On Fri, 30 Oct 2020 at 17:20, Ludovic Courtès <l...@gnu.org> wrote: > Currently, ‘guix install’ errors out if you try to install two > same-named packages with a different version number or a different store > file name (typically via propagated inputs). > > Here, ‘emacs’ and ‘emacs-xwidgets’ have different names, so it doesn’t > complain. > > Perhaps we should offer a way to annotate packages as conflicting with > one another?
Why? The solution seems to check the path names. Here, the 2 packages provide 'bin/emacs'; which is the conflict. However, this could be implemented with care otherwise it will slow down. I have not check 'union-build' but maybe it is already the case. :-) All the best, simon
