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 = "44496fb3e706c795e87d475d674708919a01cbea";
        hash = "sha256-tSDIGbTD+5fm1Qo3922DGJ1YIRNAUJF2btWf4kWbCoM=";
      };
    })
  ];

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

nvim-treesitter must be installed. jq, and 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: update rev and hash
  • fetchFromGithub: preserve rev, update hash
  • sha256 attribute support
  • version tag interpretation/support
• fetchFromGitLab support
• fetchurl support
• fetchzip support