Hello Ludovic, thanks for the feedback. I tried to fix the patch and got some promising results. Please find the updated patch attached. Basically I patched 'blis/benchmark.py' to use "blas_opt_info" instead of "blas_ilp64_opt_info" and tests went fine. An issue with different numpy versions I guess? I also added "blis" and "python-numpy-next" to the "native-inputs". - Artyom