Anyone else periodically pacman -Q and "clean house"?

Every so often when I've gone through a period of installing/uninstalling 50 or 60 things, I notice my root partition is filling up, so I start going through and removing things.
For the uninitiated, that means uninstalling things and then running pacman -Rs $(pacman -Qqtd) to clear out unneeded dependencies.
Managed to get rid of about a gig and a half of crap. Felt good.

takedown wrote:
SomeGuyDude wrote:For the uninitiated, that means uninstalling things and then running pacman -Rs $(pacman -Qqtd) to clear out unneeded dependencies.
For me, pacman -Rs $(pacman -Qqtd) don't work.
This method give me wrong packages, for example:
bash$ pacman -Qqtd
automake
automoc4
bigreqsproto
cdrdao
cmake
cyrus-sasl
flex
git
glproto
gtk-qt-engine
kdemultimedia-kmix
kdemultimedia-mplayerthumbs
libcaptury
libidn
libmsn
libmtp
libnjb
libotr
libstdc++5
mercurial
netkit-bsd-finger
normalize
openslp
ortp
pkgconfig
postgresql
pyqt
qca-ossl
resourceproto
rpcbind
sox
speex
subversion
xcmiscproto
xf86driproto
xtrans
Much of this packages I really don't know if need it or no, but for example, I really need: cdrao (k3b), git, suversion and mercurial (some packages from aur need it), pyqt (I install it explicit, for programming), gtk-qt-engine (gtk under kde4 look n feel), kdemultimedia-kmix (I really need it).
It's a bug? It's a bad usage of pacman?
PD: sorry my poor english
I used to think the same thing.
-Qqtd returns packages that were installed as a *runtime* dependency for another package which is no longer installed. i've never seen it report packages not satisfying these two conditions.
mercurial, subversion, automake... these are common *buildtime* dependencies. they're often required by AUR packages which you build yourself... once built, you no longer need these packages and they are picked up by -Qqtd. the more i use AUR, the less i can use that handy find-the-orphans one-liner effectively.
the other ones that you still think are mistakes, please use -Qi to check dependencies (i.e. k3b does not depend on cdrao) and to make sure things are listed as "explicitly installed" (i.e. pyqt).
if -Qi really contradicts -Qqdt, feel free to report a bug.

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Anyone else periodically pacman -Q and "clean house"?

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