"Compile? It's easy!" (He's looking for an argument) (10)

I believe the answer is:

polemicist

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'he's looking for an argument' is the definition.
The definition suggests a singular noun which matches the answer.

'compile? it's easy' is the wordplay.
'easy' is an anagram indicator (a loosened or easy version of the letters).
'compile'+'its'='compileits'
'compileits' is an anagram of 'POLEMICIST'.

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I've seen this clue in The Independent.

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