From mboxrd@z Thu Jan  1 00:00:00 1970
From: ludo@gnu.org (Ludovic =?UTF-8?Q?Court=C3=A8s?=)
Subject: bug#29088: Superseded package is not rebuild if native dependency
	changes
Date: Tue, 31 Oct 2017 23:27:09 +0100
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	(Hartmut Goebel's message of "Tue, 31 Oct 2017 18:32:45 +0100")
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To: Hartmut Goebel <h.goebel@crazy-compilers.com>
Cc: 29088@debbugs.gnu.org

Hi,

Hartmut Goebel <h.goebel@crazy-compilers.com> skribis:

> the package "gpgmepp" depends on native input "extra-cmake-modules".
> However if the alter is changed, gpgmepp is not rebuild.
>
> How to reproduce
>
>     git checkout master # important: without
>     http://debbugs.gnu.org/cgi/bugreport.cgi?bug=3D29087 applied
>
>     ./pre-inst-env guix build gpgmepp
>
> now apply http://debbugs.gnu.org/cgi/bugreport.cgi?bug=3D29087
>
>     ./pre-inst-env guix build extra-cmake-modules # the package changed
>     by patch 29087
>
>     ./pre-inst-env guix build gpgmepp
>     guix build: package 'gpgmepp' has been superseded by 'gpgme'
>     /gnu/store/ky8p7lllm9h9sv1zy0f742r1cc6qbd1l-gpgme-1.9.0
>
> This does *not* rebuild gpgmepp, but simply return the old store-path.

Superseded packages cannot be built/installed unwillingly.  In the
example above, what you built is =E2=80=9Cgpgme=E2=80=9D, not =E2=80=9Cgpgm=
epp=E2=80=9D, which is why
any changes to =E2=80=9Cgpgmepp=E2=80=9D had no effect.

To force a build of the superseded package, you can run:

  guix build -e '(@ (gnu packages kde-frameworks) gpgmepp)'

But again, the intended meaning of superseded packages is that they are
superseded and must no longer be used.

So to me this can be closed as =E2=80=9Cnot a bug.=E2=80=9D

HTH!

Ludo=E2=80=99.