these 2 derivations will be built:
  /nix/store/89wwvbr36ps50qf1icw2dc5rjq3121c5-semble-0.6.2.drv
  /nix/store/fq3q9h7qfcl3gslprjn2ygbdgn6j0b0k-check-semble.drv