Default for 'dnf copr enable'

[Miroslav Suchý]

Hi.
I want to get your feedback:

When you enable Copr repository you can run:
   dnf copr enable myname/project epel-9-x86_64
The last parameter is optional and most people usually runs:
   dnf copr enable myname/project

Dnf-plugins-core tries to guess [3] the correct chroot. On Fedora it is easy.
For Fedora 35 it is fedora-35-$arch.
But for RHEL/Centos/Centos Stream it is a bit tricky.

E.g. for C9S we now defaults to centos-stream-9-$arch. But this gets some pushback [1,2]. I want to know if this opinion 
is minority or whether majority of people wants this.
I do not think there is an option which is correct. So it is about choosing a default which is correct for most people.

Can you please tell me what is good default for you:

Centos Stream 9:
1) epel-9-$arch
2) centos-stream-9-$arch
3) centos-stream+epel-next-9-$arch
4) no default, print error and let user explicitly declare the chroot

[1] https://bugzilla.redhat.com/show_bug.cgi?id=2058471
[2] https://gitlab.com/redhat/centos-stream/rpms/dnf-plugins-core/-/merge_reques...
[3] https://github.com/rpm-software-management/dnf-plugins-core/blob/master/plug...

Miroslav

[Gary Buhrmaster]

On Mon, Apr 11, 2022 at 1:37 PM Miroslav Suchý  wrote:
> Can you please tell me what is good default for you:
>
> Centos Stream 9:
> epel-9-$arch
> centos-stream-9-$arch
> centos-stream+epel-next-9-$arch
> no default, print error and let user explicitly declare the chroot

As someone who has experienced
some of the challenges, if I have to
choose from those, 4 is the only one
that for me results in the least surprise
(you know what you are getting).

However, is there a 5th option?  That
would check to see if there are builds
in only one chroot, and select that (with
message), and if there more than one
chroot that contains builds reject the
request.  I suppose there is also a 6th
option, which would be to enable all
the chroots (and let the section enabled,
priorities and package versioning sort
it all out).  I don't really like 5 or 6,
as they can lead to later surprises,
but they at least have some appeal
for some common use cases.

[Carl George]

On Mon, Apr 11, 2022 at 8:38 AM Miroslav Suchý  wrote:
> Hi.
> I want to get your feedback:
>
> When you enable Copr repository you can run:
>    dnf copr enable myname/project epel-9-x86_64
> The last parameter is optional and most people usually runs:
>    dnf copr enable myname/project
>
> Dnf-plugins-core tries to guess [3] the correct chroot. On Fedora it is easy.
> For Fedora 35 it is fedora-35-$arch.
> But for RHEL/Centos/Centos Stream it is a bit tricky.
>
> E.g. for C9S we now defaults to centos-stream-9-$arch. But this gets some pushback [1,2]. I want to know if this opinion
> is minority or whether majority of people wants this.
> I do not think there is an option which is correct. So it is about choosing a default which is correct for most people.
>
> Can you please tell me what is good default for you:
>
> Centos Stream 9:
> epel-9-$arch
> centos-stream-9-$arch
> centos-stream+epel-next-9-$arch
> no default, print error and let user explicitly declare the chroot
>
> [1] https://bugzilla.redhat.com/show_bug.cgi?id=2058471
> [2] https://gitlab.com/redhat/centos-stream/rpms/dnf-plugins-core/-/merge_reques...
> [3] https://github.com/rpm-software-management/dnf-plugins-core/blob/master/plug...
>
> Miroslav
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In most cases, epel-9-$arch will be the correct choice.  In the bug
[0] it is suggested that when the guess is wrong it's simple to add
the chroot as an explicit argument.  Instead of making the majority of
users do `dnf copr enable <copr> epel-9-<arch>`, why can't we have a
tiny number of users do `dnf copr enable <copr>
centos-stream-9-<arch>` and have the plugin guess the correct thing
for the majority of users?

[0] https://bugzilla.redhat.com/show_bug.cgi?id=2058471#c1

[Neal Gompa]

On Tue, Jun 28, 2022 at 12:09 AM Carl George  wrote:
> On Mon, Apr 11, 2022 at 8:38 AM Miroslav Suchý  wrote:
> > Hi.
> > I want to get your feedback:
> >
> > When you enable Copr repository you can run:
> >    dnf copr enable myname/project epel-9-x86_64
> > The last parameter is optional and most people usually runs:
> >    dnf copr enable myname/project
> >
> > Dnf-plugins-core tries to guess [3] the correct chroot. On Fedora it is easy.
> > For Fedora 35 it is fedora-35-$arch.
> > But for RHEL/Centos/Centos Stream it is a bit tricky.
> >
> > E.g. for C9S we now defaults to centos-stream-9-$arch. But this gets some pushback [1,2]. I want to know if this opinion
> > is minority or whether majority of people wants this.
> > I do not think there is an option which is correct. So it is about choosing a default which is correct for most people.
> >
> > Can you please tell me what is good default for you:
> >
> > Centos Stream 9:
> > epel-9-$arch
> > centos-stream-9-$arch
> > centos-stream+epel-next-9-$arch
> > no default, print error and let user explicitly declare the chroot
> >
> > [1] https://bugzilla.redhat.com/show_bug.cgi?id=2058471
> > [2] https://gitlab.com/redhat/centos-stream/rpms/dnf-plugins-core/-/merge_reques...
> > [3] https://github.com/rpm-software-management/dnf-plugins-core/blob/master/plug...
> >
> > Miroslav
> > _______________________________________________
> > epel-devel mailing list -- [e-mail]
> > To unsubscribe send an email to [e-mail]
> > Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/
> > List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines
> > List Archives: https://lists.fedoraproject.org/archives/list/[e-mail]...
> > Do not reply to spam on the list, report it: https://pagure.io/fedora-infrastructure
>
> In most cases, epel-9-$arch will be the correct choice.  In the bug
> [0] it is suggested that when the guess is wrong it's simple to add
> the chroot as an explicit argument.  Instead of making the majority of
> users do `dnf copr enable <copr> epel-9-<arch>`, why can't we have a
> tiny number of users do `dnf copr enable <copr>
> centos-stream-9-<arch>` and have the plugin guess the correct thing
> for the majority of users?
>
> [0] https://bugzilla.redhat.com/show_bug.cgi?id=2058471#c1

It should have never been changed to behave differently in the first
place. The only real acceptable alternative other than the main epel
chroots is to have it use epel-next chroots for CentOS Stream.
However, those are not available in COPR at this time, so we use the
EPEL ones.