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

Changes

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

New Contributors

• @clementperon made their first contribution in #4679
• @rs-blade made their first contribution in #4728
• @pavlomuts made their first contribution in #4737
• @flokli made their first contribution in #4745

Known issues

Wrappers (.Net, Java, Python)

• routing: SetAllowedVehiclesForIndex not working in wrappers (changed parameters) #4982

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