrown.