Use nix-community/rnix-lsp. The nix-eval-lsp repo is merely a proof-of-concept.
This README has been shortened to encourage readers to use nix-lsp.
Its previous contents, including a gif and usage instructions, are available in git history.
nix-eval-lsp is an proof-of-concept language server for Nix that provides completions and tooltips by evaluating Nix expressions as they are typed. This allows for several features:
- hover over an expression to see its value
- auto-complete inside expressions such as
with pkgs; [ <typing here> ] - goto definitions across files
The evaluator is developed for the purpose of debugging only. It does not aim to correctly implement Nix in its entirety.
Huge thank you to @jd91mZM2 for nix-community/rnix-parser and nix-community/rnix-lsp.