these 2 derivations will be built:
  /nix/store/dln1py8dg4dkzjmflcnfbxlfd7ml2ygx-backlog-md-1.55.0.drv
  /nix/store/2iyfpjpdzi24r5q7g8nhq28nlqapa3nv-check-backlog-md.drv