this derivation will be built:
  /nix/store/prnpa427rjayqnx3gpfdyrbxmnm4hcgp-python3.10-python-nest-4.2.0.drv
this path will be fetched (8.3 KiB download, 26.9 KiB unpacked):
  /nix/store/jdmx1l4wpqg0s807x119s2s97nsq5p2i-python3.10-sseclient-py-1.7.2