2

I'm running apt-cache rdepends to determine which packages are essential on my machine.

For alex, I got the following:

$ apt-cache rdepends alex --installed
alex
Reverse Depends:
    alex:i386

The problem is that alex:i386 is actually not installed. Why would it show up? What am I doing or understanding wrong?

0

This is a bug in apt-cache.

apt-cache rdepends alex shows

alex
Reverse Depends:
  haskell-platform
    alex:i386
  haskell-platform
    alex:i386

alex:i386 isn’t part of the reverse-dependency chain (there is no chain here, since --recurse wasn’t used); it’s shown because it’s another solution for the dependency.

Adding --installed filters out the haskell-platform lines, but not the alex:i386 lines...

The next release of apt from the master branch will include a fix for this.

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