Wireless Printing. Why do some distros..

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http://chakra-project.org – Trying to get HP 3050 wireless printing running and failing. How come some distros pick up wireless printing straight away and others don't?  As an example; with HPLIP installed,  Mint picks up the HP 3050 wired and wireless straight away. Chakra picks it up wired but not wireless and Sabayon can't even manage to pick either up ootb or with hplip. (HowTos)