sources:
  cbindgen-vendor.tar.xz: f661af3f8e6a52af8f0bc206987134e66b449fe0
  firefox-69.0.2.source.tar.xz: b4b60624a5d876286a0b31addd105dbb7722bf45
  firefox-dictionary-61.0.2.tar.bz2: 25929c585dc8568a32d5be49aacc672f0ed2202f