Arch Linux

Description:
dkms is used to build fglrx module from catalyst with the following install file:
--8<--
post_install()
{
dkms add -m fglrx -v $1
dkms build -m fglrx -v $1
dkms install -m fglrx -v $1
}

post_upgrade()
{
# removing old version
dkms remove -m fglrx -v $2 --all
# then installing the new one
dkms add -m fglrx -v $1
dkms build -m fglrx -v $1
dkms install -m fglrx -v $1
}

pre_remove()
{
dkms remove -m fglrx -v $1 --all
}
-->8--

When installing a module managed by dkms, it create a symling from the /usr/src/mod-ver to /var/lib/dkms/mod-ver during the "add" step

The problem, when upgrading the package, the old package is removed, breaking the symlink created by dkms, so dkms cannot remove the previous module, leaving old modules in /lib/modules/... and old files/symling in /var/lib/dkms

The solution is to change the bahaviour of dkms: copying source files, instead of linking.