Haskell language extensions: pragma vs. flag compiler?

Question

To use a language extension, such as UnicodeSyntaxin all project files, 2 options are available:

• Pragma in each source file: {-# LANGUAGE UnicodeSyntax #-}
• Adding a extensions: UnicodeSyntaxfile to each section (library, executable file, test) .cabal.

Are there any reasons or recommendations for choosing one of them?

I use stacktheir standard new-templatefor simple packages.

Answer 1

, . , , . , , , - Template Haskell . - , . , , .

, , Cabal, , .