CurryInfo: currypath-3.0.0 / System.CurryPath.getPackageVersionOfModule

 
getPackageVersionOfModule :: String -> IO (Maybe (String,String))
getPackageVersionOfModule mname = do
  mbsrc <- lookupModuleSourceInLoadPath mname
  case mbsrc of
    Nothing -> error $ "Module '" ++ mname ++ "' not found in load path!"
    Just (dirname,_) -> getPackageVersionOfDirectory dirname

 no demanded arguments

 deterministic operation

 
Checks whether a module name is part of a package and
returns the package name and package version.
For instance, in a package containing a dependency to package
`process` with version `3.0.0`, the call

    getPackageVersionOfModule "System.Process"

returns

    Just "process" "3.0.0"

`Nothing` is returned if there is no package to which this module
belongs.

For this purpose, the source file of the module is looked up
(and an error is raised if this module cannot be found) and
it is checked whether there is a `package.json` file under the
directory of the source file and the directory name is a valid package id.

 <FAILING>

 referentially transparent operation

 no fixity defined

 {(_) |-> _}

 getPackageVersionOfModule

 no precedence defined

 _

 String -> Prelude.IO (Prelude.Maybe (String, String))

 operation might suspend on free variables

 possibly non-terminating

 possibly non-reducible on same data term