If a project has a setup.cfg file, colcon ignores the setup.py file completely

[rotu]

When creating a setup.py file, setup.cfg can be used to specify some data in a declarative manner. But the logic in RosPackageIdentification.identify ignores the setup.py file if a setup.cfg file is specified.

This came up in an ugly way for my project which defines data_files in setup.py but defines some other package data in the setup.cfg file. When colcon attempts to install the project with --symlink-install option, it completely omits the package data, since it only looks at the cfg file.

[rotu]

Thank you, @dirk-thomas!