Nginx service fails

[Andreas Enge <andreas@enge.fr>]

Hello,

writing to guix-devel first, since I am not sure whether I should file
a bug report. When reconfiguring my virtual machine today after I had
added a virtual host to nginx, it failed with the following error message:

...
creating nginx log directory '/var/log/nginx'
creating nginx run directory '/var/run/nginx'
creating nginx temp directories '/var/run/nginx/{client_body,proxy,fastcgi,uwsgi,scgi}_temp'
nginx: [alert] could not open error log file: open() "/gnu/store/pp71iff1qxwhh82vm34g18h9kmn0xrg5-nginx-1.13.9/logs/error.log" failed (2: No such file or directory)
nginx: the configuration file /gnu/store/5ixkryw6jl32cm6d1g9jb8dm9rbz8csc-nginx.conf syntax is ok
nginx: configuration file /gnu/store/5ixkryw6jl32cm6d1g9jb8dm9rbz8csc-nginx.conf test is successful
`/gnu/store/zchh8s3r1bbmia3zfxsyhsz3c4b9fmps-openssh-authorized-keys/root' -> `/etc/ssh/authorized_keys.d/root'
`/gnu/store/zchh8s3r1bbmia3zfxsyhsz3c4b9fmps-openssh-authorized-keys/andreas' -> `/etc/ssh/authorized_keys.d/andreas'
guix system: loading new services: user-homes term-auto nginx...
shepherd: Evaluating user expression (register-services (primitive-load "/gnu/st?") ?).
guix system: error: exception caught while executing 'eval' on service 'root':
find-long-options: unbound variable

And then the nginx service had disappeared. Even "guix system roll-back"
did not bring it back.

Since then I am trying to recompile a more recent git checkout, so I can
probably not reproduce the problem. But does it ring a bell?

Andreas