- Break long expressions before operators or keywords.
- Break long type signatures between arguments.
- Use a blank line between pragma and module statements.
- Order imports in three sections, separating each by a blank line: standard libraries, third-party libraries, application modules. Within each section, alphabetize the imports and place qualified imports last.
- Order pragma statements alphabetically.
- Use comma-first style exports, records, and lists.
- Use four-space indentation except the
where
keyword which is indented two spaces. Example. - Use only one pragma statement per line.