On Sunday 20 September 2015 16:25:34 lee wrote: > Alan McKinnon <alan.mckin...@gmail.com> writes: > > On 19/09/2015 21:36, lee wrote: > >> Hi, > >> > >> how could I solve these updating problems: > >> > >> > >> 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) > > > > I'm not sure why you are getting this one. Portage is only pulling in > > boost-1.56.0-r1 because it's the latest stable version, but librevenge > > requires something earlier. Portage should therefore shut up and install > > the only real solution - keep boost at 1.55.0 > > Maybe because it says that there's a slot conflict. I had another one > of those, and getting rid of it prevents me from having a pdf reader > installed. I haven't had the need to read a pdf since, but sooner or > later I'll need to be able to.
Can you provide your world file? should be located at: /var/lib/portage/world > > Try these possibilities: > > > > emerge =dev-libs/boost-1.55.0-r2 > > Why this particular version; how did you figure that out? I read from > the second message that boost doesn't work with itself because > librevenge is installed. So I could remove librevenge, but a lot of > things depend on it, amongst them libreoffice. Don't forget to add "-1" or "--oneshot" as options when installing dependencies manually. > From there, I don't know what the effects are. Now libreoffice is still > 4.4.1.2, and I would expect it being upgraded to 5.x maybe. So I would > have to remove boost instead --- IIRC I installed it only to try out > regex_match() and regex_search() --- but removing boost seems a bit > unreasonable, considering that it takes a while to build. And even with > boost removed, I have no good reason to think that there won't be other > problems, and it leaves the question what to do when I need boost again: > I don't even have a pdf reader ... > > So I decided I'd better ask what to do. It's hard to believe that we > are seriously expected to remove lots of software which we might not be > able to install again just to do an update. All these conflicts give me > the impression that something in the repo is broken and needs to be > fixed. I have no such issues, neither do most people. Which seems to indicate the issue is not with the repo. Lets look at the actual contents of your world-file. (see above) > > emerge -avuND world > > > > or > > > > emerge -j 8 -a --update --newuse --deep --with-bdeps=n @world > > > > or quickpkg boost, then unmerge it and re-run emerge world. > > Boost is a pain to build so with a quickpkg you can put it back with a > > minimum of effort > > Maybe next weekend or so, I don't feel like doing it now and don't > really have the time to. quickpkg is really quick. Then, to reinstall from that: emerge -vak1 dev-libs/boost > >> 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) ^ ^^^^^ > > > > This is a consequence of boost. > > Fix the boost issue and this one goes away > > I thought it might. It's yet another message telling me that boost > doesn't work with boost. You seem to want 2 different versions of boost, which are in the same slot. Which isn't allowed. > >> 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)>> > >> ^^^^^^^^^^^^ > > > > Similar to boost. try a similar approach > > I tried 'emerge -j 8 -a --update --newuse --deep --with-bdeps=y ffmpeg' > to upgrade ffmpeg only because it seemed to be smallest problem. But > no, that requires quite a lot of packages and gives me a lengthy list > which looks like some kind of dependency hell. So that was a no-go, > too. > > Sure, I could also remove ffmpeg, but how do I know that I can reinstall > it after upgrading? media-libs/mlt... Lets have a look at your world-file. > >> !!! 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 ) > > > > Come on, the problem is as clear as daylight and stated right there in > > the output: > > > > If you have threads in USE for hdf5, then you cannot have cxx and/or > > fortran also in USE for hdf5 > > > > echo "=sci-libs/hdf5-1.8.14-r1 -cxx -fortran" >> > > /etc/portage/package.use/package.use > > I gathered that much, but I didn't feel like trying to find out whether > it's better to disable threads or cxx and fortran because of the other > problems. hdf5 was pulled in because of dependencies and not because I > installed it, so I didn't check its USE flags to begin with. Keep threads if you want performance. Then again, what do you want to do with hdf? > >> I could remove boost (and maybe reinstall it later), but I would like to > >> keep ffmpeg. hdf5 apparently goes back to having blender installed, > >> which I would also like to keep. And apparently, I would have to remove > >> libreoffice before I could update. > > > > What does libreoffice have to do with this? > > It depends on librevenge. world-file? > >> Why can't we just update like we can with any other distribution but > >> have to run into dependency problems all the time instead? > > > > You fail to understand how gentoo works. At no time did Gentoo ever > > guarantee that updates would work like binary distros and the process > > would be trouble free. Quite the opposite - Gentoo is upfront in telling > > you that there will always be update issues and you are the person to > > solve them. > > It never told me that. True, it's not clearly stated. > > This is because of how Gentoo works. With a binary distro, there is only > > one variant of a package. If package A depends on ldap, and cifs, and > > kerberos and nfs, and you don't want any of those then that is tough > > shit because you are going to get them. And you are going to get them > > because the package maintainer said you are going to get them. > > That's one of the things that bothers me with binary distributions. The more freedom with the package manager, the more conflicts you might encounter. > > Gentoo gives you the choice, and sometimes your choices interfere with > > other choices you make. Now you get to decide. > > > > Binary distros run into the same problems as above, and the package > > maintainer has to solve them. When that is done, the package gets pushed > > out and you don't see what it took. You also don't have any choice. > > > > In Gentoo, YOU have the role that a maintainer has on Fedora, YOU get to > > find out how to solve the problem and YOU get to implement it. That is > > the inevitable side-effect of having choice. > > Where and how do the above messages give me choices? They are telling > me that boost doesn't work with itself, It does, just not versions that are too close and would end up overwriting each others files. > that I cannot upgrade ffmpeg and > that I need to dis- or enable USE flags I've never touched. There are default USE-flags. In your config, in the profile and in the ebuilds. Conflicts can always occur. > I can make > a wild guess that removing boost and ffmpeg /might/ solve the problem, > and from my experience with the pdf reader, I can only assume that > chances that I cannot reinstall either after upgrading are pretty good. > My conclusion is that something in the repos might be broken because if > it wasn't, I wouldn't have these problems. I'm thinking world-file.. > So my choices are to try to somehow force an upgrade and be left with a > non-working system, or to wait until the problems are fixed, or to ask > for help. force an upgrade? > Asking for help turns out that I don't really have a choice because I > can either try to somehow force an upgrade and take the risk of being > left with a non-working system (because Gentoo gives me choices: perhaps > you can see the irony here), or not upgrade at all. How would you force an upgrade? > >> 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? > >> 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 seem unwilling to do what it takes to run Gentoo properly. I suggest > > you delete your Gentoo systems and install Fedora instead. Gentoo is > > obviously not for you. > > That is a really wild assumption you're making, to put it nicely. > > Besides, IMO Fedora is run by stupid fascists who believe they can > dictate people what to think and take over the world --- which is > something I don't want to have anything to do with --- and I don't want > systemd, either, which appears to come along remarkably similar lines. > You'd have to suggest a better alternative, one that is better than > Gentoo. It depends, for someone who wants it all to work magically? Or for someone who doesn't mind learning? > Other than that, can't you imagine that there might be room for > improvement? Like a way to undo an 'emerge --sync' and messages that > are more informative, or providing the user with actual choices that > would solve the problem and let them decide which solution they want > (think of aptitude, which Debian has)? There is, several in fact. One is called "Backups" The other one is portage snapshots. > Or would you rather say that Gentoo seems unwilling to do what it takes > to make it easier to upgrade? Yeah, I know, developer resources are > limited, but so are mine. Mine are even more limited, but I manage to upgrade multiple machines regularly (on average once every 2 months the whole lot) -- Joost
