:set -isrc
:l src/Lets.hs
:set prompt ">> "
:set -Wall
:set -fno-warn-unused-binds
:set -fno-warn-unused-do-bind
:set -fno-warn-unused-imports
:set -fno-warn-type-defaults
:set -XScopedTypeVariables
:set -XOverloadedStrings