these 2 derivations will be built:
  /nix/store/yg6cd1kirs4vjh97mfzm3xirg3mp99kd-gastown-1.2.1.drv
  /nix/store/lnndbyzaq6zfhr4iyf84p2irh89qwd74-check-gastown.drv
building '/nix/store/yg6cd1kirs4vjh97mfzm3xirg3mp99kd-gastown-1.2.1.drv'
gastown-1.2.1> Using versionCheckHook
gastown-1.2.1> Running phase: unpackPhase
gastown-1.2.1> unpacking source archive /nix/store/y7x9b4ilnn4ph9hy886bnp0kmisd0fqk-source
gastown-1.2.1> source root is source
gastown-1.2.1> Running phase: patchPhase
gastown-1.2.1> Running phase: updateAutotoolsGnuConfigScriptsPhase
gastown-1.2.1> Running phase: configurePhase