Detect duplicate code

[marcosh]

Is there any tool in the Haskell ecosystem to detect duplicate code?

Would be nice to have one use using HIE AST, which could be agnostic of formatting and variable naming

[jaror]

I know of Research paper: Plagiarism Detection for Haskell with Holmes. As far as I know the implementation is not publicly available, but you can try mailing Jurriaan Hage.

[vmchale]

hlint has a warning for such things!