[solved] How 2 find pkg of a file, when pkg is not installed

Waterdevil · Last edited by Waterdevil on Mon Aug 21, 2017 7:40 am; edited 1 time in total

Hello world,

I know "equery b file", but if a package is not installed and I know only the file, how can i find the package.

For instance emerge is complaining: ld cannot find -lusbredirparser.

So which package contains usbredirparser* or libusbredirparser*?

It seems, that I removed this file from /lib*/, what was a fault.

Many thanks
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eccerr0r · Posted: Sun Aug 20, 2017 11:23 pm Post subject:

www.google.com

too big? try forums.gentoo.org

:)

But seriously, I don't believe there's a database of files to all packages for Gentoo, it would be something that the developers would have to maintain (though I think it does exist for like debian or ubuntu...). Instead we have to find manually... (How did you get rid of the library and the tracking file at the same time, did you emerge --unmerge something instead of using --depclean?)

However, it's usually a bug if something fails to build by complaining about a missing library like that. Which package is it?

In any case I believe the package that contains libusbredirparser.so is sys-apps/usbredir . If qemu or spice-gtk is not building this properly then it's a bug (make sure you have USE=usbredir enabled first however.)
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Fitzcarraldo · Posted: Sun Aug 20, 2017 11:40 pm Post subject:

Well, there is app-portage/pfl, a 'Searchable online file/package database for Gentoo':

http://www.portagefilelist.de/site/start

Hu · Moderator Joined: 06 Mar 2007 Posts: 21633

If you unlinked the file, but did not uninstall the package that provides it, then equery belongs will still work. That relies on the package CONTENTS file, not the installed files.

eccerr0r · Posted: Mon Aug 21, 2017 1:32 am Post subject:

Oh cool... pfl... I guess this works too, though it would have been nice if there was a database maintained by the devs (so we don't have to send people our world files... just a privacy thing.)

Then again, it might actually be beneficial for the devs to have our world file data so they know who still is using each package.
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Waterdevil · Posted: Mon Aug 21, 2017 5:06 am Post subject:

@eccerr0r
I googled two weeks long without finding a solution.
Many thanks - emerge -1 sys-apps/usbredir and USE+="usbredir" could solve the problem, which I had with xen-tools.

@Fitzcarraldo
Very cool - thank you for pfl

@Hu
But not in my case - I had other issues and followed someone from google, who wrote one should rm -Rf /usr/lib*; rm -Rf /usr/portage ... - silly me.
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Hu · Moderator Joined: 06 Mar 2007 Posts: 21633

Your post said you removed the file, in which case equery should still work. I interpreted your initial question as believing that equery could only work when the package was both installed and intact. equery requires the package to be installed and the metadata intact, but the installed files can be damaged or missing and it can still use the metadata to answer your queries.