[rfc] wpa_supplicant: use capabilities in service to run as non-root #53219
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dkwo
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The capabilities are the ones recommended in upstream README. They recommend to set them on the executable, but it seems safer to set them in the service.
Added a patch to the external file function, taken from nixos.
NB: Had to
chown -R _wpas:_wpas /etc/wpa_supplicant, as well as edit the conf to change control group.