Ricardo,

Thanks for pointing that out. I have gone through that. However, none of those options are applicable here. All of those at some point requires root permission. The proot is the only option but it is terribly slow and also several time does not work with dispatching jobs etc (do not have real example but had felt difficulty beyond slow speed).

For now I am managing with Nix but I need something that is portable to older kernel. Unfortunately, at several work places that is the case.

Regards,

Rohit