these 11 derivations will be built:
  /nix/store/09v4v67vds1z4a0vkhij9ail6rnbh2si-python3.9-contextlib2-21.6.0.drv
  /nix/store/157ad1c0s7jmsmhb577l5cv8dx7arhl1-python3.9-termcolor-2.0.1.drv
  /nix/store/5vb5d099szlxcixwwq5dcb3x59ycdfvy-python3.9-cmdline-0.2.0.drv
  /nix/store/6fcfzzbpcqgi7a7wkkhqbv0mpwh1142r-python3.9-setuptools-git-1.2.drv
  /nix/store/11p75p71axvymmwxzm1dsi4iy4xyx3kz-python3.9-pytest-shutil-1.7.0.drv
  /nix/store/bnnp5gffsa34prhx0nxr7a9y5rzz8frf-python3.9-pytest-fixture-config-1.7.0.drv
  /nix/store/4lmx92d5w0s59zbrka100150zhbyg23h-python3.9-pytest-virtualenv-1.7.0.drv
  /nix/store/c8n5byb1y2zs516jclhdzldbjymbm9bf-python3.9-distro-1.7.0.drv
  /nix/store/y39152cfji3gxs4706zdv27qg9wv3ind-boost-1.79.0.drv
  /nix/store/zrqpkqjc1brzclwr1yj9kmb69q0wn9z5-python3.9-scikit-build-0.15.0.drv
  /nix/store/qq5k2whmzaphbpk8xiq9md33gvgpx2x6-python3.9-pc-ble-driver-py-0.17.0.drv
these 20 paths will be fetched (7.2 MiB download, 13.3 MiB unpacked):
  /nix/store/9m67gr11ysb14176zs8qnpvasnln9mfb-boost-build-boost-1.79.0
  /nix/store/27zcrcn5di2yifnybak3ygnf4ihhq60m-cmdline-0.2.0.tar.gz
  /nix/store/292krnsp95mh320z0wdkw63jxm4i0p0n-contextlib2-21.6.0.tar.gz
  /nix/store/wqr1rm7vbqq9a4lqrl8d916k2zp5vdnp-distro-1.7.0.tar.gz
  /nix/store/8kd5ix1ziz4sdnmw2y81l955fw9zqcm0-pytest-fixture-config-1.7.0.tar.gz
  /nix/store/n4bgp50k98pbp2jw8djypr6knr4vxr75-pytest-shutil-1.7.0.tar.gz
  /nix/store/ql6rsrczyipv63kx3l99wvx96n4d5gv6-pytest-virtualenv-1.7.0.tar.gz
  /nix/store/x4swq2q45wmygf8yy0s81zfb4h95bv3h-python3.9-backports-entry-points-selectable-1.2.0
  /nix/store/1yrkgr7lz4blm4dzk5h57rmvk8avhgs4-python3.9-distlib-0.3.6
  /nix/store/m97vm5kla0mjz4c073m76qpl0n3767jy-python3.9-filelock-3.8.0
  /nix/store/14n6ny43m9wyvb6af2n69v01vl7c5wvd-python3.9-hatch-vcs-0.2.0
  /nix/store/dn2ylriz84phfr9z9yqj1413748738yf-python3.9-platformdirs-2.5.3
  /nix/store/cj8pqpi9acrm7dfnn72dglz0xyfjh1zr-python3.9-pytest-cov-3.0.0
  /nix/store/pha4x45xwgmr4v58g8106ijm85hvivna-python3.9-pytest-mock-3.8.2
  /nix/store/2qbiadkpb9z9nc03x1bs8y6nx1v5dfwv-python3.9-virtualenv-20.16.5
  /nix/store/mrc47q0gdbfs3vwfnpp0qfidpv04297x-python3.9-wrapt-1.14.1
  /nix/store/6rriqds4d8c7z18h2blhr04v295mcswh-scikit-build-0.15.0.tar.gz
  /nix/store/2092ngxmcpb1001v7bijmls88qbxps9w-setuptools-git-1.2.tar.gz
  /nix/store/i165x0h5g4yp2nikfci0a7fh14vl2kw2-termcolor-2.0.1.tar.gz
  /nix/store/pk9d23wz1w5r21pjlk6wrz3i9psmwqzi-unittest-check-hook