Detecting circular dependencies

SxN · Last edited by SxN on Wed Nov 25, 2009 9:44 pm; edited 2 times in total

A freshly installed Gentoo... mmm... smells good! Now I want KDE, and emerge complains of circular dependencies
(and advises to temporarily disable USE flags for optional dependencies).

How can I find them?

Thanks,
SxN

Mike Hunt · Watchman Joined: 19 Jul 2009 Posts: 5287

post the bottom part of the output (the part that shows all the blocks) of emerge -ptv kde-meta please.

If it's very long paste it on http://pastebin.com and post the URL here please.

SxN · Posted: Mon Nov 23, 2009 5:47 am Post subject:

... lots of

gringo · Advocate Joined: 27 Apr 2003 Posts: 3793

This looks like you have changed your USEs or changed the profile ?
looking to the ebuild of epydoc it looks like dev-lang/python[tk] is requiered in case epydoc is built with the X USE, so try to build that first or disable the X flag for this package in case you don´t need the tk frontend.

hope this helps.

cheers
_________________
Error: Failing not supported by current locale

SxN · Posted: Mon Nov 23, 2009 2:15 pm Post subject:

The profile was not touched. As for the flags, when I installed Gentoo, at the step explaining the USE flags I stopped, read them and their meaning one by one, then included what I thought necessary for me.

After finishing successfully I went on to install KDE. The documentation suggests to issue

gringo · Advocate Joined: 27 Apr 2003 Posts: 3793

SxN · Posted: Mon Nov 23, 2009 9:10 pm Post subject:

Took out tk, and here is the result

Mike Hunt · Watchman Joined: 19 Jul 2009 Posts: 5287

For KDE4 you need mysql, sql, webkit, mng USE flags, and you need them to upgrade KDE4 whenever there is a new version.

You should change qt3 to qt3support

You can enable the 10.0/desktop profile which will preset most of those USE flags for you, so you won't need to clutter your make.conf.

Generally, the threads USE flag is not needed globally, but if you know that you need it...

In fact, that is the basic rule-of-thumb™ for each USE flag - ideally they should be enabled/disabled only for valid reasons.

Have fun.

cwr · Veteran Joined: 17 Dec 2005 Posts: 1969

FWIW, in your post above I think it's the doc flag on dbus-python which is
pulling in epydoc, which in turn needs python emerged with +tk. I had
some problems with tcl/tk in my last build, so emerged the system without
it; however, that's using Gnome, so there may be something in KDE which
prevents dropping tcl/tk entirely.

Will

Mike Hunt · Watchman Joined: 19 Jul 2009 Posts: 5287

Right ok. If you want to set the doc USE flag globally then yes you also need jadetex tk threads USE flags

You can't disable the tk flag and still keep the doc flag.

Either re-enable the tk flag and post the output of

SxN · Posted: Tue Nov 24, 2009 9:18 pm Post subject:

I started by eliminating one flag at a time, in the order listed above, then reissuing an emerge -pvt kde-meta.

I noticed a different feedback only when I got to doc:

Mike Hunt · Watchman Joined: 19 Jul 2009 Posts: 5287

First, you don't have to live without doc. Some users have the doc flag enabled globally.

You must decide if you want doc globally or not - same with all flags BTW.

Once you've decided, then it becomes a case of tracking down and resolving each block one by one.

So what do you really prefer? To doc or not to doc, that is the question.

SxN · Posted: Wed Nov 25, 2009 3:05 am Post subject:

To doc, if it is possible

Thanks,
SxN

An update: I started to take out groups of flags. When I eliminated the group between mpeg and plotutils, I end up with a simpler circular dependency:

Mike Hunt · Watchman Joined: 19 Jul 2009 Posts: 5287

Ok, cool. Glad it's working now

cwr · Veteran Joined: 17 Dec 2005 Posts: 1969

SxN · Posted: Wed Nov 25, 2009 9:44 pm Post subject:

I am re-opening the issue, as I stumbled over circular dependencies again.

While emerging KDE, it failed stating that:

Mike Hunt · Watchman Joined: 19 Jul 2009 Posts: 5287

I wonder why KDE needs openldap, and with sasl support.

can you post your emerge --info please.

Please don't set use flags on the command line, use /etc/portage/package.use instead.

You should be able to resolve that block by running

SxN · Posted: Thu Nov 26, 2009 3:23 pm Post subject:

SxN · Posted: Thu Nov 26, 2009 3:54 pm Post subject:

Meanwhile, I'm loosing myself in a maze here...

Mike Hunt · Watchman Joined: 19 Jul 2009 Posts: 5287

look at eselect java-vm list
and you can set a vm like so: eselect java-vm set [user|system] [vm]

Otherwise, whatever reason you need all those USE flags is beyond me.

I would keep the desktop profile, then backup make.conf cp /etc/{make.conf,make.conf.backup}
then remove all the USE flags in make.conf
then run emerge -uDNpv world

and start adding USE flags one-at-a-time and re-running emerge -uDNpv world after adding one flag, until all the blocks are gone, and you have the flags that you know you need/want - including the doc flag, if you are so inclined.

Also, you should look at how to use the /etc/portage/package.use file/folder. Tthere is a Use flags chapter about that in the Gentoo Handbook.

SxN · Posted: Sat Nov 28, 2009 3:25 am Post subject:

It's Friday night here, and I was poised to go flag by flag and see where is the conflict. Before that, though, I tried an

Mike Hunt · Watchman Joined: 19 Jul 2009 Posts: 5287

If a USE flag is not set by a profile, and portage doesn't ask for one, there is absolutely no need to enable a USE flag, unless you know that you need it and why you need it.

The purpose of USE flags isn't optimization, they only add optional functionality that some packages are able to provide.

For example: kdelibs has a kerberos USE flag available, but what would be the point of enabling it if kerberos is not used. Same is true for all USE flags. In fact enabling USE flags for nothing can bloat your code, add unnecessary complexity and add unused dependencies.

Do you have dev-java/icedtea6-bin installed? I think it should be pulled in by the java USE flag.
Is there anything java related other than dev-java/java-config installed?

If you don't have portage-utils installed, emerge it and run qlist -I java

SxN · Posted: Mon Nov 30, 2009 3:20 am Post subject:

SxN · Posted: Mon Nov 30, 2009 4:15 am Post subject:

Using

Mike Hunt · Watchman Joined: 19 Jul 2009 Posts: 5287

You can always see which USE flags are enabled in emerge --info

So, if you want -gnome, then yes you would need to disable gnome in make.conf.

Check your emerge --info after every flag you enable/disable.
That way you will see if you are actually really doing anything. :wink: