Arch Linux

Sorry, I forgot to set Category to Pacman.

Clarification:
IMHO the bug here is that pacman does not install mesa as a dependency for xorg-res-utils when installing xorg-clients.

Here's a bug in -Rs in pacman3

Let the detective story begins... ;-)

1) installed Arch Linux from one of the latest tpowa's ISOs

2) pacman -Syu

3) pacman -S xorg-server xorg-clients xf86-input-keyboard xf86-input-mouse xf86-video-vmware

Targets: xproto-7.0.9-1 libice-1.0.1-1 libsm-1.0.1-1 libxau-1.0.1-1
libxdmcp-1.0.1-1 kbproto-1.0.2-1 inputproto-1.3.2-1
bigreqsproto-1.0.2-1 libx11-1.0.3-1 libxt-1.0.2-1 libxkbfile-1.0.3-1
libxkbui-1.0.2-1 xextproto-7.0.2-1 libxext-1.0.1-1 libxi-1.0.1-1
xf86miscproto-0.9.2-1 libxxf86misc-1.0.1-1 libfontenc-1.0.2-1
freetype2-2.2.1-3 fontsproto-2.0.2-1 libxfont-1.2.2-1
renderproto-0.9.1-1 libxrender-0.9.1-1 dmxproto-2.2.2-1 libdmx-1.0.2-1
libxmu-1.0.2-1 libxpm-3.5.5-1 printproto-1.0.3-1 libxp-1.0.0-1
libxaw-1.0.2-1 xf86vidmodeproto-2.2.2-1 libxxf86vm-1.0.1-1
xorg-fonts-encodings-1.0.1-1 xorg-fonts-alias-1.0.1-1
xorg-font-utils-1.0.1-1 expat-2.0.0-1 fontconfig-2.4.1-4
xorg-fonts-misc-1.0.0-3 xcursor-themes-1.0.1-1 xorg-xkb-utils-1.0.2-1
xkeyboard-config-0.6-1 fontcacheproto-0.1.2-1 libxfontcache-1.0.2-1
liblbxutil-1.0.1-1 randrproto-1.1.2-1 libxrandr-1.1.1-1
trapproto-3.4.3-1 libxtrap-1.0.0-1 mcpp-2.6-1 xorg-server-utils-1.0.2-2
xf86dgaproto-2.0.2-1 libxxf86dga-1.0.1-1 recordproto-1.13.2-1
libxtst-1.0.1-1 xineramaproto-1.1.2-1 libxinerama-1.0.0-1
videoproto-2.2.2-1 libxv-1.0.2-1 libxft-2.1.10-1 xorg-utils-1.0.1-1
xorg-server-1.1.1-3 fixesproto-4.0-2 libxfixes-4.0.1-1
libxcursor-1.1.7-1 libpng-1.2.12-1 xorg-apps-1.0.2-2 xorg-xauth-1.0.1-1
xorg-xsm-1.0.1-2 xorg-xinit-1.0.2-2 xorg-xfwp-1.0.1-2 libfs-1.0.0-1
xorg-xfs-1.0.2-1 xorg-xdm-1.1.0-1 xorg-twm-1.0.1-1
xorg-res-utils-1.0.0-1 xorg-clients-7.0-1 xf86-input-mouse-1.1.1-1
xf86-input-keyboard-1.1.0-1 xf86-video-vmware-10.13.0-1

Total Package Size: 23.1 MB

Proceed with upgrade? [Y/n] Y

!!! Note that there's no mesa listed here

4) pacman -Rs xorg-server xorg-clients xf86-input-keyboard xf86-input-mouse xf86-video-vmware

warning: cannot find package "mesa" or anything that provides it!
. . . (75 same lines in total!!!)

Targets: xf86-video-vmware xf86-input-keyboard xf86-input-mouse xorg-clients
xorg-res-utils xorg-twm xorg-xdm xorg-xfs libfs xorg-xfwp xorg-xinit
xorg-xsm xorg-xauth xorg-apps libpng libxcursor libxfixes fixesproto
xorg-server xorg-utils libxft libxv videoproto libxinerama
xineramaproto libxtst recordproto libxxf86dga xf86dgaproto
xorg-server-utils mcpp libxtrap trapproto libxrandr randrproto
liblbxutil libxfontcache fontcacheproto xkeyboard-config
xorg-xkb-utils xcursor-themes xorg-fonts-misc fontconfig expat
xorg-font-utils xorg-fonts-alias xorg-fonts-encodings libxxf86vm
xf86vidmodeproto libxaw libxp printproto libxpm libxmu libdmx
dmxproto libxrender renderproto libxfont fontsproto freetype2
libfontenc libxxf86misc xf86miscproto libxi libxext xextproto
libxkbui libxkbfile libxt libx11 bigreqsproto inputproto kbproto
libxdmcp libxau libsm libice xproto

Do you want to remove these packages? [Y/n] n


5) now let find who is requiring mesa,
to be sure write simple script info.sh:

#!/bin/bash
for i in `pacman -Q`; do
pacman -Qi $i
done

then do chmod +x info.sh and execute
./info.sh 2>/dev/nul | grep mesa -B 15 -A 1

Name : xorg-res-utils
Version : 1.0.0-1
Groups : None
Packager : Arch Linux (http://www.archlinux.org)
URL : http://xorg.freedesktop.org/
License : None
Architecture : i686
Size : 146504
Build Date : Sat Feb 18 10:39:05 2006 UTC
Install Date : Sat Nov 11 17:14:52 2006 UTC
Install Script : No
Reason: : installed as a dependency for another package
Provides : None
Depends On : libdmx libxaw libxft libxi libxinerama libxtst libxv
libxxf86dga libxxf86misc mesa
Required By : xorg-clients

So, the only package which require mesa is xorg-res-utils which is required by xorg-clients.
Why the hell pacman installed _all_ dependencies of xorg-res-utils _except_ mesa???
And why "warning: cannot find package "mesa" or anything that provides it!" appeared 75 times (!!!) before displaying list of packaged suggested for removal???

But... wait a minute... xorg-res-utils PKGBUILD contains depends=(libxaw) - only 1 dependency instead of 10!!!
WTF???

# cat /var/lib/pacman/current/xorg-res-utils-1.0.0-1/depends
%DEPENDS%
libxaw

OK, now
# /var/lib/pacman/local/xorg-res-utils-1.0.0-1/depends
%DEPENDS%
mesa
libxxf86dga
libxi
libxxf86misc
libxtst
libxinerama
libxv
libdmx
libxft
libxaw

%REQUIREDBY%
xorg-clients

%CONFLICTS%

%PROVIDES%


WTF is going???

1) All this depends except mesa are depends of xorg-utils, not xorg-res-utils!!!
2) WTF mesa is doing here???
3) Why the hell depends are changed at all???

I read http://bugs.archlinux.org/task/3999 but IMHO problems desctibed there were of slightly another kind.
Here we have strange changes in package database which leads to weird behaviour.

I have a suspicion this has to do with the forced resolution of virtual packages.... but that's just a guess. I will test this in pacman3

Sadly, this bug is not fixed at all. :(

Soo.... I just tried to reproduce both of these on a nearly fresh system. Not only did pacman3 remove all packages as it should, it did it in exactly the reverse order.

Can you please provide some steps to reproduce this, as I can't seem to do it.

As I posted in ML already, this is fixed: http://bugs.archlinux.org/?getfile=884
But everything as described in the longest comment (http://bugs.archlinux.org/task/5775#comment12437) is clearly reproduceable with rc8 (except pacman doesn't show "warning: cannot find package "mesa" or anything that provides it!" 75 times). I have nothing to add to this comment. See the second part of it - xorg-res-utils record in database becomes wrong - 10 depends instead of 1.

Could not reproduce this in a brand new QEMU install. The depends of both the local and current xorg-res-utils were the same- only libxaw. This was with xorg-res-utils-1.0.3-1 being installed.

I found the reason!
The problem is that xorg-res-utils-1.0.0-1.pkg.tar.gz contained wrong .PKGINFO all time until 1.0.3-1 update!

# Generated by makepkg 2.9.8
# Sat Feb 18 10:39:05 UTC 2006
pkgname = xorg-res-utils
pkgver = 1.0.0-1
pkgdesc = X.Org X11 resource utilities
url = http://xorg.freedesktop.org/
builddate = Sat Feb 18 10:39:05 2006
packager = Arch Linux (http://www.archlinux.org)
size = 146504
arch = i686
depend = mesa
depend = libxxf86dga
depend = libxi
depend = libxxf86misc
depend = libxtst
depend = libxinerama
depend = libxv
depend = libdmx
depend = libxft
depend = libxaw

While PKGBUILD always contained depends=(libxaw) and thus gensync generated the following xorg-res-utils-1.0.0-1/depends in our Current repo:
%DEPENDS%
libxaw

When pacman (any version) installed xorg-res-utils-1.0.0-1 it generated the following /var/lib/pacman/local/xorg-res-utils-1.0.0-1/depends:
%DEPENDS%
mesa
libxxf86dga
libxi
libxxf86misc
libxtst
libxinerama
libxv
libdmx
libxft
libxaw

%REQUIREDBY%
xorg-clients

So, pacman and gensync did everything correctly. It was a weird bug in old makepkg that lead to generating wrong .PKGINFO in xorg-res-utils-1.0.0-1 package.

Or PKGBUILD's depends array was modified on dev's machine after building a package, but new package wasn't rebuilt.