this derivation will be built:
  /nix/store/c7b0wdns5v4dxpzjmihj1zy4bawkw3h7-interpolate-conformance.drv
building '/nix/store/c7b0wdns5v4dxpzjmihj1zy4bawkw3h7-interpolate-conformance.drv' on 'ssh-ng://customer@mac02.m.ntd.one'
building '/nix/store/c7b0wdns5v4dxpzjmihj1zy4bawkw3h7-interpolate-conformance.drv'
interpolate-conformance> 9 cases: Nix interpolate == Python interpolate == expected

post-build step Upload to niks3: ok
time=2026-08-29T18:28:24.996Z level=INFO msg="Uploading 0 paths to niks3.numtide.com (1 already cached)"
time=2026-08-29T18:28:25.381Z level=INFO msg="Uploading 1 narinfos"
time=2026-08-29T18:28:25.817Z level=INFO msg="Upload complete. (900ms)"