Hi, The readline library sets libraries@haskell.org as maintainer, so trying to find if anyone is maintaining it in this list. http://hackage.haskell.org/package/readline-1.0.3.0 The library doesn't build properly with Cabal 3, though its cabal file doesn't limit it to Cabal 2. That makes it fail to build in the latest nix packages release. You can see the details in this pull request: https://github.com/NixOS/nixpkgs/pull/111985. This patch seems to be enough to make the library compile again, but I haven't found anywhere to submit it to fix the library code itself. At the moment the patch lives in the nixpkgs repository: https://github.com/samuelrivas/nixpkgs/blob/30eec30626bd7b8c592dab572e744436... Is there any upstream copy of the readline library where I can pull request this patch? Thanks! -- Samuel