On 2015-12-09 22:56, Duncan wrote: > Austin S Hemmelgarn posted on Wed, 09 Dec 2015 14:04:06 -0500 as > excerpted: > >> Agreed. It's not too bad fixing a Gentoo system (as long as >> /var/lib/portage/world is still correct, you can just nuke the installed >> package database and emerge world, it'll take time, but it will get your >> system in a guaranteed consistent state). > > For sufficiently loose values of "consistent", yes, as I found out by > experience. But it can be done, and I do have the experience to prove it. > > What happens in practice is that while yes, as long as @world is correct > you can install to current and have all those files tracked again as > appropriate, if your package installation database is missing or out of > sync with what's actually on your filesystem(s), where the new version of > various packages will replace older files as they come across them during > the install process (subject to CONFIG_PROTECT of course, this part isn't > the problem), the problem is actually where the files of the actually > installed but untracked version differ from those of the version you're > installing. Oh, definately, it's a useable system short term, but not something you should be depending on. The other big difference though is that it's then trivial to bootstrap a clean install on the same system if you have the space for it (which is what I usually end up doing).
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