Added FAQ about fixing HLint parse error.
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@ -46,6 +46,7 @@
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- [[#ghc-mod-doesnt-work][=ghc-mod= doesn't work]]
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- [[#indentation-doesnt-reset-when-pressing-return-after-an-empty-line][Indentation doesn't reset when pressing return after an empty line]]
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- [[#flycheck-displays-hlint-warnings-but-not-errors][Flycheck displays HLint warnings but not errors]]
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- [[#hlint-fails-with-parse-error][HLint fails with parse error]]
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- [[#i-can-see-highlighted-errors-but-they-dont-appear-in-the-error-list][I can see highlighted errors but they don't appear in the error list]]
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- [[#flycheck-doesnt-work][Flycheck doesn't work]]
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- [[#flycheck-doesnt-work-with-stack][Flycheck doesn't work with =stack=]]
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@ -397,10 +398,12 @@ Flycheck has different Haskell checkers: =haskell-ghc=, =haskell-stack-ghc= and
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if it doesn't work, then you can change it with ~SPC e s~.
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** HLint
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HLint is a linter for Haskell. It doesn't detect errors (as long as it can parse
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[[https://github.com/ndmitchell/hlint][HLint]] is a linter for Haskell. It doesn't detect errors (as long as it can parse
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the file) but bad coding style and code smell. The HLint checker is called
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*after* the flycheck GHC checker.
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HLint can be configured via .hlint.yaml.
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** ghc-mod
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Ghc-mod, when enabled, also does syntax checking. It doesn't highlight errors,
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but instead displays an exclamation point in the fringe. You can navigate
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@ -511,6 +514,11 @@ following snippet into your =dotspacemacs/user-config= function.
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The HLint checker is called *after* the normal flycheck checker, even if the
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checker fails. Check the [[#flycheck-doesnt-work][Flycheck doesn't work]] section.
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** HLint fails with parse error
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If HLint is not correctly configured (e.g. does not load some extensions that you are using in your project) it might fail while parsing the file.
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Check [[https://github.com/ndmitchell/hlint][HLint]] docs for more details.
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** I can see highlighted errors but they don't appear in the error list
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The error list is only set by flycheck. You are probably seeing errors
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highlighted by either ghc-mode or haskell-mode. Check the [[#flycheck-doesnt-work][Flycheck doesn't work]]
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