Gentoo Archives: gentoo-user

From: Willie Wong <wwong@×××××××××.edu>
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] 'emerge -e world' question
Date: Tue, 13 Jan 2009 17:27:55
Message-Id: 20090113172748.GA7589@math.princeton.edu
In Reply to: Re: [gentoo-user] 'emerge -e world' question by Paul Hartman
1 On Tue, Jan 13, 2009 at 11:10:44AM -0600, Paul Hartman wrote:
2 > On Tue, Jan 13, 2009 at 10:57 AM, Willie Wong <wwong@×××××××××.edu> wrote:
3 > > Hum, I seem to have made an erroneous assumption.
4 > >
5 > > On Tue, Jan 13, 2009 at 11:38:05AM -0500, Willie Wong wrote:
6 > >> The problem with this last one is not --deep. It is --update.
7 > >
8 > > Nevermind, I looked at the changelogs for openoffice and
9 > > dev-perl/Archive-Zip, and frankly, I am pretty sure what I said was
10 > > completely wrong in this situation. And also, frankly, I am becoming
11 > > as confused as you are about your problem.
12 >
13 > I "downgraded" to File-Spec-3.29 (actually an upgrade) which in turn
14 > emerged/updated the rest of that bunch of perl-related packages. Now
15 > I'm re-emerging openoffice-3.0.0 since it appears to be using a newer
16 > set of the go-oo.org patches (despite the lack of version number
17 > change). Plus it is always fun to see how long it takes to build one
18 > of the biggest packages there is. I have emerged it twice in the past,
19 > the first was 1hr33m the second was 1hr55m, so I hope this one won't
20 > exceed 2h.
21
22 I don't find that explanation satisfactory. (The one about upgrade vs
23 downgrades.) -u expands to --update means to install the *best
24 available version*, not the *highest version number available*. If an
25 ebuild goes from x86 to being hardmasked, --update should downgrade.
26 If an ebuild of insanely high version number gets removed, --update
27 should downgrade.
28
29 I can explain why emerge openoffice and emerge --deep openoffice are
30 different. emerge --deep openoffice basically does something similar
31 to emerge --oneshot <everything openoffice has in its dependency>.
32 So every package in the dependency tree will be considered, and if not
33 at the *best* version it will be updated. Compare to emerge openoffice
34 where only if a change of ebuild in openoffice changes the dependency
35 will trigger installation of new or updated versions of dependencies.
36 (Basically, you already have a version of whatever perl class it
37 wants, and the ebuild specifies >= some really low version, so the
38 dependency is satisfied and won't be considered in the emerge.)
39
40 What I can't explain is why emerge --update --deep world misses the
41 update! dev-perl/Archive-Zip is (correct me if I am wrong: I didn't
42 see it mentioned in the changelogs so I assume it was not changed) in
43 the dependency tree of both the Nov 3 and the January versions of
44 openoffice. So --deep should traverse down there and find that one of
45 its dependencies requires an update. At least that's what I expect
46 based on "man emerge".
47
48 Best,
49
50 W
51 --
52 Willie W. Wong wwong@××××××××××××××.edu
53 408 Fine Hall, Department of Mathematics, Princeton University, Princeton
54 A mathematician's reputation rests on the number of bad proofs he has given.

Replies

Subject Author
Re: [gentoo-user] 'emerge -e world' question Paul Hartman <paul.hartman+gentoo@×××××.com>