this derivation will be built:
  /nix/store/m4pn1ddcrn3ffnp73d56jl6pnpz2p6a2-interpolate-conformance.drv
building '/nix/store/m4pn1ddcrn3ffnp73d56jl6pnpz2p6a2-interpolate-conformance.drv' on 'ssh-ng://customer@mac02.m.ntd.one'
building '/nix/store/m4pn1ddcrn3ffnp73d56jl6pnpz2p6a2-interpolate-conformance.drv'
interpolate-conformance> 10 cases: Nix interpolate == Python interpolate == expected

post-build step Upload to niks3: ok
time=2026-09-16T09:32:08.805Z level=INFO msg="Uploading 0 paths to niks3.numtide.com (1 already cached)"
time=2026-09-16T09:32:09.384Z level=INFO msg="Uploading 1 narinfos"
time=2026-09-16T09:32:09.884Z level=INFO msg="Upload complete. (2.949s)"