these 2 derivations will be built:
  /nix/store/ki56xw3zycdrr5jcr8sc4y8m1qx2yf2k-pi-1.4.0.drv
  /nix/store/d6mzxkxwhrkskp8lnc3qz4cy1xck95lp-check-pi.drv
this path will be fetched (0.0 KiB download, 22.7 MiB unpacked):
  /nix/store/11ggr610na9nqa0d7z8bm750vxrysfpg-pi-src-with-lock