Interest in Haskell has been slowly, but steadily increasing in the last couple of years. I think that the community would greatly benefit from having a Pragmatic title due to their consistent high quality.
I found Real World Haskell to be disappointing after the 4th chapter.
What would you like to see in a Haskell book?
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There are some good books around, but (for various reasons) I think they all lack something about the “spirit” of FP, eg too much technical detail and not enough context. They are more about “programming in X” rather than “programming with X”. There is an important difference.
It would be great to get a book or some articles written in the ‘Pragmatic’ style, but that may need help from the potential audience!