On Wed, 25 Jan 2017 13:44:26 -0500
Hendrik Boom <hendrik@???> wrote:
> It turns out my problems with aptitude seem to be over, after doing
> 
>     apt purge aptitude
>     apt install aptitude
This appears to be a kind of redmondish solution... I'm wondering, if 
$ rm /var/lib/aptitude/pkgstates*
would have been sufficient? See man(5) aptitude, section "Files".
libre Grüße,
Florian