this derivation will be built:
  /nix/store/jbkifp20w7favz17dsjbjqh1i7kz5l0b-mpv-convert-script-2016-03-18.drv
these 10 paths will be fetched (4.4 MiB download, 28.1 MiB unpacked):
  /nix/store/72yxqg6kjs4jmnpvm3vlvk2b9phfcmzy-25ea7ae77b30af959be0-f95cee4
  /nix/store/ma5miqdf3pb3cdi167lrjk9ply8zhilf-fmt-7.1.3
  /nix/store/a4vc518vmhx4dgg8j1d1186facpiv2is-fmt-7.1.3-dev
  /nix/store/l2zsn62lchx6bclrdjz9672vfhbzagp2-libdvdcss-1.4.3
  /nix/store/viq9bsmx49nbn7nmz8hjvypxxha5m8jj-libdvdread-6.1.3
  /nix/store/l852jdqi6wnqpsidi7mk7sx8gsk6g303-libebml-1.4.4
  /nix/store/8l0h9asr3xf9yd9ydpa1gi840qpczxzi-libmatroska-1.7.1
  /nix/store/16nzpgg1jqvaicfk3jml9phf9y775d62-mkvtoolnix-73.0.0
  /nix/store/hbyw7nj3la7hk87abc6414xi95v0m9d7-nlohmann_json-3.11.2
  /nix/store/rwxr2fz6assscn0jl4cn5gshc2waf1s0-yad-12.1