Hi Vagrant, Antoine, In addition to the various variance factors already addressed in this bug, and based on recent tests.reproducible-builds.org test results[1] for src:mono -- I think we may want to anticipate possible umask variance in the build environment too; it seems to affect the permissions bits in the resulting mono-source.tar.xz archive file.
I've updated the Reproducible Builds documentation recently to add a relevant section[2] about file permissions; in short, there's a tar '--mode' option that I think may be helpful here. Regards, James [1] - https://tests.reproducible-builds.org/debian/rb-pkg/unstable/amd64/diffoscope-results/mono.html [2] - https://reproducible-builds.org/docs/archives/#file-permissions
