nixos-configuration/shared/home-manager/development/helix.nix

{
  pkgs,
  lib,
  theme,
  ...
}:

{
  catppuccin.helix = {
    enable = true;
    flavor = theme.flavor;
  };

  programs = {
    fish.shellAliases.edit = "hx";
    helix = {
      enable = true;
      defaultEditor = true;
      extraPackages = with pkgs; [
        # Markdown
        marksman
        markdown-oxide
        # Html, css, Json, Eslint
        vscode-langservers-extracted
        # Yaml
        ansible-language-server
        yaml-language-server
      ];
      settings = {
        editor = {
          auto-save = {
            after-delay.enable = true;
            focus-lost = true;
          };
          cursor-shape = {
            normal = "block";
            insert = "bar";
            select = "underline";
          };
          lsp = {
            display-inlay-hints = true;
            display-messages = true;
          };
        };
        keys.normal = {
          C-f = ":format";
        };
      };

      languages.language = [
        {
          name = "css";
          formatter = {
            command = "prettier";
            args = [
              "--stdin-filepath"
              "file.css"
            ];
          };
          auto-format = true;
        }
        {
          name = "json";
          language-servers = [
            {
              name = "vscode-json-language-server";
              except-features = [ "format" ];
            }
          ];
          formatter = {
            command = "prettier";
            args = [
              "--stdin-filepath"
              "file.json"
            ];
          };
          auto-format = true;
        }
        {
          name = "jsonc";
          language-servers = [
            {
              name = "vscode-json-language-server";
              except-features = [ "format" ];
            }
          ];
          formatter = {
            command = "prettier";
            args = [
              "--stdin-filepath"
              "file.jsonc"
            ];
          };
          file-types = [
            "jsonc"
          ];
          auto-format = true;
        }
        {
          name = "markdown";
          formatter = {
            command = "prettier";
            args = [
              "--stdin-filepath"
              "file.md"
            ];
          };
          auto-format = true;
        }
        {
          name = "nix";
          formatter.command = lib.getExe pkgs.nixfmt-rfc-style;
          auto-format = true;
        }
        {
          name = "yaml";
          formatter = {
            command = "prettier";
            args = [
              "--stdin-filepath"
              "file.yaml"
            ];
          };
          auto-format = true;
        }
      ];

    };
  };
}