Debian Bug report logs - #1101487
libkokkos-dev: file conflict as vendered in libtrilinos-kokkos-dev

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Message #5 received at submit@bugs.debian.org (full text, mbox, reply):

From: Jochen Sprickerhof <jspricke@debian.org>

To: Debian Bug Tracking System <submit@bugs.debian.org>

Subject: libkokkos-dev: file conflict as vendered in libtrilinos-kokkos-dev

Date: Fri, 28 Mar 2025 11:36:31 +0100

Source: libkokkos-dev
Version: 4.5.01-1.2
Severity: serious
X-Debbugs-Cc: Graham Inggs <ginggs@debian.org>, Alex Myczko <tar@debian.org>, Nils Schild <nils.schild@posteo.de>
User: dabian-qa@lists.debian.org
Usertags: fileconflict
Control: affects -1 + libtrilinos-kokkos-dev

Hi,

I have NMUed src:kokkos with the intention to get it into trixie. As
part of it I fixed the multi arch problem by moving the cmake files from
/usr/lib/cmake to usr/lib/${DEB_HOST_MULTIARCH}/. Now libkokkos-dev has
a undeclared file conflict as both provide KokkosConfig.cmake. Even
more, libtrilinos-kokkos-dev seems to vendor kokkos 3.0 whereas
libkokkos-dev contains kokkos 4.0. This bug is to block the file
conflict from migrating to testing and to discuss how to resolve the
duplicated packaging.

As I have no deeper insights on both packages nor their downstreams, I
would be happy to get comments from both maintainers.

Cheers Jochen

Message #18 received at 1101487@bugs.debian.org (full text, mbox, reply):

From: Helmut Grohne <helmut@subdivi.de>

To: Jochen Sprickerhof <jspricke@debian.org>, 1101487@bugs.debian.org

Subject: Re: Bug#1101487: libkokkos-dev: file conflict as vendered in libtrilinos-kokkos-dev

Date: Mon, 31 Mar 2025 15:27:05 +0200

Control: reassign -1 libkokkos-dev 4.5.01-1.2

Jochen originally assigned it to src:libkokkos-dev and then Graham
reassigned it to src:kokkos, but that makes the conflict detector not
see it either as it only thinks about binary packages.

If reassigning, please go

    Control: reassign -1 libtrilinos-kokkos-dev VER
    Control: affects -1 = libkokkos-dev

I'll leave the technical bits to you.

Thanks

Helmut

Message #29 received at submit@bugs.debian.org (full text, mbox, reply):

From: Nils Schild <nils.schild@posteo.de>

To: 1101487@bugs.debian.org, Debian Bug Tracking System <submit@bugs.debian.org>

Cc: Graham Inggs <ginggs@debian.org>, Alex Myczko <tar@debian.org>, Jochen Sprickerhof <jspricke@debian.org>

Subject: Re: Bug#1101487: libkokkos-dev: file conflict as vendered in libtrilinos-kokkos-dev

Date: Thu, 3 Apr 2025 17:42:49 +0000

Hi,

Trilinos can be build with an external Kokkos package if the version 
matches.
The current required version for Kokkos to be compatible with Trilinos 
in Debian would be 4.1.0 
(https://salsa.debian.org/science-team/trilinos/-/blob/master/packages/tpetra/CMakeLists.txt?ref_type=heads#L27).
In the latest Trilinos version Kokkos would requires the latest release 
4.6.0.

Searching a bit in the Trilinos documentation I found -D 
TPL_ENABLE_KOKKOS=ON as a CMake configuration flag to build with an 
external Kokkos package.
I am not yet sure how to point Trilinos to the external Kokkos install. 
Usually Kokkos_ROOT or Kokkos_DIR should be set in the cmake configuration.
If Kokkos can be found in the default paths maybe cmake is capable to 
find the install without specifying the path.

This might solve the issue.

Best regards,
Nils

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