Identify Haskell Version Used in Project?

[Kevin Meredith]

Given a stack.yaml and myproject.cabal, how can I tell the Haskell version that my stack project is using?

In other words, I'm assuming that there's a place to specify which Haskell version to use when building a stack project.

Thanks

[Michael Sloan]

The GHC version is specified by the "resolver" in your config.  Lets say the value is "lts-8.12", then taking a look at this page will give the answer - https://www.stackage.org/lts-8.12 . Assuming that the compiler is installed, this should give you its version:

stack ghc -- --version

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