Latest stack resolver

latest stack resolver can be fond here: Stackage

can be set in the stack.yaml as shown below after resolver:

# This file was automatically generated by 'stack init'
#
# ...
resolver: https://raw.githubusercontent.com/commercialhaskell/stackage-snapshots/master/lts/22/15.yaml

# ...
packages:
- .
# ...
# extra-deps: []

# ...
# flags: {}

# ...
# extra-package-dbs: []

# ...
# compiler-check: newer-minor