I looked at the test failures, and I wonder if everything’s working as
intended.  What I did for debugging was:

--8<---------------cut here---------------start------------->8---
$ guix gc -R  /gnu/store/i71plcn5y8b29nc59s5d7m2cx810ki6n-cgit-test.drv |grep run-vm
/gnu/store/v9s4ai0dvgvmga6lyj4z2733lavr3acl-run-vm.sh-builder
/gnu/store/6a2l7mcshdzc38zj8nkinjlzqmgjnx3b-run-vm.sh.drv
$ guix build /gnu/store/6a2l7mcshdzc38zj8nkinjlzqmgjnx3b-run-vm.sh.drv
/gnu/store/igjg0i4d3sj77jpgppn09r66jql6nliw-run-vm.sh
$ /gnu/store/igjg0i4d3sj77jpgppn09r66jql6nliw-run-vm.sh -serial stdio
…
--8<---------------cut here---------------end--------------->8---

Then I experimented with w3m inside the VM.

Apparently some URLs are being rewritten, with
/cgit.cgi/cgit.cgi/cgit.cgi/… and so on, which looks weird.

Could you investigate more in a VM (you can simply use ‘guix system vm’
with a config similar to that of the test) to see what’s going on?
Looks like we’re almost there, but I’d feel more confident if we could
get a test running.  :-)

Thank you!

Ludo’.