these 2 derivations will be built:
  /nix/store/skfp9ias8s8q5427bxpiqknj8amllydz-source.drv
  /nix/store/69f8hzyj7wh1ip27kjh8cr67pjnl986x-numworks-epsilon-15.5.0.drv
these 2 paths will be fetched (177.6 MiB download, 1.1 GiB unpacked):
  /nix/store/7026gggbzcvj6bvbdcm68z665ngd3d7k-gcc-arm-embedded-12.2.rel1
  /nix/store/9493ngfjwisjm5f5s5ld5m34rdy431ic-python3-3.8.16