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atemv
n00b
Joined: 09 Aug 2014
Posts: 63
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 Posted: Fri Aug 22, 2014 10:21 am Post subject: emerge --depclean wants to remove dependencies |
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Hi everybody!
I installed Gentoo 3 weeks ago, and now I want use first time. For a safety measure I used --ask flag to check the list of unnecessary packages, before jinx something important.
| Code: | dev-libs/libxdg-basedir
selected: 1.1.1
protected: none
omitted: none
media-sound/wavpack
selected: 4.70.0
protected: none
omitted: none
virtual/jre
selected: 1.6.0-r1
protected: none
omitted: 1.7.0
media-video/vcdimager
selected: 0.7.24
protected: none
omitted: none
net-libs/libkolabxml
selected: 0.8.4
protected: none
omitted: none
x11-libs/libXvMC
selected: 1.0.8
protected: none
omitted: none
sci-libs/cblas-reference
selected: 20030223-r4
protected: none
omitted: none
app-admin/eselect-xvmc
selected: 0.4
protected: none
omitted: none
dev-cpp/xsd
selected: 3.3.0-r3
protected: none
omitted: none
virtual/jdk
selected: 1.6.0-r2
protected: none
omitted: 1.7.0
dev-libs/libcdio
selected: 0.92
protected: none
omitted: none
dev-cpp/libxsd-frontend
selected: 1.18.0-r3
protected: none
omitted: none
dev-cpp/libbackend-elements
selected: 1.7.2
protected: none
omitted: none
dev-java/icedtea-bin
selected: 6.1.13.3-r3
protected: none
omitted: none
dev-cpp/libfrontend-elements
selected: 1.1.4
protected: none
omitted: none
dev-libs/xerces-c
selected: 3.1.1-r1
protected: none
omitted: none
dev-cpp/libcult
selected: 1.4.6-r1
protected: none
omitted: none
dev-util/build
selected: 0.3.9
protected: none
omitted: none |
The result was a bit fishy for me. So I used equery depends <packagename> to check the list. As a result many of these packages are important dependecies for others:
| Code: | localhost attila # equery depends media-sound/wavpack
* These packages depend on media-sound/wavpack:
media-sound/sox-14.4.1 (wavpack ? media-sound/wavpack)
localhost attila # equery depends media-video/vcdimager
* These packages depend on media-video/vcdimager:
media-video/vlc-2.1.2 (vcdx ? >=media-video/vcdimager-0.7.22:0)
localhost attila # equery depends libXvMC
* These packages depend on libXvMC:
app-emulation/emul-linux-x86-xlibs-20140508 (abi_x86_32 ? >=x11-libs/libXvMC-1.0.8[abi_x86_32(-)])
media-libs/mesa-10.0.4 (xvmc ? >=x11-libs/libXvMC-1.0.8[abi_x86_32(-)?,abi_x86_64(-)?,abi_x86_x32(-)?,abi_mips_n32(-)?,abi_mips_n64(-)?,abi_mips_o32(-)?,abi_ppc_32(-)?,abi_ppc_64(-)?,abi_s390_32(-)?,abi_s390_64(-)?])
localhost attila # equery depends sci-libs/cblas-reference
* These packages depend on sci-libs/cblas-reference:
virtual/cblas-1.0 (sci-libs/cblas-reference)
localhost attila # equery depends app-admin/eselect-xvmc
* These packages depend on app-admin/eselect-xvmc:
x11-libs/libXvMC-1.0.8 (app-admin/eselect-xvmc)
localhost attila # equery depends dev-cpp/xsd
* These packages depend on dev-cpp/xsd:
net-libs/libkolabxml-0.8.4 (dev-cpp/xsd)
localhost attila # equery depends dev-libs/libcdio
* These packages depend on dev-libs/libcdio:
media-video/libav-9.14 (cdio ? <dev-libs/libcdio-0.90[-minimal,abi_x86_32(-)?,abi_x86_64(-)?,abi_x86_x32(-)?,abi_mips_n32(-)?,abi_mips_n64(-)?,abi_mips_o32(-)?,abi_ppc_32(-)?,abi_ppc_64(-)?,abi_s390_32(-)?,abi_s390_64(-)?])
media-video/vcdimager-0.7.24 (>=dev-libs/libcdio-0.90-r1[-minimal,abi_x86_32(-)?,abi_x86_64(-)?,abi_x86_x32(-)?,abi_mips_n32(-)?,abi_mips_n64(-)?,abi_mips_o32(-)?,abi_ppc_32(-)?,abi_ppc_64(-)?,abi_s390_32(-)?,abi_s390_64(-)?])
media-video/vlc-2.1.2 (vcdx ? >=dev-libs/libcdio-0.78.2:0)
localhost attila # equery depends dev-cpp/libxsd-frontend
* These packages depend on dev-cpp/libxsd-frontend:
dev-cpp/xsd-3.3.0-r3 (>=dev-cpp/libxsd-frontend-1.18.0-r1)
localhost attila # equery depends dev-cpp/libbackend-elements
* These packages depend on dev-cpp/libbackend-elements:
dev-cpp/xsd-3.3.0-r3 (>=dev-cpp/libbackend-elements-1.7.2)
localhost attila # equery depends dev-cpp/libfrontend-elements
* These packages depend on dev-cpp/libfrontend-elements:
dev-cpp/libxsd-frontend-1.18.0-r3 (>=dev-cpp/libfrontend-elements-1.1.4)
localhost attila # equery depends dev-libs/xerces-c
* These packages depend on dev-libs/xerces-c:
dev-cpp/libxsd-frontend-1.18.0-r3 (>=dev-libs/xerces-c-3)
dev-cpp/xsd-3.3.0-r3 (>=dev-libs/xerces-c-3)
net-libs/libkolabxml-0.8.4 (dev-libs/xerces-c)
localhost attila # equery depends dev-cpp/libcult
* These packages depend on dev-cpp/libcult:
dev-cpp/libbackend-elements-1.7.2 (>=dev-cpp/libcult-1.4.6-r1)
dev-cpp/libfrontend-elements-1.1.4 (>=dev-cpp/libcult-1.4.6-r1)
dev-cpp/libxsd-frontend-1.18.0-r3 (>=dev-cpp/libcult-1.4.6-r1)
dev-cpp/xsd-3.3.0-r3 (>=dev-cpp/libcult-1.4.6-r1)
localhost attila # equery depends dev-util/build
* These packages depend on dev-util/build:
dev-cpp/libbackend-elements-1.7.2 (dev-util/build:0.3)
dev-cpp/libcult-1.4.6-r1 (dev-util/build:0.3)
dev-cpp/libfrontend-elements-1.1.4 (dev-util/build:0.3)
dev-cpp/libxsd-frontend-1.18.0-r3 (dev-util/build:0.3)
dev-cpp/xsd-3.3.0-r3 (dev-util/build)
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 I definitely use VLC, SOX, libav (for ffmpeg and Blender), and I do not know exactly, but maybe the x11-libs/libXvMC and dev-util/build have some very serious roles on my system.
I am a newbie, so there is chance that I've totaly mistaken something. In this case please explain me, why portage wants to remove packages, what are shown dependencies of others by equery? And how can I check the correctness in a more adequate way.
If I am not mistaken, please help me work around this problem with portage. |
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albright
Advocate
Joined: 16 Nov 2003
Posts: 2588
Location: Near Toronto
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| Posted: Fri Aug 22, 2014 11:20 am Post subject: |
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depclean is, in my experience, dangerous; one has to carefully
examine what it proposes to do
I notice that in the emerge man page under depclean we
find both:
| Quote: | | Packages that are part of the world set will always be kept |
and
| Quote: | packages listed in package.provided (see portage(5)) may be removed by
depclean, even if they are part of the world set. |
nobody seems to know what depclean will actually do 
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doing as simply messing about with Linux ...
(apologies to Kenneth Graeme) |
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xaviermiller
Bodhisattva
Joined: 23 Jul 2004
Posts: 8708
Location: ~Brussels - Belgique
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| Posted: Fri Aug 22, 2014 11:33 am Post subject: |
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Hello,
The dependencies you shows depend on USE flags. Are those USE flags enabled ?
_________________
Kind regards,
Xavier Miller |
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asturm
Developer
Joined: 05 Apr 2007
Posts: 8935
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| Posted: Fri Aug 22, 2014 11:35 am Post subject: |
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--depclean has been reliable the last 1 or 2 years to the extent that portage now even recommends to run it after an update. Before, the situation was dire.
Have your USE flags changed since install? e.g., the following two deps
| Code: | localhost attila # equery depends media-sound/wavpack
* These packages depend on media-sound/wavpack:
media-sound/sox-14.4.1 (wavpack ? media-sound/wavpack)
localhost attila # equery depends media-video/vcdimager
* These packages depend on media-video/vcdimager:
media-video/vlc-2.1.2 (vcdx ? >=media-video/vcdimager-0.7.22:0) |
are only in effect if you have really enabled wavpack for sox and vcdx for vlc, `equery d` does not check whether that is the case.
Then you have several packages whose consumers are also part of the --depclean, so that is fine. |
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atemv
n00b
Joined: 09 Aug 2014
Posts: 63
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| Posted: Fri Aug 22, 2014 10:22 pm Post subject: |
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Thank everybody especially for XavierMiller and genstorm
| XavierMiller wrote: | Hello,
The dependencies you shows depend on USE flags. Are those USE flags enabled ? |
| genstorm wrote: | --depclean has been reliable the last 1 or 2 years to the extent that portage now even recommends to run it after an update. Before, the situation was dire.
Have your USE flags changed since install? e.g., the following two deps
| Code: | localhost attila # equery depends media-sound/wavpack
* These packages depend on media-sound/wavpack:
media-sound/sox-14.4.1 (wavpack ? media-sound/wavpack)
localhost attila # equery depends media-video/vcdimager
* These packages depend on media-video/vcdimager:
media-video/vlc-2.1.2 (vcdx ? >=media-video/vcdimager-0.7.22:0) |
are only in effect if you have really enabled wavpack for sox and vcdx for vlc, `equery d` does not check whether that is the case.
Then you have several packages whose consumers are also part of the --depclean, so that is fine. |
That was the case. I checked VLC and SOX with | Code: | | equery uses <packagename> |
and found the missing USE flags.
After I added them in /etc/portage/package.use and run
| Code: | | emerge --update --deep --newuse @world |
and the problematic dependencies disappeared from the list, and I figured out that, dev-util/build is not important for the system. It is needed for dev-cpp/xsd, what is a dependency for net-libs/libkolabxml.
So I guess If you use Kolab you will need it.
I ran
and everything still works, as far as I know.
Thanks again for the help |
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wrc1944
Advocate
Joined: 15 Aug 2002
Posts: 3435
Location: Gainesville, Florida
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| Posted: Sat Aug 23, 2014 5:50 am Post subject: |
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I agree with genstorm. Depclean is much improved over past years. Never have a problem anymore, and keeps my Gentoo ~Arch systems clean.
In fact, if you don't run depclean at least once in a while eventually you will run into problems with hard to figure out package conflicts and blocks.
One good practice is to always run revdep-rebuild immediately after running depclean (before rebooting), which should catch any problems that depclean may have caused by rebuilding against the updated packages, or replacing something it mistakenly removed (it's not perfect). Another is to use | Code: | | emerge -upDN @world |
for your update command.
Keep in mind you can always prevent depclean from removing a package it lists (such as a kernel or gcc version you wish to keep around), with the command (as an example) :
| Code: | | emerge --noreplace =gentoo-sources-3.15.7 |
Same goes for packages you just feel wary about removing, until you explore them a bit further. However, in my recent experience, depclean is almost always right, and revdep-rebuild always is your "safety measure."
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atemv
n00b
Joined: 09 Aug 2014
Posts: 63
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| Posted: Mon Aug 25, 2014 12:17 pm Post subject: |
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| wrc1944 wrote: | I agree with genstorm. Depclean is much improved over past years. Never have a problem anymore, and keeps my Gentoo ~Arch systems clean.
In fact, if you don't run depclean at least once in a while eventually you will run into problems with hard to figure out package conflicts and blocks.
One good practice is to always run revdep-rebuild immediately after running depclean (before rebooting), which should catch any problems that depclean may have caused by rebuilding against the updated packages, or replacing something it mistakenly removed (it's not perfect). Another is to use | Code: | | emerge -upDN @world |
for your update command.
Keep in mind you can always prevent depclean from removing a package it lists (such as a kernel or gcc version you wish to keep around), with the command (as an example) :
| Code: | | emerge --noreplace =gentoo-sources-3.15.7 |
Same goes for packages you just feel wary about removing, until you explore them a bit further. However, in my recent experience, depclean is almost always right, and revdep-rebuild always is your "safety measure." |
Thank you. This advice seems highly useful, I will keep it in mind. |
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