this derivation will be built:
  /nix/store/bvmds10fn7bxcqf623lh05i4cs11gbsh-swamp-20260824.230503.0-sha.ad72897a.drv
building '/nix/store/bvmds10fn7bxcqf623lh05i4cs11gbsh-swamp-20260824.230503.0-sha.ad72897a.drv'
swamp-20260824.230503.0-sha.ad72897a> Using versionCheckHook
swamp-20260824.230503.0-sha.ad72897a> Running phase: unpackPhase
swamp-20260824.230503.0-sha.ad72897a> unpacking source archive /nix/store/lsf39q3r12wybcf7aivhwg0x9j7qs6cl-swamp-20260824.230503.0-sha.ad72897a-binary-linux-x86_64.tar.gz
swamp-20260824.230503.0-sha.ad72897a> source root is .
swamp-20260824.230503.0-sha.ad72897a> setting SOURCE_DATE_EPOCH to timestamp 1787613689 of file "./swamp"
swamp-20260824.230503.0-sha.ad72897a> Running phase: patchPhase
swamp-20260824.230503.0-sha.ad72897a> Running phase: updateAutotoolsGnuConfigScriptsPhase
swamp-20260824.230503.0-sha.ad72897a> Running phase: configurePhase
swamp-20260824.230503.0-sha.ad72897a> no configure script, doing nothing
swamp-20260824.230503.0-sha.ad72897a> Running phase: buildPhase
swamp-20260824.230503.0-sha.ad72897a> no Makefile or custom buildPhase, doing nothing
swamp-20260824.230503.0-sha.ad72897a> Running phase: installPhase
swamp-20260824.230503.0-sha.ad72897a> Running phase: fixupPhase
swamp-20260824.230503.0-sha.ad72897a> shrinking RPATHs of ELF executables and libraries in /nix/store/hwqwah6v9k2lkbh0vvks46261fvcbdkx-swamp-20260824.230503.0-sha.ad72897a
swamp-20260824.230503.0-sha.ad72897a> shrinking /nix/store/hwqwah6v9k2lkbh0vvks46261fvcbdkx-swamp-20260824.230503.0-sha.ad72897a/bin/swamp
swamp-20260824.230503.0-sha.ad72897a> checking for references to /build/ in /nix/store/hwqwah6v9k2lkbh0vvks46261fvcbdkx-swamp-20260824.230503.0-sha.ad72897a...
swamp-20260824.230503.0-sha.ad72897a> patching script interpreter paths in /nix/store/hwqwah6v9k2lkbh0vvks46261fvcbdkx-swamp-20260824.230503.0-sha.ad72897a
swamp-20260824.230503.0-sha.ad72897a> wrapBuddy: wrapping paths: /nix/store/hwqwah6v9k2lkbh0vvks46261fvcbdkx-swamp-20260824.230503.0-sha.ad72897a
swamp-20260824.230503.0-sha.ad72897a> Using interpreter: /nix/store/0d8g8n0a11v6f5m2h416ajyxmnkwc3md-glibc-2.42-67/lib/ld-linux-x86-64.so.2
swamp-20260824.230503.0-sha.ad72897a> 64-bit stub: 407 bytes
swamp-20260824.230503.0-sha.ad72897a> 32-bit stub: 441 bytes
swamp-20260824.230503.0-sha.ad72897a> Patching: /nix/store/hwqwah6v9k2lkbh0vvks46261fvcbdkx-swamp-20260824.230503.0-sha.ad72897a/bin/swamp
swamp-20260824.230503.0-sha.ad72897a>   ELF class: 64-bit
swamp-20260824.230503.0-sha.ad72897a>   Original entry: 0x2271000 (file offset: 0x2270000)
swamp-20260824.230503.0-sha.ad72897a>   Available space at entry: 50417312 bytes
swamp-20260824.230503.0-sha.ad72897a>   Stub size: 407 bytes (padded to 416)
swamp-20260824.230503.0-sha.ad72897a>   Wrote config to /nix/store/hwqwah6v9k2lkbh0vvks46261fvcbdkx-swamp-20260824.230503.0-sha.ad72897a/bin/.swamp.wrapbuddy
swamp-20260824.230503.0-sha.ad72897a>   Overwrote 416 bytes at entry point
swamp-20260824.230503.0-sha.ad72897a>   Converted PT_INTERP to PT_NULL
swamp-20260824.230503.0-sha.ad72897a> Patched: /nix/store/hwqwah6v9k2lkbh0vvks46261fvcbdkx-swamp-20260824.230503.0-sha.ad72897a/bin/swamp
swamp-20260824.230503.0-sha.ad72897a> Running phase: installCheckPhase
swamp-20260824.230503.0-sha.ad72897a> Executing versionCheckPhase
swamp-20260824.230503.0-sha.ad72897a> Successfully managed to find version 20260824.230503.0-sha.ad72897a in the output of the command /nix/store/hwqwah6v9k2lkbh0vvks46261fvcbdkx-swamp-20260824.230503.0-sha.ad72897a/bin/swamp --version
swamp-20260824.230503.0-sha.ad72897a> swamp 20260824.230503.0-sha.ad72897a
swamp-20260824.230503.0-sha.ad72897a> Finished versionCheckPhase
swamp-20260824.230503.0-sha.ad72897a> no Makefile or custom installCheckPhase, doing nothing

post-build step Upload to niks3: ok
time=2026-08-25T19:10:18.707Z level=INFO msg="Uploading 1 paths to niks3.numtide.com (7 already cached)"
time=2026-08-25T19:10:18.707Z level=INFO msg="Uploading hwqwah6v9k2lkbh0vvks46261fvcbdkx-swamp-20260824.230503.0-sha.ad72897a (349.7MB)"
time=2026-08-25T19:10:32.807Z level=INFO msg="Uploading 1 narinfos"
time=2026-08-25T19:10:33.204Z level=INFO msg="Upload complete. (14.708s)"