v9.15

[Mizux]

What's Changed

Platforms

• Add Python 3.14 support.

Dependencies

C++

• abseil-cpp=20250814.1
• Protobuf=v33.1
• HiGHS=v1.12.0
• SCIP=v10.0.0
• Gurobi 13

Changes

• MPSolver-XPRESS: Remove superfluous calls to XPRSloadlp and XPRScreateprob by @pet-mit in MPSolver-XPRESS: Remove superfluous calls to XPRSloadlp and XPRScreateprob #4667
• cmake: update HiGHS to 1.11 by @galabovaa in cmake: update HiGHS to 1.11 #4670
• bazel: Bump HiGHS to 1.11 by @galabovaa in bazel: Bump HiGHS to 1.11 #4671
• cmake: Add support for custom protoc executable via OR_TOOLS_PROTOC_EXECUTABLE by @clementperon in cmake: Add support for custom protoc executable via OR_TOOLS_PROTOC_EXECUTABLE #4679
• Fix compilation with iterator with C++ 17 by @clementperon in Fix compilation with iterator with C++ 17 #4696
• Fix compat with protobuf < 5.26 by @clementperon in Fix compat with protobuf < 5.26 #4697
• Format py files by @gchatelet in Format py files #4702
• Turn some .i files into .swig by @gchatelet in Turn some .i files into .swig #4712
• Column generation Bin Packing heuristic based on CFT by @c4v4 in Column generation Bin Packing heuristic based on CFT #4639
• Add MPConstraint::Clear() to C# wrapper by @rs-blade in Add MPConstraint::Clear() to C# wrapper #4728
• Backport trivial changes by @gchatelet in Backport trivial changes #4734
• Backport string_view_migration.h by @gchatelet in Backport string_view_migration.h #4735
• Fix bazel load rules by @gchatelet in Fix bazel load rules #4740
• Fix load statements by @gchatelet in Fix load statements #4742
• Pass solution hint to HiGHS from mathopt by @pavlomuts in Pass solution hint to HiGHS from mathopt #4737
• build(deps): bump urllib3 from 2.2.2 to 2.5.0 in /bazel in the pip group across 1 directory by @dependabot[bot] in build(deps): bump urllib3 from 2.2.2 to 2.5.0 in /bazel in the pip group across 1 directory #4700
• math_opt: only run SCIP tests if enabled by @flokli in math_opt: only run SCIP tests if enabled #4745
• build(deps): bump actions/checkout from 4 to 5 in the github-actions group by @dependabot[bot] in build(deps): bump actions/checkout from 4 to 5 in the github-actions group #4752
• Remove unnecessary exports_files by @gchatelet in Remove unnecessary exports_files #4757
• build(deps): bump actions/setup-java from 4 to 5 in the github-actions group by @dependabot[bot] in build(deps): bump actions/setup-java from 4 to 5 in the github-actions group #4763
• build(deps): bump the github-actions group with 2 updates by @dependabot[bot] in build(deps): bump the github-actions group with 2 updates #4817
• build(deps): bump actions/checkout from 5 to 6 in the github-actions group by @dependabot[bot] in build(deps): bump actions/checkout from 5 to 6 in the github-actions group #4925
• build(deps): bump jupyterlab from 4.4.3 to 4.4.8 in /bazel in the pip group across 1 directory by @dependabot[bot] in build(deps): bump jupyterlab from 4.4.3 to 4.4.8 in /bazel in the pip group across 1 directory #4927

New Contributors

• @clementperon made their first contribution in cmake: Add support for custom protoc executable via OR_TOOLS_PROTOC_EXECUTABLE #4679
• @rs-blade made their first contribution in Add MPConstraint::Clear() to C# wrapper #4728
• @pavlomuts made their first contribution in Pass solution hint to HiGHS from mathopt #4737
• @flokli made their first contribution in math_opt: only run SCIP tests if enabled #4745

Known issues

MacOS

You must use swig <= 4.3.1 to avoid Director issue on python, unfortunately homebrew only provides the "broken" swig 4.4.1
to install swig manually:
first download swig 4.3.1: https://sourceforge.net/projects/swig/files/swig/swig-4.3.1/

# Optional uninstall brew version if any
brew uninstall swig

# Build swig from source and install it
cd /tmp
tar xzvf ~/Downloads/swig-4.3.1.tar.gz
cd swig-4.3.1/
./configure --prefix=${HOME}/swig-4.3.1
make
make install
export PATH="${HOME}/swig-4.3.1/bin:$PATH"
# To check
command -v swig
swig --version

ref: swig/swig#3279

Full Changelog: v9.14...v9.15

---

This discussion was created from the release v9.15.

[pavlomuts]

Thanks. It seems that this release is not uploaded to pypi registry yet.

[Mizux]

Thanks. It seems that this release is not uploaded to pypi registry yet.

no space left on pypi.org (10Go max), we have to remove previous release first but want to be sure to backup all wheel artifacts first...

[flokli]

Oof, deleting releases is really bad practice... If this is all properly tagged releases that you want to delete, or some unstable builds?

I'd really really prefer releases to not be deleted.

[Mizux]

the plan is to delete oldest release kind of rolling since we are limited to 10Go max and now a release is 20Mo * dozen wheel packages ([win x64, linux x64, linux arm64, macos intel, macos m1] * Python[3.9, 3.10, 3.11, 3.12, 3.13, 3.14]).

In the mean time, we plan to upload all previous release on github release pages aka you should be able to retrieve the wheel from github...

Any better idea are welcome, beside stopping to release new ortools version...

note: pybind11 do not support Python ABI3 aka we need to provide 1 wheel file per os x platform x python version.
note2: AFAIK pypi.org do not provide stat per version so we rely on release date to remove older ones
ref: https://pypistats.org/packages/ortools

[flokli]

Is there a way to reach out to pypi.org people? Maybe the limits could be bumped.

[hklarner]

Great job! Any updates on this issue regarding FinalizeAllowedVehicles of the routing package?? Is it fixed in v9.15? I am asking because this comment suggests it might have been.

[gregy4]

Is it possible in release notes to mention which parts of or-tools were changed? It seems for example that various fixes were done for cp-sat solver but release notes this time probably miss cp-sat completely.