Finding which explicitly installed packages require some package

lardon · 2009-01-06 23:54:20

Wonder what you use python for? Or why this "faad2" package which just got upgraded is for?

I made this little scipt for you!

It simply shows which explicitly installed packages require some package. You use it like this:

$ whoneeds pacman
pacman
pacman-contrib
pkgstats
yaourt

It wasn't exactly trivial to make, so I thought I'd share it. It's still very hackish, but I guess the basic ideas are there.

.:B:. · 2009-01-07 00:12:39

While it looks nice, can you tell me what you use it for?

[stijn@hermes ~]$ pacman -Qi faad2|grep Required
Required By    : ffmpeg  mpd

Does pretty much the same, although it does not differ between explicitly installed packages and packages installed as a dependency of course. Do you use the script to clean out your installation?

Since an explicitly installed package that is needed by some other package turns into a dependency, I don't know if it's still relevant to know if it was explicitly installed or not...

rson451 · 2009-01-07 00:16:38

Very nice script.

hint: replace the two seds with one:

direct_needs=$(pacman -Qi $1 | tr "\n" " " |  sed "s/.*Required By *: *//;s/Conflicts With.*//")

lardon · 2009-01-07 07:28:18

Does pretty much the same, although it does not differ between explicitly installed packages and packages installed as a dependency of course. Do you use the script to clean out your installation?

pacman -Qi gives you the direct dependencies, whereas my script is recursive and will give you all dependencies up to the top level. It's very different.

hint: replace the two seds with one:

Thanks! I knew it was possible, I just didn't remember the syntax.

Daenyth · 2009-04-08 18:46:54

Do you have any objection to me including this script in the next release of pkgtools? I've been meaning to write this tool, but then rson showed me that you already had!

lardon · 2009-04-08 18:50:45

Daenyth wrote:

Do you have any objection to me including this script in the next release of pkgtools? I've been meaning to write this tool, but then rson showed me that you already had!

I'd be very happy to see it included in pkgtools! Go ahead!

Daenyth · 2009-04-08 19:10:46

Added to git and to pkgtools-git in AUR

I forgot to set you as the --author when I committed it.. sorry

Last edited by Daenyth (2009-04-08 19:11:16)

Arch Linux

#1 2009-01-06 23:54:20

Finding which explicitly installed packages require some package

#2 2009-01-07 00:12:39

Re: Finding which explicitly installed packages require some package

#3 2009-01-07 00:16:38

Re: Finding which explicitly installed packages require some package

#4 2009-01-07 07:28:18

Re: Finding which explicitly installed packages require some package

#5 2009-04-08 18:46:54

Re: Finding which explicitly installed packages require some package

#6 2009-04-08 18:50:45

Re: Finding which explicitly installed packages require some package

#7 2009-04-08 19:10:46

Re: Finding which explicitly installed packages require some package

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