these 3 derivations will be built:
  /nix/store/pz7d3v82rrjrgw8zrhpmrjdsr6ijkxcv-source.drv
  /nix/store/qiwacfyffq39v84xzh3pgl429kpqs5bw-deja-vu-0.23.4.drv
  /nix/store/yxawqfxd31a0cmiwfd828iwwk82jliba-check-deja-vu.drv