[Mageia-dev] RFC: Add versioned require in rpm on rpm-helper

Mon Apr 16 11:36:09 CEST 2012

On 16 April 2012 11:30, Thomas Backlund <tmb at mageia.org> wrote:
+>>>> That will work for urpmi that will upgrade rpm first before restarting
+>>>> but not for installer that doesn't need restarting itself (since we do
+>>>> not  use the system's urpmi).
+>>>
+>>> But AFAIK installer obeys rpm requires,
+
+(...)
+
+>> Read again what I wrote: installer doesn't do any priority upgrade since
+>> it doesn't need upgrading itself and doesn't use the installed system
+>> rpm/urpmi
+>
+> Ah, you only mentioned system urpmi (not rpm) first time.
+>
+> but wont installer already use correct rpm/rpm-helper, since it's built from
+> current cauldron packages?
+> (and can be rebuilt again after updated rpm-helper)
+
+installer runs packages post-scripts in their chrooted environment,
+aka the installed system.
+
+>>> and since rpm is a priority package, it will be done in the beginning,
+>>> wont
+>>> it ?
+>>
+>> NO.
+>
+> but since it's already correct version in stage2, we should already be ok,
+> or... ?
+
+Unless you add specific versionated requires, you've no guaranties that rpm
+will get updated before foobar which has a systemd unit and requires
+an up to date rpm-helper.
+
+>>>> A somewhat nicer fix would be to auto generate some
+>>>> 'needs-systemd-aware-rpm-helper'
+>>>> requires for packages providing systemd units, having rpm-helper
+>>>> fulfil this provides
+>>>
+>>> Then we wouldn't need this.
+>>
+>> Yes we do
+>
+> So instead of fixing one package we will have to fix many packages :/
+
+That has always be the way to do.
+Any package should require what it needs for its post/pre scripts.
+For systemd units, that means, an up to date rpm-helper.
+
+Another way would be to alter the installer (see install/pkgs & media.pm)
+in order to install first urpmi by handling priority upgrades w/o
+actually restarting
+itself of course. (Might need urpmi changes).
+
+Or to explicitly upgrade rpm/rpm-helper first.
+