I once wrote a python module that applied diff patches as a part of the deployment process. This let us 'fix' libraries we depended on without having to maintai

I once wrote a python module that applied diff patches as a part of the deployment process. This let us 'fix' libraries we depended on without having to maintain a full fork until the maintainer fixed the bug. If a new version came down, we could test the patch and update it if needed. Necessity, meet invention...