Vaibhav Sagar 1794232b4c
Test with GHC 9.0 and Stack (#1351)
* Test with GHC 9.0 and Stack
* stack-9.0.yaml: use lts-19.10
* IHaskell.Eval.Util: use `nub` when comparing package flags
2022-06-07 14:38:57 +10:00
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