fltk/fltk-1.3.9-1-x86_64.pkg.tar.zst build reproducible in our test framework:
2613fbd45cc7f522a2a06ae5d2cf9ac79afaf4e7f425b11fcdf82c620c65dafc fltk-1.3.9-1-x86_64.pkg.tar.zst
ab993ae721445a200935a275de305c700aa3be95b8558aca37f708823f0f2100 fltk-1.3.9-1-x86_64.pkg.tar.zst-b1.BUILDINFO.txt
ab993ae721445a200935a275de305c700aa3be95b8558aca37f708823f0f2100 fltk-1.3.9-1-x86_64.pkg.tar.zst-b2.BUILDINFO.txt