Re: [Rpm-maint] splitting packages

[Ales Kozumplik]

During our IRC discussion today we arrived at a couple of possible 
solutions to this. Without proposing any one in particular yet (but 
ideologically leaning towards the dynamic dep language), here's a summary:


https://github.com/akozumpl/dnf/wiki/Package-Splitting

Ales

On 06/30/2014 03:52 PM, Ales Kozumplik wrote:

Hello people,

this is about [1], i.e. the fact that DNF currently doesn't support an
upgrade path where a package is split into several new packages. It
would be better suited for yum-devel but I'm posting it here since
Michael doesn't read yum-devel.

There are two approaches to this out there that I know of: the Fedora
way where N new packages obsolete the old package [2] [3]. When Yum sees
this during 'yum upgrade' it installs all the N new pacakges and removes
the old one. Note that the Fedora guidelines and even the Yum manual
page are quite vague on the exact semantics of how splitting and
renaming works. I'd be interested to find a better description somewhere.

There is a different convention used in SUSE [4] that employs a special
'split-alias' provide. Michael said in the bugzilla this is not a
desirable approach.

Before I try to come up with a proposal on fixing this, does somebody
have a proposal at hand? Could supplements: or similar help? Are there
reasons to move away from what Yum does (besides that using 'obsoletes:'
is a bit random thing for it, i.e. I imagine it was more picked because
it didn't break anything else in the RPM world than picked as a design
decision)?


Ales


[1] https://bugzilla.redhat.com/show_bug.cgi?id=1107973
[2]
http://fedoraproject.org/wiki/Upgrade_paths_%E2%80%94_renaming_or_splitting_packages#Binary_package_naming_changes

[3] https://fedoraproject.org/wiki/Packaging:Conflicts#Splitting_Packages
[4]
http://en.opensuse.org/openSUSE:Package_dependencies#Splitting_a_package_into_two

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Re: [Rpm-maint] splitting packages

[Thierry Vignaud]

On 30 June 2014 15:52, Ales Kozumplik akozu...@redhat.com wrote:
 Hello people,

 this is about [1], i.e. the fact that DNF currently doesn't support an
 upgrade path where a package is split into several new packages. It would be
 better suited for yum-devel but I'm posting it here since Michael doesn't
 read yum-devel.

 There are two approaches to this out there that I know of: the Fedora way
 where N new packages obsolete the old package [2] [3]. When Yum sees this
 during 'yum upgrade' it installs all the N new pacakges and removes the old
 one. Note that the Fedora guidelines and even the Yum manual page are quite
 vague on the exact semantics of how splitting and renaming works. I'd be
 interested to find a better description somewhere.

 There is a different convention used in SUSE [4] that employs a special
 'split-alias' provide. Michael said in the bugzilla this is not a desirable
 approach.

 Before I try to come up with a proposal on fixing this, does somebody have a
 proposal at hand? Could supplements: or similar help? Are there reasons to
 move away from what Yum does (besides that using 'obsoletes:' is a bit
 random thing for it, i.e. I imagine it was more picked because it didn't
 break anything else in the RPM world than picked as a design decision)?

I think the appropriate ml would be DNF one, not this one...
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