Remove 'vanilla' from default ghcup channels #136
Description
@andreasabel I think the second commit here might be an unintended change, the "vanilla" channel is the bindists "as released by GHC upstream", which is a change from the default, which provides curated bindists. In particular on the cabal repo this meant a 9.0.2 bindist without profiling libraries was downloaded by CI and caused a test to fail.
Originally posted by @mpickering in #132 (comment)