First release candidate for Stack 4.1.1

You can download binaries for this pre-release now from Release rc/v4.1.0.1 (release candidate) · commercialhaskell/stack · GitHub . Soon, it should be available also via GHCup’s prereleases channel. Please test it and let us know at the Stack repository if you run into any trouble. We are allowing a much longer period than usual before releasing a final version. This is to increase the opportunity for people interested in Stack’s support for GHC’s Backpack module system for cross-package use...