Recommendations for testing applications optionally supporting and not XDG compliant systems

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Hello!

I would like to have the capability to test changes to applications both in
XDG Systems and not XDG Systems.

What would you recommend?

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<div dir="ltr"><div><div>Hello!<br><br></div>I would like to have the capability to test changes to applications both in XDG Systems and not XDG Systems.<br><br></div>What would you recommend?</div>

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