Why would you need a Conda package to measure performance or BLIS or another implementation? Assuming an ELF system, either preload an alternative library, or

Why would you need a Conda package to measure performance or BLIS or another implementation? Assuming an ELF system, either preload an alternative library, or make a trivial shim for libblas.so3, as the Fedora blis package does. See the somewhat old https://loveshack.fedorapeople.org/blas-subversion.html https://loveshack.fedorapeople.org/blas-subversion.html for example.