That's why I indicated that using a directory relative would make it easier to diagnose/implement.

If both of your custom JSON modules declare 

package JSON;

[download]
You should, as toolic initially asserted, be able to use 
use lib '/abc/xyz';

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or 
use lib ('/abc/xyz');

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then 
use JSON;
use Test::JSON

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because as I noted earlier; the double-colon is a path/directory separator. Meaning; Test::JSON == Test/JSON.

You might also try 

use lib '/abc/xyz/';

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as that negates the need to preface a slash before your custom modules.

In any case; you must ensure that the path to your custom JSON modules preceeds (is before) your system Perl module path.
That's why you see reference to conflicts within the system's perl, in the latest error you quoted.

--Chris

¡λɐp ʇɑəɹ⅁ ɐ əʌɐɥ puɐ ʻꜱdləɥ ꜱᴉɥʇ ədoH

In reply to Re^3: Can't locate Test/JSON.pm in @INC by taint
in thread Can't locate Test/JSON.pm in @INC by zuverlassig

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