The compiler's about to stay in the same place (6)
I believe the answer is:
ibidem
'in the same place' is the definition.
('ibidem' can be a synonym of 'in the same place')
'the compiler's about to stay' is the wordplay.
'the compiler's' becomes 'im' (I've seen this in other clues).
'about' means one lot of letters goes inside another.
'to stay' becomes 'bide' (biding is a kind of staying).
'im' placed around 'bide' is 'IBIDEM'.
(Other definitions for ibidem that I've seen before include "In the same source (Latin)" , "In the same place, used in referencing" , "Dim I be! (anag)" , "Abbreviation meaning in same book or passage" , "In the same place (in references)" .)