Earlier quoted context omitted.
https://github.com/massivemadness/Squircle-CE/issues/182 It contains a google library, but can't find what exact library they are referring to, as the link they've provided is dead. EDIT: Found it in an old commit from around that time the comment was made https://github.com/massivemadness/Squircle-CE/blob/1818d3904... A googleplay "appupdate" library, I don't have knowledge about App development, but I don't see how…
It seems to not be needed or used. My take from the thread is that F-Droid complains about the library reference present in the source code at all. It does not know the library is not linked in the F-Droid build.
> In our experience, where the upstream developer includes Non-Free libraries, sooner or later they will include more Non-Free libraries, or other Anti-Features. Frequently they become impossible to maintain/update in F-Droid.