We are working on making libmypaint an independent library. Please test this prerelease and feed back via the tracker
This package is in a prerelease state, and the ABI is not yet quite set in stone. The API should be considered pretty stable, however.
Development binary packages and build scripts are available for various systems. See https://github.com/mypaint/libmypaint/wiki/Packaging, and please update the wiki page if you have made one yourself.