this derivation will be built:
  /nix/store/50crg6riiynrm329r4adah8imahvvzlx-python3.9-nengo-3.2.0.drv
these 10 paths will be fetched (39.9 MiB download, 130.9 MiB unpacked):
  /nix/store/fwppb567d0ha2n9idk0smmhiv45x0y27-hook
  /nix/store/wsc14swzs1wyr5afnvhg9nb1rqjlvgvr-pip-install-hook
  /nix/store/ak4hpq4d0c364983iyxyl0w00717pa2a-python-catch-conflicts-hook
  /nix/store/9w8vw444nr1kxyl55kh7y87x8m3i0vjc-python-imports-check-hook.sh
  /nix/store/jzj8mk9kgqmlbn7ixdvxy7p67xcdkyiw-python3-3.9.16
  /nix/store/211322wg7771iv3agrp186ix5n7irfw8-python3.9-numpy-1.23.3
  /nix/store/9l3hb8qshh360n8x8r4ghwv42fhwl719-python3.9-pip-22.2.2
  /nix/store/zxrad64ni5qb09ds3xrb1r9wqwm03iw1-python3.9-setuptools-65.3.0
  /nix/store/w9glaaysyv3z2zm7kvkh8sd45gwqna28-python3.9-wheel-0.37.1
  /nix/store/9927mcigq9hkzxh8lisz3li8ly89b6mi-setuptools-setup-hook