[arch-projects] Do we still need 'whoneeds'?

Karol Blazewicz karol.blazewicz at gmail.com
Thu Dec 8 11:03:16 EST 2011

pactree can print reverse dependency tree since pacman 3.4:

comm -12 <(pactree -lru $1|sort) <(pacman -Qqe|sort) | grep -v $1
is much faster than 'whoneeds $1' for bigger dep trees:  0.15 sec v.
10 sec. for 'whoneeds zlib' on my system (Pentium 4 @ 2 GHz).

'whoneeds' prints 'Packages that depend on [$1]' as the first line of
output, the one-liner I came up with does not.

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