unimplemented notes:
- regarding git histories, at least one of guix itself !!
- /build/ is ratelimited, so the narinfos or derivation paths of the first joblists would ee quite useful. enumerating /build/details seems only helpful if the derivation cannot be found anywhere

- on python, diskcache-rs advertises transparent compression

Oh and the response metadata is diagnostically and forensically incredible but unnecessary and using a lot of space and time

my cachedb is over 4.6GB of metadata and still growing. I randomly sorted the builds and ran a few processes in parallel so the list should still be quite useful. "quick naive script" solution to this needs a lot of time*space

note "quick naive" might apply to almost all source i have seen since 2014, notably pytorch :s

but guix15.py should be written in guile to reuse existing work and have separate threads for build and nar* data