I guess this is a basic question, but I haven’t found out how to do this.
I want to update the version of a single package - https://github.com/NixOS/nixpkgs/blob/adaf0714abcb368b44f5d17301fddf482753de3e/pkgs/development/beam-modules/elixir-ls/default.nix
my idea was to copy this default.nix locally, add an overlay and be ready. But then I got errors about
fetchMixDeps being a required argument and not being passed in.
So how do I add an overlay for this file only and keep all the default arguments?