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Profiling with -Werror and GHC 8.2 is broken #3360
Using Windows 64bit, Stack 1.5, if I create a stack file for the Shake package pointing at
I get the error:
The cause is
I tested this with Shake, but I believe the problem applies to all packages.
Thanks for reporting! Looks like these have been old flags even when it was implemented. From the latest docs
And indeed, the earliest supported ghc, 7.8 has -prof-cafs as well: https://downloads.haskell.org/~ghc/7.8.1/docs/html/users_guide/flag-reference.html
So, no version check is needed.