Himalayan native (6)
'himalayan native' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for nepali that I've seen before include "one found in mountainous region" , "Language of Kathmandu" , "Foreigner" , "Asian national" , "Native of a mountainous Hindu kingdom" .)
(Other definitions for sherpa that I've seen before include "Experienced climber" , "Native Himalayan mountain climber" , "Phrase for Himalayan mountain climber" , "Himalayan - phrase (anag)" , "Skilled Himalayan mountaineer" .)