During December 2025, Samuel Nunes focused on stabilizing CUDA toolkit integration within the pytorch/pytorch repository by extending compiler compatibility for CUDA versions 12.x and 13.0. He addressed missing GCC and Clang version bounds, eliminating build-time warnings and aligning the project with NVIDIA’s installation guidelines. Using Python and deep knowledge of CUDA and compiler compatibility, Samuel defined precise upper-bound semantics for version ranges, ensuring accurate interpretation across platforms. His work improved cross-version support on Linux, macOS, and Windows, reducing CI failures and streamlining developer onboarding. The depth of his contribution lay in careful validation and robust cross-platform compatibility enhancements.