On 26/06/2020 23:20, Brian Inglis wrote:
On 2020-06-26 12:04, Yasuhiro KIMURA wrote:
From: Brian Inglis <brian.ing...@systematicsw.ab.ca>
Subject: Re: Listing only manually installed package
Date: Fri, 26 Jun 2020 11:20:26 -0600

$ grep '\s1$' /etc/setup/installed.db   # manual
$ grep '\s0$' /etc/setup/installed.db   # auto

$ awk '1 == $3' /etc/setup/installed.db # manual
$ awk '0 == $3' /etc/setup/installed.db # auto

I can't remember what the pristine state of the Base category packages are,
I've messed around with the setup files so much for so long.

I checked /etc/setup/installed.db on my 32bit and 64bit console but in
each case all lines end with "0". Therefore,

From: Andrey Repin <anrdae...@yandex.ru>
Subject: Re: Listing only manually installed package
Date: Fri, 26 Jun 2020 20:15:21 +0300

AFAIK, there's no way to tell if a package was manually selected or not.
Cygwin's setup just don't store this information.

As you say, unfortunately there seems to be no way to tell if a
package was installed manually or automatically.

Just checked the setup sources, so unless there is a bug, you are running a
setup version over 5 years old, or not running Cygwin setup, user_picked is part
of the package metadata that is still read from and written to installed.db.

Unfortunately, it seems there is a bug (since 2.895, 18 months ago, ...), and this information doesn't always get recorded correctly.

Thanks for drawing my attention to this.
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