Hi, ‘git-download’ needs to depend on guile-gnutls to implement its fallback mechanism (downloading from mirrors or from SWH over HTTPS). Commit c625e5b64d0a6cb7ffbf2ef971d4c990b1f5c5c1 restored this. However, it also introduced a circular dependency: the origin of guile-gnutls relies on 'git-download', which would now depend on guile-gnutls. Thus, I reverted it right away.
We need to solve that. For now, the only fix I can think of is having ‘guile-gnutls’ built from a “make dist”-provided tarballs. Apparently we can add assets at <https://gitlab.com/gnutls/guile/-/tags>; would you like to upload a tarball and accompanying signature, Simon? Unfortunately, that means doing away with all the packaging work by Vivien, in particular proper bootstrapping with Gnulib. The longer-term solution is to add a “builtin:git-download” derivation builder, just like we have “builtin:download”. The implementation should be relatively easy, but we’ll have to be able to deal with daemons that lack this builtin possibly for several years. Thoughts? Ludo’.
