Sourcing pip-install-hook
Sourcing setuptools-build-hook
Using setuptoolsShellHook
@nix { "action": "setPhase", "phase": "unpackPhase" }
unpacking sources
unpacking source archive /nix/store/lfkj40ykgzy144wlpiwhr74la3sfb8c6-wheel-0.36.2-source
unpacking source archive /nix/store/r7451b05lgnq5v7har6vhvfi5zzxngi8-pip-21.1.3-source
unpacking source archive /nix/store/ba3bi95v0sx62ijjg237rmxxqg0f1iki-setuptools-57.2.0-sdist.tar.gz
source root is .
@nix { "action": "setPhase", "phase": "patchPhase" }
patching sources
@nix { "action": "setPhase", "phase": "configurePhase" }
configuring
no configure script, doing nothing
@nix { "action": "setPhase", "phase": "installPhase" }
installing
Building setuptools wheel...
/build/setuptools /build
Processing /build/setuptools
  DEPRECATION: A future pip version will change local packages to be built in-place without first copying to a temporary directory. We recommend you use --use-feature=in-tree-build to test your packages with this new behavior before it becomes the default.
   pip 21.3 will remove support for this functionality. You can find discussion regarding this at https://github.com/pypa/pip/issues/7555.
Using legacy 'setup.py install' for setuptools, since package 'wheel' is not installed.
Installing collected packages: setuptools
    Running setup.py install for setuptools ... [?25l- \ | / - \ done
[?25hSuccessfully installed setuptools
/build
Building wheel wheel...
/build/wheel /build
Processing /build/wheel
  DEPRECATION: A future pip version will change local packages to be built in-place without first copying to a temporary directory. We recommend you use --use-feature=in-tree-build to test your packages with this new behavior before it becomes the default.
   pip 21.3 will remove support for this functionality. You can find discussion regarding this at https://github.com/pypa/pip/issues/7555.
Using legacy 'setup.py install' for wheel, since package 'wheel' is not installed.
Installing collected packages: wheel
    Running setup.py install for wheel ... [?25l- \ done
[?25hSuccessfully installed wheel-0.36.2
/build
Building pip wheel...
/build/pip /build
Processing /build/pip
  DEPRECATION: A future pip version will change local packages to be built in-place without first copying to a temporary directory. We recommend you use --use-feature=in-tree-build to test your packages with this new behavior before it becomes the default.
   pip 21.3 will remove support for this functionality. You can find discussion regarding this at https://github.com/pypa/pip/issues/7555.
    Preparing wheel metadata ... [?25l- \ done
[?25hBuilding wheels for collected packages: pip
  Building wheel for pip (PEP 517) ... [?25l- \ | / - \ | done
[?25h  Created wheel for pip: filename=pip-21.1.3-py3-none-any.whl size=1548045 sha256=e3a7ecde4ff23d6afb3f51d0d0d0990371c77150978419214781fc4325122e29
  Stored in directory: /build/pip-ephem-wheel-cache-rrerfs0e/wheels/2c/75/a6/87785b08981486027ba9c9748230b0d3068571fe289343d0a8
Successfully built pip
Installing collected packages: pip
  WARNING: The scripts pip, pip3 and pip3.9 are installed in '/nix/store/wkknkwqcff03nami8iy8kiik20w1zxar-python3.9-bootstrapped-pip-21.1.3/bin' which is not on PATH.
  Consider adding this directory to PATH or, if you prefer to suppress this warning, use --no-warn-script-location.
Successfully installed pip-21.1.3
/build
@nix { "action": "setPhase", "phase": "fixupPhase" }
post-installation fixup
shrinking RPATHs of ELF executables and libraries in /nix/store/wkknkwqcff03nami8iy8kiik20w1zxar-python3.9-bootstrapped-pip-21.1.3
strip is /nix/store/v8imx1nvyz0hgvx9cbcmh6gp4ngw3ffj-binutils-2.35.1/bin/strip
stripping (with command strip and flags -S) in /nix/store/wkknkwqcff03nami8iy8kiik20w1zxar-python3.9-bootstrapped-pip-21.1.3/lib  /nix/store/wkknkwqcff03nami8iy8kiik20w1zxar-python3.9-bootstrapped-pip-21.1.3/bin 
patching script interpreter paths in /nix/store/wkknkwqcff03nami8iy8kiik20w1zxar-python3.9-bootstrapped-pip-21.1.3
checking for references to /build/ in /nix/store/wkknkwqcff03nami8iy8kiik20w1zxar-python3.9-bootstrapped-pip-21.1.3...