add TODO

flake.lock

@@ -843,6 +843,38 @@
         "type": "github"
       }
     },
+    "plugin-lz-n": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1719989949,
+        "narHash": "sha256-oHwmlLgdJJDz5+gs1KLAa2MHQAadM/JYmHGfep9yl28=",
+        "owner": "nvim-neorocks",
+        "repo": "lz.n",
+        "rev": "4c790ba2c3789f580aa019712bbe3112f85e73a0",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nvim-neorocks",
+        "repo": "lz.n",
+        "type": "github"
+      }
+    },
+    "plugin-lzn-auto-require": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1722727896,
+        "narHash": "sha256-h7Dx3zBkUYamQY6lcuQrwAMgBpPqskLnA6WsbefHzMU=",
+        "owner": "horriblename",
+        "repo": "lzn-auto-require",
+        "rev": "c6b47e148a1ff9709e802f68c2c8b558a9a8de9b",
+        "type": "github"
+      },
+      "original": {
+        "owner": "horriblename",
+        "repo": "lzn-auto-require",
+        "type": "github"
+      }
+    },
     "plugin-mind-nvim": {
       "flake": false,
       "locked": {
@@ -1872,6 +1904,8 @@
         "plugin-lspkind": "plugin-lspkind",
         "plugin-lspsaga": "plugin-lspsaga",
         "plugin-lualine": "plugin-lualine",
+        "plugin-lz-n": "plugin-lz-n",
+        "plugin-lzn-auto-require": "plugin-lzn-auto-require",
         "plugin-mind-nvim": "plugin-mind-nvim",
         "plugin-minimap-vim": "plugin-minimap-vim",
         "plugin-modes-nvim": "plugin-modes-nvim",

flake.nix

@@ -102,6 +102,17 @@
     };
 
     ## Plugins
+    # Lazy loading
+    plugin-lz-n = {
+      url = "github:nvim-neorocks/lz.n";
+      flake = false;
+    };
+
+    plugin-lzn-auto-require = {
+      url = "github:horriblename/lzn-auto-require";
+      flake = false;
+    };
+
     # LSP plugins
     plugin-nvim-lspconfig = {
       url = "github:neovim/nvim-lspconfig";

lib/binds.nix

@@ -3,6 +3,7 @@
   inherit (lib.modules) mkIf mkDefault;
   inherit (lib.types) nullOr str;
   inherit (lib.attrsets) isAttrs mapAttrs;
+  inherit (lib.generators) mkLuaInline;
 
   binds = rec {
     mkLuaBinding = key: action: desc:
@@ -67,6 +68,22 @@
       mkLuaBinding binding.value action binding.description;
 
     pushDownDefault = attr: mapAttrs (_: mkDefault) attr;
+
+    mkLznBinding = mode: lhs: rhs: desc: {
+      inherit mode lhs rhs desc;
+    };
+
+    mkSetLznBinding = binding: action: {
+      lhs = binding.value;
+      rhs = action;
+      desc = binding.description;
+    };
+
+    mkSetLuaLznBinding = binding: action: {
+      lhs = binding.value;
+      rhs = mkLuaInline "function() ${action} end";
+      desc = binding.description;
+    };
   };
 in
   binds

lib/types/default.nix

@@ -9,7 +9,7 @@
   typesCustom = import ./custom.nix {inherit lib;};
 in {
   inherit (typesDag) dagOf;
-  inherit (typesPlugin) pluginsOpt extraPluginType mkPluginSetupOption luaInline pluginType;
+  inherit (typesPlugin) pluginsOpt extraPluginType mkPluginSetupOption luaInline pluginType lznPluginType lznPluginTableType;
   inherit (typesLanguage) diagnostics mkGrammarOption;
   inherit (typesCustom) anythingConcatLists char;
 }

lib/types/plugins.nix

@@ -6,8 +6,7 @@
   inherit (lib.options) mkOption;
   inherit (lib.attrsets) attrNames mapAttrs' filterAttrs nameValuePair;
   inherit (lib.strings) hasPrefix removePrefix;
-  inherit (lib.types) submodule either package enum str lines attrsOf anything listOf nullOr;
+  inherit (lib.types) submodule either package enum str lines attrsOf anything listOf nullOr oneOf bool;
-
   # Get the names of all flake inputs that start with the given prefix.
   fromInputs = {
     inputs,
@@ -51,8 +50,156 @@
       };
     };
   };
+
+  luaInline = lib.mkOptionType {
+    name = "luaInline";
+    check = x: lib.nvim.lua.isLuaInline x;
+  };
+
+  lznKeysSpec = submodule {
+    options = {
+      desc = mkOption {
+        description = "Description of the key map";
+        type = nullOr str;
+        default = null;
+      };
+
+      noremap = mkOption {
+        description = "TBD";
+        type = bool;
+        default = false;
+      };
+
+      expr = mkOption {
+        description = "TBD";
+        type = bool;
+        default = false;
+      };
+
+      nowait = mkOption {
+        description = "TBD";
+        type = bool;
+        default = false;
+      };
+
+      ft = mkOption {
+        description = "TBD";
+        type = nullOr (listOf str);
+        default = null;
+      };
+
+      lhs = mkOption {
+        type = str;
+        description = "Key to bind to";
+      };
+
+      rhs = mkOption {
+        type = nullOr (either str luaInline);
+        default = null;
+        # FIXME: use a separate flag to indicate lua instead of luaInline
+        description = "Action to trigger. luaInline code will be wrapped in a function.";
+      };
+
+      mode = mkOption {
+        description = "Modes to bind in";
+        type = listOf str;
+        default = ["n" "x" "s" "o"];
+      };
+    };
+  };
+
+  lznPluginTableType = attrsOf lznPluginType;
+  lznPluginType = submodule {
+    options = {
+      ## Should probably infer from the actual plugin somehow
+      ## In general this is the name passed to packadd, so the dir name of the plugin
+      # name = mkOption {
+      #   type=  str;
+      # }
+
+      # Non-lz.n options
+
+      package = mkOption {
+        type = pluginType;
+        description = "Plugin package";
+      };
+
+      setupModule = mkOption {
+        type = nullOr str;
+        description = "Lua module to run setup function on.";
+        default = null;
+      };
+
+      setupOpts = mkOption {
+        type = submodule {freeformType = attrsOf anything;};
+        description = "Options to pass to the setup function";
+        default = {};
+      };
+
+      # lz.n options
+
+      before = mkOption {
+        type = nullOr str;
+        description = "Lua code to run before plugin is loaded. This will be wrapped in a function.";
+        default = null;
+      };
+
+      after = mkOption {
+        type = nullOr str;
+        description = "Lua code to run after plugin is loaded. This will be wrapped in a function.";
+        default = null;
+      };
+
+      event = mkOption {
+        description = "Lazy-load on event";
+        default = null;
+        type = let
+          event = submodule {
+            options = {
+              event = mkOption {
+                type = nullOr (either str (listOf str));
+                description = "Exact event name";
+                example = "BufEnter";
+              };
+              pattern = mkOption {
+                type = nullOr (either str (listOf str));
+                description = "Event pattern";
+                example = "BufEnter *.lua";
+              };
+            };
+          };
+        in
+          nullOr (oneOf [str (listOf str) event]);
+      };
+
+      cmd = mkOption {
+        description = "Lazy-load on command";
+        default = null;
+        type = nullOr (either str (listOf str));
+      };
+
+      ft = mkOption {
+        description = "Lazy-load on filetype";
+        default = null;
+        type = nullOr (either str (listOf str));
+      };
+
+      keys = mkOption {
+        description = "Lazy-load on key mapping";
+        default = null;
+        type = nullOr (oneOf [str (listOf lznKeysSpec) (listOf str)]);
+        example = ''
+          keys = [
+            {lhs = "<leader>s"; rhs = ":NvimTreeToggle<cr>"; desc = "Toggle NvimTree"}
+          ]
+        '';
+      };
+
+      # TODO: enabled, beforeAll, colorscheme, priority, load
+    };
+  };
 in {
-  inherit extraPluginType fromInputs pluginType;
+  inherit extraPluginType fromInputs pluginType luaInline lznPluginType lznPluginTableType;
 
   pluginsOpt = {
     description,
@@ -64,11 +211,6 @@ in {
       type = pluginsType;
     };
 
-  luaInline = lib.mkOptionType {
-    name = "luaInline";
-    check = x: lib.nvim.lua.isLuaInline x;
-  };
-
   /*
   opts is a attrset of options, example:
   ```

modules/default.nix

@@ -69,10 +69,7 @@ inputs: {
 
   # built (or "normalized") plugins that are modified
   builtStartPlugins = buildConfigPlugins vimOptions.startPlugins;
-  builtOptPlugins = map (package: {
+  builtOptPlugins = map (package: package // {optional = true;}) (buildConfigPlugins vimOptions.optPlugins);
-    plugin = package;
-    optional = true;
-  }) (buildConfigPlugins vimOptions.optPlugins);
 
   # additional Lua and Python3 packages, mapped to their respective functions
   # to conform to the format mnw expects. end user should

modules/modules.nix

@@ -50,6 +50,7 @@
   wrapper = map (p: ./wrapper + "/${p}") [
     "build"
     "rc"
+    "lazy"
     "warnings"
   ];
 

modules/plugins/filetree/nvimtree/config.nix

@@ -4,11 +4,11 @@
   pkgs,
   ...
 }: let
+  inherit (builtins) filter;
   inherit (lib.strings) optionalString;
-  inherit (lib.modules) mkIf mkMerge;
+  inherit (lib.modules) mkIf;
-  inherit (lib.nvim.binds) mkBinding;
+  inherit (lib.nvim.binds) mkLznBinding;
   inherit (lib.nvim.dag) entryAnywhere;
-  inherit (lib.nvim.lua) toLuaObject;
   inherit (lib.nvim.binds) pushDownDefault;
 
   cfg = config.vim.filetree.nvimTree;
@@ -16,19 +16,28 @@
   inherit (self.options.vim.filetree.nvimTree) mappings;
 in {
   config = mkIf cfg.enable {
-    vim.startPlugins = ["nvim-tree-lua"];
-
-    vim.maps.normal = mkMerge [
-      (mkBinding cfg.mappings.toggle ":NvimTreeToggle<cr>" mappings.toggle.description)
-      (mkBinding cfg.mappings.refresh ":NvimTreeRefresh<cr>" mappings.refresh.description)
-      (mkBinding cfg.mappings.findFile ":NvimTreeFindFile<cr>" mappings.findFile.description)
-      (mkBinding cfg.mappings.focus ":NvimTreeFocus<cr>" mappings.focus.description)
-    ];
-
     vim.binds.whichKey.register = pushDownDefault {
       "<leader>t" = "+NvimTree";
     };
 
+    vim.lazy = {
+      plugins = {
+        nvim-tree-lua = {
+          package = "nvim-tree-lua";
+          setupModule = "nvim-tree";
+          inherit (cfg) setupOpts;
+          cmd = ["NvimTreeClipboard" "NvimTreeClose" "NvimTreeCollapse" "NvimTreeCollapseKeepBuffers" "NvimTreeFindFile" "NvimTreeFindFileToggle" "NvimTreeFocus" "NvimTreeHiTest" "NvimTreeOpen" "NvimTreeRefresh" "NvimTreeResize" "NvimTreeToggle"];
+
+          keys = filter ({lhs, ...}: lhs != null) [
+            (mkLznBinding ["n"] cfg.mappings.toggle ":NvimTreeToggle<cr>" mappings.toggle.description)
+            (mkLznBinding ["n"] cfg.mappings.refresh ":NvimTreeRefresh<cr>" mappings.refresh.description)
+            (mkLznBinding ["n"] cfg.mappings.findFile ":NvimTreeFindFile<cr>" mappings.findFile.description)
+            (mkLznBinding ["n"] cfg.mappings.focus ":NvimTreeFocus<cr>" mappings.focus.description)
+          ];
+        };
+      };
+    };
+
     vim.pluginRC.nvimtreelua = entryAnywhere ''
       ${
         optionalString cfg.setupOpts.disable_netrw ''
@@ -38,10 +47,9 @@ in {
         ''
       }
 
-      require'nvim-tree'.setup(${toLuaObject cfg.setupOpts})
-
       ${
         optionalString cfg.openOnSetup ''
+          require('lz.n').trigger_load("nvim-tree-lua")
           -- autostart behaviour
           -- Open on startup has been deprecated
           -- see https://github.com/nvim-tree/nvim-tree.lua/wiki/Open-At-Startup

modules/wrapper/lazy/config.nix

@@ -0,0 +1,74 @@
+{
+  lib,
+  config,
+  ...
+}: let
+  inherit (builtins) toJSON typeOf head length;
+  inherit (lib.modules) mkIf;
+  inherit (lib.attrsets) mapAttrsToList;
+  inherit (lib.generators) mkLuaInline;
+  inherit (lib.strings) optionalString;
+  inherit (lib.nvim.lua) toLuaObject;
+  inherit (lib.nvim.dag) entryBefore;
+  cfg = config.vim.lazy;
+
+  toLuzLznKeySpec = {
+    desc,
+    noremap,
+    expr,
+    nowait,
+    ft,
+    lhs,
+    rhs,
+    mode,
+  }: {
+    "@1" = lhs;
+    "@2" = rhs;
+    inherit desc noremap expr nowait ft mode;
+  };
+
+  toLuaLznSpec = name: spec:
+    (removeAttrs spec ["package" "setupModule" "setupOpts" "keys"])
+    // {
+      "@1" = name;
+      before =
+        if spec.before != null
+        then
+          mkLuaInline ''
+            function()
+              ${spec.before}
+            end
+          ''
+        else null;
+
+      after =
+        if spec.setupModule == null && spec.after == null
+        then null
+        else
+          mkLuaInline ''
+            function()
+              ${
+              optionalString (spec.setupModule != null)
+              "require(${toJSON spec.setupModule}).setup(${toLuaObject spec.setupOpts})"
+            }
+              ${optionalString (spec.after != null) spec.after}
+            end
+          '';
+
+      keys =
+        if typeOf spec.keys == "list" && length spec.keys > 0 && typeOf (head spec.keys) == "set"
+        then map toLuzLznKeySpec spec.keys
+        else spec.keys;
+    };
+  lznSpecs = mapAttrsToList toLuaLznSpec cfg.plugins;
+in {
+  config.vim = mkIf cfg.enable {
+    startPlugins = ["lz-n" "lzn-auto-require"];
+
+    optPlugins = mapAttrsToList (_: plugin: plugin.package) cfg.plugins;
+
+    luaConfigRC.lzn-load = entryBefore ["pluginConfigs"] ''
+      require('lz.n').load(${toLuaObject lznSpecs})
+    '';
+  };
+}

modules/wrapper/lazy/default.nix

@@ -0,0 +1,6 @@
+_: {
+  imports = [
+    ./lazy.nix
+    ./config.nix
+  ];
+}

modules/wrapper/lazy/lazy.nix

@@ -0,0 +1,29 @@
+{lib, ...}: let
+  inherit (lib.options) mkOption mkEnableOption;
+  inherit (lib.types) enum;
+  inherit (lib.nvim.types) lznPluginTableType;
+in {
+  options.vim.lazy = {
+    enable = mkEnableOption "plugin lazy-loading" // {default = true;};
+    loader = mkOption {
+      description = "Lazy loader to use";
+      type = enum ["lz.n"];
+      default = "lz.n";
+    };
+
+    plugins = mkOption {
+      default = {};
+      type = lznPluginTableType;
+      description = "list of plugins to lazy load";
+      example = ''
+        {
+          toggleterm-nvim = {
+            package = "toggleterm-nvim";
+            after = lib.generators.mkLuaInline "function() require('toggleterm').setup{} end";
+            cmd = ["ToggleTerm"];
+          };
+        }
+      '';
+    };
+  };
+}

modules/wrapper/rc/config.nix

@@ -5,7 +5,7 @@
 }: let
   inherit (builtins) map mapAttrs filter removeAttrs attrNames;
   inherit (lib.attrsets) mapAttrsToList filterAttrs attrsToList;
-  inherit (lib.strings) concatLines concatMapStringsSep;
+  inherit (lib.strings) concatLines concatMapStringsSep optionalString;
   inherit (lib.trivial) showWarnings;
   inherit (lib.generators) mkLuaInline;
   inherit (lib.nvim.dag) entryAfter mkLuarcSection resolveDag entryAnywhere;
@@ -82,6 +82,8 @@ in {
         pluginConfigs = entryAfter ["theme"] pluginConfigs;
         extraPluginConfigs = entryAfter ["pluginConfigs"] extraPluginConfigs;
         mappings = entryAfter ["extraPluginConfigs"] keymaps;
+        # FIXME: put this somewhere less stupid
+        footer = entryAfter ["mappings"] (optionalString config.vim.lazy.enable "require('lzn-auto-require.loader').register_loader()");
       };
 
       builtLuaConfigRC = let