[gentoo-dev] act-{user,group} & RDEPEND

[gentoo-dev] act-{user,group} & RDEPEND

[Thomas Deutschmann]

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Hi,

most packages are putting acct-{user,group}/* dependencies into RDEPEND.

What about packages using tmpfiles eclass and installing tmpfiles which
will make use of acct-{user,group}/* depedencies?

I.e. dev-db/mysql-init-scripts will install
"/usr/lib/tmpfiles.d/mysql.conf" with the following content:

> d /var/run/mysqld 0755 mysql mysql -

The package is a requirement for all
dev-db/{mysql,mariadb,percona-server} packages because it will provide
runscript/services.

To be able to start your chosen database server right after
installation, we trigger tmpfiles service in pkg_postinst via
tmpfiles_process().

Therefore, mysql user and group provided by acct-{user,group}/mysql must
be merged *before* tmpfiles_process() will be called or
"/var/run/mysqld" will be created as root:root which will prevent your
favorite database server to start.

However, devmanual
(https://devmanual.gentoo.org/general-concepts/dependencies/) says:

> Items which are in RDEPEND but not DEPEND could in theory be merged
> after the target package. Portage does not currently do this.
So don't we have a conceptual problem here and are just lucky that
current used PMs don't do at the moment what specification will allow
them to do?

Moving to (B)DEPEND will address the problem for non-binary package
users only.


-- 
Regards,
Thomas Deutschmann / Gentoo Linux Developer
C4DD 695F A713 8F24 2AA1 5638 5849 7EE5 1D5D 74A5


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Re: [gentoo-dev] act-{user,group} & RDEPEND

[Mike Gilbert]

On Wed, Aug 28, 2019 at 11:09 AM Thomas Deutschmann <whissi@gentoo.org> wrote:
>
> Hi,
>
> most packages are putting acct-{user,group}/* dependencies into RDEPEND.
>
> What about packages using tmpfiles eclass and installing tmpfiles which
> will make use of acct-{user,group}/* depedencies?
>
> I.e. dev-db/mysql-init-scripts will install
> "/usr/lib/tmpfiles.d/mysql.conf" with the following content:
>
> > d /var/run/mysqld 0755 mysql mysql -
>
> The package is a requirement for all
> dev-db/{mysql,mariadb,percona-server} packages because it will provide
> runscript/services.
>
> To be able to start your chosen database server right after
> installation, we trigger tmpfiles service in pkg_postinst via
> tmpfiles_process().
>
> Therefore, mysql user and group provided by acct-{user,group}/mysql must
> be merged *before* tmpfiles_process() will be called or
> "/var/run/mysqld" will be created as root:root which will prevent your
> favorite database server to start.
>
> However, devmanual
> (https://devmanual.gentoo.org/general-concepts/dependencies/) says:
>
> > Items which are in RDEPEND but not DEPEND could in theory be merged
> > after the target package. Portage does not currently do this.
> So don't we have a conceptual problem here and are just lucky that
> current used PMs don't do at the moment what specification will allow
> them to do?
>
> Moving to (B)DEPEND will address the problem for non-binary package
> users only.

There is an open bug to address this in a future EAPI.

https://bugs.gentoo.org/660306

Until then, putting the deps in RDEPEND is the best we can do.