how to check siunitx package installed or not

[Mike Marchywka]

I just made a bunch of scripts to modify the kpse variables so when I start a latex
project it takes the system values and adds stuff to the front as well as back...
In theory anyway the system values can change and this is a transparent prepend.
or append.
The syntax IIRC was a bit different for normal paths ( something about descending into
subdirs ) but logic similar. 
________________________________________
From: texhax <texhax-bounces+marchywka=hotmail.com at tug.org> on behalf of Peter Flynn <peter at silmaril.ie>
Sent: Friday, May 8, 2020 5:52 AM
To: texhax at tug.org
Subject: Re: how to check siunitx package installed or not

On 08/05/2020 10:30, Mike Marchywka wrote:
[...]
> I expected some issues with this and created a bunch of places to
> prepend search paths for locations to dump candidate packages that
> may fix problems with current ones lol.  Quickly grepping my
> directories and scripts though I'm not sure if everything did finally
> work without a lot of kluges..

This is why I recommend using the standard personal TeX directory idea:
it saves having to edit paths that will get overwritten by a version update.

P