these 3 derivations will be built:
  /nix/store/5vrvsabdsgjxspzl731c5mylxcjwmvdb-source.drv
  /nix/store/mzxx816nan7z9wv4jcd8q0sp3wy5bii4-semble-0.7.2.drv
  /nix/store/p0dgbw120pplm2q5lq8rxmjx2ymgi2z5-check-semble.drv