On Saturday 19 Sep 2015 21:05:27 Neil Bothwick wrote: > On Sat, 19 Sep 2015 21:36:06 +0200, lee wrote: > > emerge -j 8 -a --update --newuse --deep --with-bdeps=y > > @world > > > > * IMPORTANT: 4 news items need reading for repository 'gentoo'. > > * Use eselect news read to view new items. > > > > These are the packages that would be merged, in order: > > > > Calculating dependencies... done! > > > > !!! Multiple package instances within a single package slot have been > > pulled !!! into the dependency graph, resulting in a slot conflict: > > > > dev-libs/boost:0 > > > > (dev-libs/boost-1.56.0-r1:0/1.56.0::gentoo, ebuild scheduled for > > > > merge) pulled in by (no parents that aren't satisfied by other packages > > in this slot) > > > > (dev-libs/boost-1.55.0-r2:0/1.55.0::gentoo, ebuild scheduled for > > > > merge) pulled in by dev-libs/boost:0/1.55.0= required by > > (dev-libs/librevenge-0.0.2:0/0::gentoo, installed) > > ^^^^^^^^^^ (and 2 more with the same problem) > > > > dev-util/boost-build:0 > > > > (dev-util/boost-build-1.55.0:0/0::gentoo, installed) pulled in by > > > > =dev-util/boost-build-1.55* required by > > > > (dev-libs/boost-1.55.0-r2:0/1.55.0::gentoo, ebuild scheduled for merge) > > ^ > > ^^^^^ > > > > (dev-util/boost-build-1.56.0:0/0::gentoo, ebuild scheduled for merge) > > > > pulled in by =dev-util/boost-build-1.56* required by > > (dev-libs/boost-1.56.0-r1:0/1.56.0::gentoo, ebuild scheduled for merge) > > ^ > > ^^^^^ > > > > media-video/ffmpeg:0 > > > > (media-video/ffmpeg-2.6.3:0/54.56.56::gentoo, ebuild scheduled for > > > > merge) pulled in by (no parents that aren't satisfied by other packages > > in this slot) > > > > (media-video/ffmpeg-2.2.14:0/52.55.55::gentoo, installed) pulled in by > > > > media-video/ffmpeg:0/52.55.55=[vdpau] required by > > > > (media-libs/mlt-0.9.0:0/0::gentoo, installed) > > ^^^^^^^^^^^ > > These are unimportant, it is simply portage telling you it is not > updating some packages to the latest available and why. Personally, I > believe this sort of output should only be shown when using --verbose. > > > 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. > > > > For more information, see MASKED PACKAGES section in the emerge man > > page or refer to the Gentoo Handbook. > > > > > > !!! The ebuild selected to satisfy "sci-libs/hdf5" has unmet > > requirements. > > - sci-libs/hdf5-1.8.14-r1::gentoo USE="cxx fortran threads zlib -debug > > -examples -fortran2003 -mpi -static-libs -szip" > > > > The following REQUIRED_USE flag constraints are unsatisfied: > > threads? ( !cxx !fortran ) > > This is blocking you and the reason is given, if you have the threads > flag on, cxx and fortran must be off. You have both threads and cxx on > which won't work. > > > Why can't we just update like we can with any other distribution but > > have to run into dependency problems all the time instead? > > These aren't dependency problems, they are conflicting USE flags, a > situation that cannot arise with a binary distro. If you want the > flexibility that USE flags offer, you have to accept that not all > combinations will work together. > > > What do I do when I need to update /right now/ and find myself being > > blocked with cryptic messages like the above that leave me stranded? > > That's the real problem, that the messages are so cryptic. The solution > is simple, working out what needs to be done from the messages is not. > > > Once I used 'emerge --sync', there is no way to turn it back to continue > > to be able to install software if needed when the update cannot be > > performed. Updates simply need to work, there's no way around that. > > You can always roll back by masking the updates if necessary, and the > old ebuilds are always available. Now that the tree is using git, it is > probably possibly to sync back to yesterday if you need to.
As Alan said quickpkg boost, remove boost-1.55.0-r2, install boost-1.56.0-r1, emerge -1aDv dev-libs/librevenge and which-ever other package complains and you should be OK. Apply a similar approach with ffmpeg. Neil's comments on sci-libs/hdf5 stand. -- Regards, Mick
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