Python matplotlib can’t show plot in NON-NixOS

[doronbehar]

@daleonpz

                    pkgs.nixgl.nixGLIntel
                    python·
                    python.pkgs.pyserial
                    python.pkgs.numpy
                    python.pkgs.matplotlib

I’m not sure about the nixgl thing there, but I’d try instead:

(python.withPackages(ps: [
    ps.pyserial
    ps.numpy
    ps.matplotlib
]))