Hi, There is no version 1.8.0 for curl on Hackage: https://hackage.haskell.org/package/curl If you want to use version 1.3.8 (the latest one), add an extra dep into "stack.yaml": extra-deps: - curl-1.3.8 You also have to add a dependency on "curl" into "package.yaml" (if you use hpack) or "yourpackage.cabal" (if you don't). Cheers, Sylvain On 31/03/2019 14:55, Noel Kwan wrote:

I am trying to use stack to build a web scraper with scalpel. However, it requires curl-1.8.0 as a dependency and I have no clue how to integrate this dependency. Any insight would be greatly appreciated.

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