feat: add lazy loading to nvim

modules/programs/nvim/plugins/conform.nix

@@ -0,0 +1,74 @@
+{ config, lib, pkgs, inputs, ... }:
+
+let
+  inherit (lib) mkEnableOption mkIf readFile;
+in
+{
+  home-manager.users.moritz.programs.nixvim = {
+    plugins.conform-nvim = {
+      enable = true;
+      settings.formatters_by_ft = {
+        "*" = [ "codespell" "trim_whitespace" ];
+        elixir = [ "mix" ];
+        gleam = [ "gleam" ];
+        go = [ "gofmt" ];
+        json = [ "jq" ];
+        lua = [ "stylua" ];
+        nix = [ "nixpkgs_fmt" ];
+        python.__raw = ''
+          function(bufnr)
+            return { first(bufnr, "ruff_organize_imports", "isort"), first(bufnr, "ruff_format", "black")}
+          end
+        '';
+        rust = [ "rustfmt" ];
+        sh = [ "shfmt" ];
+        tex = [ "latexindent" ];
+        toml = [ "taplo" ];
+        yaml = [ "yamlfix" ];
+        markdown = [ "injected" ];
+      };
+    };
+    opts.formatexpr = "v:lua.require'conform'.formatexpr()";
+    extraConfigLuaPre = ''
+      ---@param bufnr integer
+      ---@param ... string
+      ---@return string
+      local function first(bufnr, ...)
+        local conform = require("conform")
+        for i = 1, select("#", ...) do
+          local formatter = select(i, ...)
+          if conform.get_formatter_info(formatter, bufnr).available then
+            return formatter
+          end
+        end
+        return select(1, ...)
+      end
+
+      vim.api.nvim_create_user_command("Format", function(opts)
+        require("conform").format({ formatters = opts.fargs })
+      end, {
+        nargs = "+",
+        complete = function()
+          local formatters_by_ft = require("conform").formatters_by_ft
+          local names = formatters_by_ft[vim.bo.filetype] or formatters_by_ft["_"] or {}
+          names = vim.list_extend(names, formatters_by_ft["*"] or {})
+          names = vim.tbl_flatten(names)
+          local formatters = vim.tbl_map(require("conform").get_formatter_info, names)
+          formatters = vim.tbl_filter(function(formatter)
+            return formatter.available
+          end, formatters)
+          return vim.tbl_map(function(formatter_info)
+            return formatter_info.name
+          end, formatters)
+        end,
+      })
+    '';
+    performance.combinePlugins.standalonePlugins = [
+      "conform.nvim"
+    ];
+    keymaps = [
+      { key = "="; action.__raw = ''function() require("conform").format() end''; options.desc = "Format current file"; }
+    ];
+  };
+
+}