this derivation will be built:
  /nix/store/i3r3rzpgp5lcpa3zzahq22wppnp4ppw7-interpolate-conformance.drv
building '/nix/store/i3r3rzpgp5lcpa3zzahq22wppnp4ppw7-interpolate-conformance.drv' on 'ssh-ng://customer@mac02.m.ntd.one'
building '/nix/store/i3r3rzpgp5lcpa3zzahq22wppnp4ppw7-interpolate-conformance.drv'
interpolate-conformance> 9 cases: Nix interpolate == Python interpolate == expected

post-build step Upload to niks3: ok
time=2026-08-25T00:20:11.208Z level=INFO msg="Uploading 0 paths to niks3.numtide.com (1 already cached)"
time=2026-08-25T00:20:11.592Z level=INFO msg="Uploading 1 narinfos"
time=2026-08-25T00:20:12.137Z level=INFO msg="Upload complete. (988ms)"