I noticed that many jobs from the 'ungrafting' jobset were failing due to errors like this:
------ substitute: substitute: [Kupdating substitutes from 'http://141.80.167.131:5557'... 0.0% substitute: [Kupdating substitutes from 'http://141.80.167.131:5557'... 100.0% substitute: substitute: [Kupdating substitutes from 'https://ci.guix.gnu.org'... 0.0% substitute: [Kupdating substitutes from 'https://ci.guix.gnu.org'... 100.0% cannot build missing derivation ?/gnu/store/mfyjaw81dhizfm4zkkx75h28vfjy0qq4-python-hacking-4.1.0.drv? ------ https://ci.guix.gnu.org/build/375186/details I logged in to berlin.gnu.org and confirmed that the derivation was missing. I think we need to make these "active" of registered derivations into GC roots.
