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definition:
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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
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demand:
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no demanded arguments
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deterministic:
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deterministic operation
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documentation:
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--- 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.
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failfree:
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<FAILING>
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indeterministic:
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referentially transparent operation
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infix:
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no fixity defined
|
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iotype:
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{(_) |-> _}
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name:
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getPackageVersionOfModule
|
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precedence:
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no precedence defined
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result-values:
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_
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signature:
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String -> Prelude.IO (Prelude.Maybe (String, String))
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solution-complete:
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operation might suspend on free variables
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terminating:
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possibly non-terminating
|
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totally-defined:
|
possibly non-reducible on same data term
|