these 2 derivations will be built:
  /nix/store/m3lhv6r4vjajw0ij3nnlqzdh3zri77bk-md-format.tests.nix.drv
  /nix/store/hhb71w0a9rl91i9a3jzq3kwpycrxlkyi-evalCheck-md-format.drv