Hadn't a production in the pipeline (2,4)
I believe the answer is:
at hand
'in the pipeline' is the definition.
I can't tell whether this definition defines the answer.
'hadn't a production' is the wordplay.
'production' indicates an anagram.
'hadnt'+'a'='hadnta'
'hadnta' is an anagram of 'AT HAND'.
Can you help me to learn more?
(Other definitions for at hand that I've seen before include "conveniently close" , "Readily accessible" , "present" , "Conveniently placed" , "Within easy reach" .)