pythonPackages.fs: build with all Python versions
pythonPackages.fs: build with all Python versions

and add updated explanation of why tests are disabled.
See also https://github.com/NixOS/nixpkgs/pull/13066

triton/triton,triton/triton,triton/triton,triton/triton,triton/triton,triton/triton,triton/triton,triton/triton