's' for system-wide. I think you are offered that as the default, so you will need to 'y' for yes if offered a system-wide install.
i tried home but it failed
It shouldn't have done. That's how I install it.
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I use the system-wide install, as that is the recommended configuration, and I've never got it to work in the Home directory anyway
Odd.
I originally had a system-wide installation but could never find anything, so re-installed from scratch in my home area (whereupon I discovered it came with documentation) and have done so ever since.
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