Hi everyone, The font maps generated during profile creation (procedure texlive-font-maps in guix/profiles.scm) are not reproducible: the order in which the files are listed in the ls-R file is not deterministic.
As a consequence, files generated from profiles, such as Docker or Singularity containers, are not reproducible. I suspect that the culprit is the mktexlsr utility which generates the non-deterministic ls-R files. It's worth exploring if it can be patched. Cheers, Konrad.