> While doing removals, one encounters the usual dependency resolution > problem that yum addresses in installs, but in the other direction where > it is conceivably even more difficult. It is easy to add packages to > satisfy dependencies -- it is REALLY HARD to disentangle packages for > safe removal. > > Here yum is a bit more easily confused and doesn't seem to always want > to do the right thing. 1. what version of yum 2. what version of rhl - 7.3? under 7.3 libuser requires openldap usermode requires libuser util-linux requires usermode nfs-utils requires util-linux (specifically /sbin/nologin) so you get a removal dependency cascade. So what happens is this - yum gets to a point where it doesn't know what else it can remove nor what to remove. sometimes this is b/c there are insufficient dep/req information in any package to figure out where it should be. sometimes it's b/c at some point you remove enough things and your system doesn't exist. a yum depends pkgname is on the todo list (http://linux.duke.edu/yum/yum-todo.ptml) but it is not as easy as it seems at first glance. Especially if you want to see dep lists for not-installed programs. > Or am I being very silly and does yum already do all of this? yum doesn't do all of this - and some of those ideas are VERY VERY complex in terms of producing them. it is something I want to work on wrt to the new depresolution stuff but it's not going to happen tomorrow. -sv
