**Describe the bug** Running "meson configure" from master on Mesa 3D results in traceback message. **To Reproduce** * Checkout Mesa 3D source from https://gitlab.freedesktop.org/mesa/mesa * Run "meson configure" to get listing of project options. * * Traceback: [meson.txt](https://github.com/user-attachments/files/21418171/meson.txt) **Expected behavior** A listing of project options. **system parameters** * plain native build * Debian trixie * Python 3.13.5 * meson master * ninja 1.12.1