nix-prefetch.nvim

This is a story about Pete

Pete loves Nix ❤️

Pete likes to write Nix using Neovim

This is what happens to Pete:

• Pete commits changes his project repo.
• Pete wants to build and test his changes but must update the git revision and hash for Nix first.
• Pete doesn't use Nix well, so he just erases the old hash, and rebuilds, then copies the hash-mismatch error message and pastes it back into his config, then rebuilds again.
• Pete does this alot because he is bad at developing software.

Don't be like Pete, use nix-prefetch.nvim!

Current Support

nix-prefetch.nvim is currently limited to fetchFromGitHub attribute sets using a rev and hash value (See Future Development for planned features). As an example of a supported format, this is the code block to include nix-prefetch.nvim in your Nixvim config:

  extraPlugins = [
    (pkgs.vimUtils.buildVimPlugin {
      name = "nix-prefetch.nvim";
      src = pkgs.fetchFromGitHub {
        owner = "pete3n";
        repo = "nix-prefetch.nvim";
 	rev = "4f32441c3a7f550ccb8cbd73cba8ab11aa32f8d1";
        hash = "sha256-FpUYNdyn3YrbrAWdkyeE7Kl/ThmSKBNl1l2ePjznKRc=";
      };
    })
  ];

This will register the NGUpdateRepo command which you can keybind. If you call NGUpdateRepo with the cursor in a fetchFromGitHub attribute set, then it will check for the most recent revision, and if it is different from the current, updates the revision and the corresponding hash.

Dependencies

• neovim v0.11+
• nvim-treesitter must be installed.
• nix-prefetch-git must be executable and available in your path.

To confirm dependencies are availabe, nix-prefetch includes a health check function that you can run from the nvim commandline with:

    :checkhealth nix_prefetch

Future Development

• fetchFromGitHub
• fetchFromGitLab
• update default branch to latest rev
• update from user specified rev
• update from user specified branch to latest rev
• nix-repl.nvim eval integration