Description:
Upgrading pacman fails when /var/cache/pacman/pkg is not a directory.
error: cannot remove /var/cache/pacman/pkg/ (Not a directory)

Having a symbolic link instead of a regular directory is sometimes useful.
For instance: we have 4 machines in the lab running Arch Linux and /var/cache/pacman/pkg points to a shared directory so that we only have to download the packages once.

A simple workaround solution is to remove the symbolic link and create a regular directory before upgrading pacman.
It would be best that pacman would test whether /var/cache/pacman/pkg/ actually exists, but not whether is is a directory.


Additional info:
* package version(s): 4.2.0-6
* config and/or log files etc.: probably related to the following line in the pkg’s .MTREE: ./var/cache/pacman/pkg time=1421041471.590510732 type=dir


Steps to reproduce:
rm -rf /var/cache/pacman/pkg ; ln -s [path-to-repository] /var/cache/pacman/pkg ; pacman -S pacman