Jackson Oursland

Add pixi package manager support.

16

[`pixi`](https://prefix.dev/) is a modern Python package manager that uses the `conda-forge` and PyPI packages. Unlike similar previous package managers such as `conda` and `mamba`, `pixi` maintains a lock file to...

This per-language pattern is the recommended pattern over setting `RULE_LAUNCH_COMPILE` globally.

pixi: Add run freecad configuration for Windows.

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Windows requires running from an installed FreeCAD, not simply the build environment. This commit performs the install and execution from the installation environment.

Vendor Ondsel Solver

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With the unfortunate demise of Ondsel, the OndselSolver has been left archived and unmaintained. This PR vendors OndselSolver in the `src/Mod/Assembly/OndselSolver` directory so that it may be maintained and issues...

Linux: Force QT_QPA_PLATFORM=xcb for Wayland compat.

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Linux: Force QT_QPA_PLATFORM=xcb for Wayland compatibility. ## Issues * https://github.com/FreeCAD/FreeCAD/issues/19352 * https://github.com/FreeCAD/FreeCAD/issues/20238 * https://github.com/FreeCAD/FreeCAD/issues/17982 * https://github.com/FreeCAD/FreeCAD/issues/18036 * https://github.com/FreeCAD/FreeCAD/issues/18242 * https://github.com/FreeCAD/FreeCAD/issues/8341 ## Before and After Images N/A

Since macOS 15.4, these duplicate `RPATH`s cause a failure to load libraries, resulting in an inability to import `numpy`, breaking many workbenches and macros. This PR removes the duplicate `RPATH`s...

This patch is necessary for successful building on Windows platforms using the [MSYS2](https://www.msys2.org/) platform.

CMake: use CMAKE_REQUIRED_LINK_OPTIONS instead of CMAKE_REQUIRED_FLAGS for linker flags.

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See https://github.com/google-deepmind/mujoco_mpc/pull/253