these 2 derivations will be built:
  /nix/store/w04m2bwx7kcnq49igx7q4qblwpbm8bl0-subsonic-6.1.6-standalone.tar.gz.drv
  /nix/store/g0290sq2k3baf71zcrqwi2638x0jv875-subsonic-6.1.6.drv