evaluateNamedProperty

lib.licenses.evaluateNamedProperty

Docs pulled from | This Revision | 17 minutes ago

Nixpkgs manual

Evaluate a license expression for a given property name. The property must be defined as a boolean attribute of all licenses passed.

Inputs

name: Name of the Attribute which should be checked
permissive: Whether to apply checks permissive or reciprocal
license: License expression which should be evaluated

Type

evaluateNamedProperty :: String -> Bool -> AttrSet -> Bool

Example

`lib.licenses.evaluateNamedProperty` usage example

evaluateNamedProperty "deprecated" true (with lib.licenses; AND [ ncsa (WITH asl20 llvm-exception) ])
=> false

Noogle detected

Implementation

The following is the current implementation of this function.

evaluateNamedProperty =
    name: permissive:
    let
      OR = if permissive then any else all;
      AND = if permissive then all else any;
      evaluateComplexProperty = handleComplexProperty (evaluateNamedProperty name permissive) AND OR;
    in
    license:
    if license.licenseType == "simple" then license.${name} else evaluateComplexProperty license;