DNF vs YUM, $pkg, $pkg-mpi, $pkg-openmpi having same provides

[Orion Poplawski]

On 06/11/2015 10:01 AM, Sandro Mani wrote:
> Hello,
>
> Investigating bug #1230838, I noticed that when installing mmg3d-libs,
> dnf installs Konsole output ptscotch-mpich, whereas yum-deprecated
> installs scotch. Both scotch and  ptscotch-mpich provide the required
> libscotch.so.0()(64bit), albeit one in /usr/lib64/ and the other one in
> /usr/lib64/mpich/lib/:
>
> $ dnf repoquery --requires mmg3d-libs
> [...]
> libscotch.so.0()(64bit)
> libscotcherr.so.0()(64bit)
> [...]
>
>
> $ dnf provides 'libscotch.so.0()(64bit)'
> ptscotch-mpich-6.0.4-2.fc23.x86_64 : PT-Scotch libraries compiled
> against mpich
> Repo        : rawhide
>
> ptscotch-openmpi-6.0.4-2.fc23.x86_64 : PT-Scotch libraries compiled
> against openmpi
> Repo        : rawhide
>
> scotch-6.0.4-2.fc23.x86_64 : Graph, mesh and hypergraph partitioning library
> Repo        : rawhide
>
>
> Konsole output $ dnf repoquery -l scotch.x86_64 | grep libscotch.so.0
> /usr/lib64/libscotch.so.0
> /usr/lib64/libscotch.so.0.2
>
>
> Konsole output $ dnf repoquery -l ptscotch-mpich.x86_64 | grep
> libscotch.so.0
> /usr/lib64/mpich/lib/libscotch.so.0
> /usr/lib64/mpich/lib/libscotch.so.0.2
>
>
> $ dnf install mmg3d-libs
> [...]
> Installing:
>   environment-modules                   x86_64
> 3.2.10-14.fc23                    rawhide                   117 k
>   hwloc-libs                            x86_64
> 1.10.1-2.fc23                     rawhide                   1.3 M
>   lzma-libs                             x86_64
> 4.32.7-13.fc22                    rawhide                    38 k
>   mmg3d-libs                            x86_64
> 4.0.2-1.fc23                      rawhide                   211 k
>   mpich                                 x86_64
> 3.1.4-3.fc23                      rawhide                   1.1 M
>   ptscotch-mpich
>
> $ yum-deprecated install mmg3d-libs
> [...]
> Installing:
>   mmg3d-libs                     x86_64
> 4.0.2-1.fc23                         rawhide                     211 k
> Installing for dependencies:
>   lzma-libs                      x86_64
> 4.32.7-13.fc22                       rawhide                      38 k
>   scotch
>
>
> So, whose fault is this? Packaging of dnf? Nothing relevant for this
> caught my eye skimming through the packaging guidelines.
>
> And related: trying to install some $pkg-openmpi package, I don't
> generally see packages enforcing that the -openmpi version of some
> dependency library is installed as opposed to just the regular libs
> package. Should such requires need to be stated explicitly?

MPI packages need to filter out the provides from the MPI versions and 
explicitly add needed requires on the specific MPI flavors of packages 
needed.  This probably needs to be added to the MPI guidelines.

-- 
Orion Poplawski
Technical Manager                     303-415-9701 x222
NWRA/CoRA Division                    FAX: 303-415-9702
3380 Mitchell Lane                  orion at cora.nwra.com
Boulder, CO 80301              http://www.cora.nwra.com