Using LaTeX 'siunitx' Package With Version 1 and 2

I always forget how to configure siunitx correctly in the preemble of a LaTeX document. What makes it worse it that newer TeX distributions deliver version 2 while older distributions still use version 1 and both use different configuration variables. If you use version 1, you’d probably want to use the following configuration:

% version 1 of siunitx package
\usepackage{siunitx}
\sisetup{per=fraction,fraction=nice,alsoload=binary,obeyall}

The setup configures fraction units to be printed using a fraction dash with superscript for nominator and subscript for denominator. The binary sub package loads bits and bytes units and obeyall makes inserted units inherit the font weight and font style of the context.

The same configuration for version 2 is as follows:

% version 2 of siunitx package
\usepackage{siunitx}
\sisetup{per-mode=symbol,detect-all}
\usepackage{xfrac}
\sisetup{per-mode=fraction,fraction-function=\sfrac,alsoload=binary}

As a result of this mess I always insert both specifications and comment out the unused.
Cheers,
iss