feat: add lazy loading to nvim

modules/programs/nvim/plugins/lsp.nix

@@ -0,0 +1,68 @@
+{ config, lib, pkgs, inputs, ... }:
+
+let
+  inherit (lib) mkEnableOption mkIf readFile;
+in
+{
+  home-manager.users.moritz.programs.nixvim = {
+    extraPlugins = with pkgs.vimPlugins; [
+      elixir-tools-nvim
+    ];
+
+    extraConfigLuaPost = ''
+      local elixir = require("elixir")
+      local elixirls = require("elixir.elixirls")
+
+      elixir.setup {
+        nextls = {
+          enable = true,
+          cmd = vim.fn.exepath("nextls"),
+        },
+        elixirls = {
+          enable = true,
+          cmd = vim.fn.exepath("elixir-ls"),
+          settings = elixirls.settings {
+            dialyzerEnabled = true,
+            enableTestLenses = true,
+          },
+          on_attach = function(client, bufnr)
+            vim.keymap.set("n", "<localleader>fp", ":ElixirFromPipe<cr>", { buffer = true, noremap = true })
+            vim.keymap.set("n", "<localleader>tp", ":ElixirToPipe<cr>", { buffer = true, noremap = true })
+            vim.keymap.set("v", "<localleader>em", ":ElixirExpandMacro<cr>", { buffer = true, noremap = true })
+          end,
+        },
+      }
+    '';
+
+    plugins.lsp = {
+      enable = true;
+      inlayHints = true;
+      servers.rust_analyzer = {
+        enable = true;
+        installRustc = false;
+        installCargo = false;
+        settings.files.watcher = "server";
+      };
+      servers.lexical.enable = true;
+      servers.lua_ls.enable = true;
+      servers.nil_ls.enable = true;
+      servers.nixd.enable = true;
+      servers.nixd.extraOptions.settings.nixd = {
+        nixpkgs = {
+          expr = "import <nixpkgs> { }";
+        };
+        options = {
+          nixos = {
+            expr = ''builtins.head (builtins.attrValues ((builtins.getFlake ("git+file://" + toString ./.)).nixosConfigurations).options'';
+          };
+          "flake-parts" = {
+            expr = ''(builtins.getFlake ("git+file://" + toString ./.)).debug.options'';
+          };
+          "flake-parts2" = {
+            expr = ''(builtins.getFlake ("git+file://" + toString ./.)).currentSystem.options'';
+          };
+        };
+      };
+    };
+  };
+}