[rossy]

The AGPL is a pain though. MuJS was going to be used to add JS scripting to mpv, but the patch has been put on hold since the devs realised it was AGPL licensed and it could cause license compatibility issues with compiled binaries or libmpv users. I don't think MuJS will be used by anyone outside of GhostScript until they change their license to a more reasonable one.

[have_humility]

It's already used with MuPDF, and things that embed it. I was eyeballing it last week in the source tree for the EBookDroid fork "Document Viewer".