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servant-server: make file-serving functions polymorphic in the monad by alpmestan · Pull Request #953 · haskell-servant/servant · GitHub
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servant-server: make file-serving functions polymorphic in the monad #953
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phadej
approved these changes
Apr 25, 2018
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Alright, CI passes (except 7.8 of course, but that's not new), so it seems like there is no problem with generalising the monad in the typical use cases. I think it's sane that in the case I mentionned above, one has to add some type annotations to let ghc know what the source monad is. If anyone disagrees, please let your voice be heard! |
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@alpmestan feel free to merge when you are satisfied with "discussion". |
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Alright, let's merge this then =) |
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This simply seems possible without breaking anything, so why not?
I've only tried to build servant-server and the tutorial. Let's see what CI says, but it seems to me like the monad is never going to be ambiguous, unless you have a single handler which does file serving, but you still use another monad and call
hoistServeron your handler, maybe?Thoughts?