(chroot) jurchen / # emerge -uDN world --with-bdeps=y

 * IMPORTANT: 4 news items need reading for repository 'gentoo'.
 * Use eselect news to read news items.

Calculating dependencies  ... done!

!!! The ebuild selected to satisfy "media-libs/sdl-mixer" has unmet requirements.
- media-libs/sdl-mixer-1.2.12-r3::gentoo USE="(consolekit) flac mad (policykit) vorbis wav -fluidsynth -midi -mikmod -mod -modplug -mp3 -playtools -smpeg -static-libs -timidity"

  The following REQUIRED_USE flag constraints are unsatisfied:
    mad? ( mp3 )

  The above constraints are a subset of the following complete expression:
    midi? ( any-of ( timidity fluidsynth ) ) timidity? ( midi ) fluidsynth? ( midi ) mp3? ( any-of ( smpeg mad ) ) smpeg? ( mp3 ) mad? ( mp3 ) mod? ( any-of ( mikmod modplug ) ) mikmod? ( mod ) modplug? ( mod )

(dependency required by "games-simulation/simutrans-0.112.2" [ebuild])
(dependency required by "@selected" [set])
(dependency required by "@world" [argument])
(chroot) jurchen / #