Things we may want to do below alignment/indentations

[aspiwack]

This is a bit of a hodgepodge issue, lest I forget.

• Splitting the {-# LANGUAGE … #-} pragmas with list of extension into pragmas with a single extension
• Sorting {-# LANGUAGE … #-} pragmas
• Sorting import
  • Sorting import lists?

The rational is that none of these have structure, it's only to minimize diffs. And let tools insert these without fear.

Possibly, but maybe not a good idea, we could also change C => D => t into (C, D) => t. Again, it's for tools (such as Dante) which can insert constraints, but would have a hard time being too precise about layout.

[mrkkrp]

I'm going to close this one because:

• There is another more-specific issue about language pragmas: Implement automatic sorting of language pragmas #20.
• We already sort imports and import lists.
• The change with constraints would lead to altering of AST and I think we'll try to avoid that at least because it makes self-checks problematic (verifying that AST of formatted code is the same as AST of original code).