Hi Ludo, On Sun, 29 Dec 2019 23:41:42 +0100 Ludovic Courtès wrote: > > It could be because my modules in GUIX_PACKAGE_PATH contain an import cycle > > (I don't know whether it does, but I had such a cycle before). > > And that’s definitely a possibility! Can you try unsetting > GUIX_PACKAGE_PATH? Sure, but that will not decide it conclusively. It's pretty rare that guix pull has the problem above (once a week or so), so it could also be that it will work because it got a non-problematic case the same time (but not because of) I unset GUIX_PACKAGE_PATH.