#940819 aptitude: meaningless message "it is being removed because..." / issue with ORed dependency

Package:
aptitude
Source:
aptitude
Description:
terminal-based package manager
Submitter:
Vincent Lefevre
Date:
2021-11-17 13:57:05 UTC
Severity:
normal
#940819#5
Date:
2019-09-20 09:48:53 UTC
From:
To:
During an upgrade, a package is automatically marked as to be removed
and the corresponding reason is meaningless:

xserver-xorg-video-tdfx (remove, 1:1.4.7-1+b1) was installed automatically; it ▒
is being removed because all of the packages which depend upon it are being    ▒
removed:                                                                       ▒

but there are no removed packages (no packages are listed).

FYI:

zira:~> aptitude why xserver-xorg-video-tdfx
i   xserver-xorg            Depends  xserver-xorg-video-all | xorg-driver-video
i A xserver-xorg-video-tdfx Provides xorg-driver-video

and xserver-xorg-video-all is installed. I don't think that this
output is correct either because as xserver-xorg-video-all is installed,
the xorg-driver-video dependency should be ignored. Thus this is not the
reason why xserver-xorg-video-tdfx is installed.

I've attached the compressed pkgstates file.
#940819#10
Date:
2019-09-20 10:43:43 UTC
From:
To:
(which was installed on my machine) had

Provides: xorg-driver-video

but the new version xserver-xorg-video-tdfx 1:1.5.0-1 no longer has it.

aptitude should detect when the "all of the packages which depend upon
it are being removed" list is empty and output an alternate message
instead, because the reason is different.
#940819#15
Date:
2021-11-17 13:55:19 UTC
From:
To:
This time with: