Well on a vanilla system I still get:
# aptitude -s purge debian-el
The following packages will be REMOVED:
debian-el{p} elpa-debian-el{u}
aptitude show says:
Package: elpa-debian-el
Version: 37.10
State: installed
Automatically installed: yes
Package: debian-el
Version: 37.10
State: installed
Automatically installed: no
True, when I installed them I had:
APT::AutoRemove::RecommendsImportant false;
APT::AutoRemove::SuggestsImportant false;
APT::Cache::AllVersions false;
APT::Clean-Installed false;
APT::Default-Release "unstable";
APT::Get::Fix-Missing true;
APT::Get::Purge true;
APT::Install-Recommends false;
APT::Keep-Downloaded-Packages true;
APT::Periodic::Enable false;
Acquire::PDiffs true;
Acquire::http::No-Cache true;
Aptitude::CmdLine::Always-Prompt true;
Aptitude::CmdLine::Show-Deps true;
Aptitude::CmdLine::Show-Why true;
Aptitude::CmdLine::Verbose 1;
Aptitude::Purge-Unused true;
Binary::apt::APT::Keep-Downloaded-Packages true;
OK, now doing purge, install, purge again, with my above settings list I
get:
# aptitude purge debian-el
The following packages will be REMOVED:
debian-el{p} elpa-debian-el{pu} (D: debian-el)
OK, I'll just purge debian-el, and then
install elpa-debian-el.
OK, now it is not marked Automatically Installed.
(I only dare use -s when I don't have my settings list installed,
as it might delete all my downloaded packages, etc.)
