Wow, this is great! It seems like this patch series is implementing a number of things I'd been wishing I could just import from some other Guix module. I'm signing off for the night, but I'll apply this tomorrow and give you some feedback. Ludovic Courtès writes: > There are no tests for ‘remote-eval’ currently. It would need a VM > with access to the store, as Jakob explained on guix-devel. One idea I had in developing my test suite was to design another record type to supplement '' for tests that /do/ need access the host's store as they're running, but thought it would be too intrusive as it would only be used by the tests for '(gnu machine)'. Now that we have a ‘remote-eval’ that would benefit from being tested that way, though, I'd like to ask: is that something I should look into? Thanks again for implementing this Jakob