[gentoo-user] re: resolving blocked packages [media-video/ffmpeg-1.2:0]

[Alexander Kapshuk]

As I ran 'emerge --ask --update --deep --with-bdeps=y --newuse world', I
got the message below.

These are the packages that would be merged, in order:

Calculating dependencies... done!
[ebuild  N     ] dev-scheme/guile-1.8.8-r1  USE="deprecated nls regex
threads -debug -debug-freelist -debug-malloc -discouraged -emacs
-networking"
[ebuild  N     ] sys-devel/autogen-5.15
[ebuild     U ~] net-libs/gnutls-3.2.5 [2.12.23-r1] USE="-dane%"
LINGUAS="-cs% -de% -en% -fi% -fr% -it% -ms% -nl% -pl% -sv% -uk% -vi%
-zh_CN%"
[ebuild  N     ] media-libs/libpostproc-0.8.0.20121125  USE="-3dnow
(-altivec) -mmx -mmxext -pic -static-libs"
[ebuild     U ~] media-video/vlc-2.1.0 [2.0.9] USE="-chromaprint% -fdk%
-opencv% (-qt5) -rdp% {-test%} -vdpau%"
[blocks B      ] <media-video/ffmpeg-1.2:0 ("<media-video/ffmpeg-1.2:0"
is blocking media-video/vlc-2.1.0)
[blocks B      ] media-video/ffmpeg:0 ("media-video/ffmpeg:0" is
blocking media-libs/libpostproc-0.8.0.20121125)
[blocks B      ] media-libs/libpostproc ("media-libs/libpostproc" is
blocking media-video/ffmpeg-1.0.7)

!!! Multiple package instances within a single package slot have been pulled
!!! into the dependency graph, resulting in a slot conflict:

net-libs/gnutls:0

  (net-libs/gnutls-3.2.5::gentoo, ebuild scheduled for merge) pulled in by
    >=net-libs/gnutls-3.0.20:0 required by
(media-video/vlc-2.1.0::gentoo, ebuild scheduled for merge)

  (net-libs/gnutls-2.12.23-r1::gentoo, installed) pulled in by
    (no parents that aren't satisfied by other packages in this slot)


It may be possible to solve this problem by using package.mask to
prevent one of those packages from being selected. However, it is also
possible that conflicting dependencies exist such that they are
impossible to satisfy simultaneously.  If such a conflict exists in
the dependencies of two different packages, then those packages can
not be installed simultaneously. You may want to try a larger value of
the --backtrack option, such as --backtrack=30, in order to see if
that will solve this conflict automatically.

For more information, see MASKED PACKAGES section in the emerge man
page or refer to the Gentoo Handbook.


 * Error: The above package list contains packages which cannot be
 * installed at the same time on the same system.

  (media-video/vlc-2.1.0::gentoo, ebuild scheduled for merge) pulled in by
    media-video/vlc required by @selected

  (media-video/ffmpeg-1.0.7::gentoo, installed) pulled in by
   
>=media-video/ffmpeg-0.10.3:0[X?,encode?,gsm?,jpeg2k?,mp3?,sdl?,speex?,theora?,threads?,truetype?,vaapi?,vdpau?,x264?]
(>=media-video/ffmpeg-0.10.3:0[X,encode,mp3,sdl,truetype,x264]) required
by (virtual/ffmpeg-0.10.3::gentoo, installed)


For more information about Blocked Packages, please refer to the following
section of the Gentoo Linux x86 Handbook (architecture is irrelevant):

http://www.gentoo.org/doc/en/handbook/handbook-x86.xml?full=1#blocked


The following keyword changes are necessary to proceed:
 (see "package.accept_keywords" in the portage(5) man page for more details)
# required by media-video/vlc-2.1.0[gnutls]
# required by @selected
# required by @world (argument)
=net-libs/gnutls-3.2.5 ~x86

Use --autounmask-write to write changes to config files (honoring
CONFIG_PROTECT). Carefully examine the list of proposed changes,
paying special attention to mask or keyword changes that may expose
experimental or unstable packages.
----------------------------------------------
After reading the 'Blocked Packages' found here,
http://www.gentoo.org/doc/en/handbook/handbook-x86.xml?full=1#blocked,
would updating media-video/ffmpeg to version 1.2 [the current version of
ffmpeg is 1.0.7], fix the blockage?

Any input would be much appreciated.