this derivation will be built:
  /nix/store/c2z8hs8sdirhavbzirsfv18w8r9x47bj-swamp-20260830.034252.0-sha.43b19693.drv
building '/nix/store/c2z8hs8sdirhavbzirsfv18w8r9x47bj-swamp-20260830.034252.0-sha.43b19693.drv' on 'ssh-ng://customer@mac02.m.ntd.one'
building '/nix/store/c2z8hs8sdirhavbzirsfv18w8r9x47bj-swamp-20260830.034252.0-sha.43b19693.drv'
swamp-20260830.034252.0-sha.43b19693> Using versionCheckHook
swamp-20260830.034252.0-sha.43b19693> Running phase: unpackPhase
swamp-20260830.034252.0-sha.43b19693> unpacking source archive /nix/store/04vlinr7cgmcz8fk7j10jnb9z22c0w7y-swamp-20260830.034252.0-sha.43b19693-binary-darwin-aarch64.tar.gz
swamp-20260830.034252.0-sha.43b19693> source root is .
swamp-20260830.034252.0-sha.43b19693> setting SOURCE_DATE_EPOCH to timestamp 1788170849 of file "./env-vars"
swamp-20260830.034252.0-sha.43b19693> warning: file "./env-vars" may be generated; SOURCE_DATE_EPOCH may be non-deterministic
swamp-20260830.034252.0-sha.43b19693> Running phase: patchPhase
swamp-20260830.034252.0-sha.43b19693> Running phase: updateAutotoolsGnuConfigScriptsPhase
swamp-20260830.034252.0-sha.43b19693> Running phase: configurePhase
swamp-20260830.034252.0-sha.43b19693> no configure script, doing nothing
swamp-20260830.034252.0-sha.43b19693> Running phase: buildPhase
swamp-20260830.034252.0-sha.43b19693> no Makefile or custom buildPhase, doing nothing
swamp-20260830.034252.0-sha.43b19693> Running phase: installPhase
swamp-20260830.034252.0-sha.43b19693> Running phase: fixupPhase
swamp-20260830.034252.0-sha.43b19693> checking for references to /nix/var/nix/builds/nix-12452-2883400420/ in /nix/store/qilmxy2j4099n3li1snvmfclmf5x8sb2-swamp-20260830.034252.0-sha.43b19693...
swamp-20260830.034252.0-sha.43b19693> patching script interpreter paths in /nix/store/qilmxy2j4099n3li1snvmfclmf5x8sb2-swamp-20260830.034252.0-sha.43b19693
swamp-20260830.034252.0-sha.43b19693> Running phase: installCheckPhase
swamp-20260830.034252.0-sha.43b19693> Executing versionCheckPhase
swamp-20260830.034252.0-sha.43b19693> Successfully managed to find version 20260830.034252.0-sha.43b19693 in the output of the command /nix/store/qilmxy2j4099n3li1snvmfclmf5x8sb2-swamp-20260830.034252.0-sha.43b19693/bin/swamp --version
swamp-20260830.034252.0-sha.43b19693> swamp 20260830.034252.0-sha.43b19693
swamp-20260830.034252.0-sha.43b19693> Finished versionCheckPhase
swamp-20260830.034252.0-sha.43b19693> no Makefile or custom installCheckPhase, doing nothing

post-build step Upload to niks3: ok
time=2026-08-31T10:07:52.388Z level=INFO msg="Uploading 0 paths to niks3.numtide.com (1 already cached)"
time=2026-08-31T10:07:53.058Z level=INFO msg="Uploading 1 narinfos"
time=2026-08-31T10:07:53.460Z level=INFO msg="Upload complete. (4.038s)"