this derivation will be built:
  /nix/store/l2bpx6rf775z4i4xfpfxws9c2xivib8x-swamp-20260826.170637.0-sha.9df806f3.drv
building '/nix/store/l2bpx6rf775z4i4xfpfxws9c2xivib8x-swamp-20260826.170637.0-sha.9df806f3.drv'
swamp-20260826.170637.0-sha.9df806f3> Using versionCheckHook
swamp-20260826.170637.0-sha.9df806f3> Running phase: unpackPhase
swamp-20260826.170637.0-sha.9df806f3> unpacking source archive /nix/store/ncxk06wvn1kng1xq2m75699dfwr09rwp-swamp-20260826.170637.0-sha.9df806f3-binary-linux-x86_64.tar.gz
swamp-20260826.170637.0-sha.9df806f3> source root is .
swamp-20260826.170637.0-sha.9df806f3> setting SOURCE_DATE_EPOCH to timestamp 1787765138 of file "./swamp"
swamp-20260826.170637.0-sha.9df806f3> Running phase: patchPhase
swamp-20260826.170637.0-sha.9df806f3> Running phase: updateAutotoolsGnuConfigScriptsPhase
swamp-20260826.170637.0-sha.9df806f3> Running phase: configurePhase
swamp-20260826.170637.0-sha.9df806f3> no configure script, doing nothing
swamp-20260826.170637.0-sha.9df806f3> Running phase: buildPhase
swamp-20260826.170637.0-sha.9df806f3> no Makefile or custom buildPhase, doing nothing
swamp-20260826.170637.0-sha.9df806f3> Running phase: installPhase
swamp-20260826.170637.0-sha.9df806f3> Running phase: fixupPhase
swamp-20260826.170637.0-sha.9df806f3> shrinking RPATHs of ELF executables and libraries in /nix/store/zvi4pl9v5llslpb62nlc14fi52s4z2dg-swamp-20260826.170637.0-sha.9df806f3
swamp-20260826.170637.0-sha.9df806f3> shrinking /nix/store/zvi4pl9v5llslpb62nlc14fi52s4z2dg-swamp-20260826.170637.0-sha.9df806f3/bin/swamp
swamp-20260826.170637.0-sha.9df806f3> checking for references to /build/ in /nix/store/zvi4pl9v5llslpb62nlc14fi52s4z2dg-swamp-20260826.170637.0-sha.9df806f3...
swamp-20260826.170637.0-sha.9df806f3> patching script interpreter paths in /nix/store/zvi4pl9v5llslpb62nlc14fi52s4z2dg-swamp-20260826.170637.0-sha.9df806f3
swamp-20260826.170637.0-sha.9df806f3> wrapBuddy: wrapping paths: /nix/store/zvi4pl9v5llslpb62nlc14fi52s4z2dg-swamp-20260826.170637.0-sha.9df806f3
swamp-20260826.170637.0-sha.9df806f3> Using interpreter: /nix/store/0d8g8n0a11v6f5m2h416ajyxmnkwc3md-glibc-2.42-67/lib/ld-linux-x86-64.so.2
swamp-20260826.170637.0-sha.9df806f3> 64-bit stub: 407 bytes
swamp-20260826.170637.0-sha.9df806f3> 32-bit stub: 441 bytes
swamp-20260826.170637.0-sha.9df806f3> Patching: /nix/store/zvi4pl9v5llslpb62nlc14fi52s4z2dg-swamp-20260826.170637.0-sha.9df806f3/bin/swamp
swamp-20260826.170637.0-sha.9df806f3>   ELF class: 64-bit
swamp-20260826.170637.0-sha.9df806f3>   Original entry: 0x2271000 (file offset: 0x2270000)
swamp-20260826.170637.0-sha.9df806f3>   Available space at entry: 50417312 bytes
swamp-20260826.170637.0-sha.9df806f3>   Stub size: 407 bytes (padded to 416)
swamp-20260826.170637.0-sha.9df806f3>   Wrote config to /nix/store/zvi4pl9v5llslpb62nlc14fi52s4z2dg-swamp-20260826.170637.0-sha.9df806f3/bin/.swamp.wrapbuddy
swamp-20260826.170637.0-sha.9df806f3>   Overwrote 416 bytes at entry point
swamp-20260826.170637.0-sha.9df806f3>   Converted PT_INTERP to PT_NULL
swamp-20260826.170637.0-sha.9df806f3> Patched: /nix/store/zvi4pl9v5llslpb62nlc14fi52s4z2dg-swamp-20260826.170637.0-sha.9df806f3/bin/swamp
swamp-20260826.170637.0-sha.9df806f3> Running phase: installCheckPhase
swamp-20260826.170637.0-sha.9df806f3> Executing versionCheckPhase
swamp-20260826.170637.0-sha.9df806f3> Successfully managed to find version 20260826.170637.0-sha.9df806f3 in the output of the command /nix/store/zvi4pl9v5llslpb62nlc14fi52s4z2dg-swamp-20260826.170637.0-sha.9df806f3/bin/swamp --version
swamp-20260826.170637.0-sha.9df806f3> swamp 20260826.170637.0-sha.9df806f3
swamp-20260826.170637.0-sha.9df806f3> Finished versionCheckPhase
swamp-20260826.170637.0-sha.9df806f3> no Makefile or custom installCheckPhase, doing nothing

post-build step Upload to niks3: ok
time=2026-08-26T22:17:27.348Z level=INFO msg="Uploading 1 paths to niks3.numtide.com (7 already cached)"
time=2026-08-26T22:17:27.348Z level=INFO msg="Uploading zvi4pl9v5llslpb62nlc14fi52s4z2dg-swamp-20260826.170637.0-sha.9df806f3 (350.0MB)"
time=2026-08-26T22:17:38.914Z level=INFO msg="Uploading 1 narinfos"
time=2026-08-26T22:17:39.253Z level=INFO msg="Upload complete. (12.07s)"