For example, by default c_winlib is set to various Windows libraries there, but things like c_args could also be lists (they're just empty by default.)
The old code split by commas, which broke anything after a list that had any content. Instead, use a PurpleKeyValuePair array so that keys/values are in a structured format.
Also, change the value into an AdwActionRow:subtitle, as that wraps better.

Compiled and checked that the About dialog had changed as expected.