Flymake temp files break build

[codygman]

Duplicate modules are an error in Haskell. Flymake creates a *_flymake.hs file that is an exact copy. Creation of this file in the same directory results in a compilation error.

Please provide a configuration option to write *_flymake files somewhere else so builds are not broken.

[illusori]

flymake-run-in-place already provides this. Set it to nil and the files will be created in temporary-file-directory. It isn't the default because many projects rely on relative directories.