draft: initial implementation

.gitignore

@@ -1,3 +1,4 @@
 result
 .pre-commit-config.yaml
 .direnv
+.luarc.json

flake.nix

@@ -10,14 +10,9 @@
       url = "github:cachix/pre-commit-hooks.nix";
     };
 
-    neorocks = {
-      url = "github:nvim-neorocks/neorocks";
-    };
+    neorocks.url = "github:nvim-neorocks/neorocks";
 
-    neodev-nvim = {
-      url = "github:folke/neodev.nvim";
-      flake = false;
-    };
+    gen-luarc.url = "github:mrcjkb/nix-gen-luarc-json";
   };
 
   outputs = inputs @ {
@@ -26,7 +21,7 @@
     flake-parts,
     pre-commit-hooks,
     neorocks,
-    neodev-nvim,
+    gen-luarc,
     ...
   }: let
     name = "lz.n";
@@ -49,77 +44,33 @@
         ...
       }: let
         ci-overlay = import ./nix/ci-overlay.nix {
-          inherit
-            self
-            neodev-nvim
-            ;
+          inherit self;
           plugin-name = name;
         };
 
         pkgs = import nixpkgs {
           inherit system;
           overlays = [
-            ci-overlay
+            gen-luarc.overlays.default
             neorocks.overlays.default
+            ci-overlay
             plugin-overlay
           ];
         };
 
-        mkTypeCheck = {
-          nvim-api ? [],
-          disabled-diagnostics ? [],
-        }:
-          pre-commit-hooks.lib.${system}.run {
-            src = self;
-            hooks = {
-              lua-ls.enable = true;
-            };
-            settings = {
-              lua-ls = {
-                config = {
-                  runtime.version = "LuaJIT";
-                  Lua = {
-                    workspace = {
-                      library =
-                        nvim-api
-                        ++ [
-                          "\${3rd}/busted/library"
-                          "\${3rd}/luassert/library"
-                        ];
-                      ignoreDir = [
-                        ".git"
-                        ".github"
-                        ".direnv"
-                        "result"
-                        "nix"
-                        "doc"
-                      ];
-                    };
-                    diagnostics = {
-                      libraryFiles = "Disable";
-                      disable = disabled-diagnostics;
-                    };
-                  };
-                };
-              };
-            };
-          };
-
-        type-check-stable = mkTypeCheck {
-          nvim-api = [
-            "${pkgs.neovim}/share/nvim/runtime/lua"
-            "${pkgs.neodev-plugin}/types/stable"
-          ];
-          disabled-diagnostics = [
-            # For compatibility with nightly, some diagnostics may have to be disabled here.
-          ];
+        luarc = pkgs.mk-luarc {
+          nvim = pkgs.neovim-nightly;
+          neodev-types = "nightly";
         };
 
-        type-check-nightly = mkTypeCheck {
-          nvim-api = [
-            "${pkgs.neovim-nightly}/share/nvim/runtime/lua"
-            "${pkgs.neodev-plugin}/types/nightly"
-          ];
+        type-check-nightly = pre-commit-hooks.lib.${system}.run {
+          src = self;
+          hooks = {
+            lua-ls.enable = true;
+          };
+          settings = {
+            lua-ls.config = luarc;
+          };
         };
 
         pre-commit-check = pre-commit-hooks.lib.${system}.run {
@@ -135,7 +86,10 @@
 
         devShell = pkgs.nvim-nightly-tests.overrideAttrs (oa: {
           name = "lz.n devShell";
-          inherit (pre-commit-check) shellHook;
+          shellHook = ''
+            ${pre-commit-check.shellHook}
+            ln -fs ${pkgs.luarc-to-json luarc} .luarc.json
+          '';
           buildInputs = with pre-commit-hooks.packages.${system};
             [
               alejandra
@@ -162,7 +116,6 @@
         checks = {
           inherit
             pre-commit-check
-            type-check-stable
             type-check-nightly
             ;
           inherit

lua/lz/n/handler/cmd.lua

@@ -0,0 +1,75 @@
+local loader = require('lz.n.loader')
+
+---@class LzCmdHandler: LzHandler
+local M = {
+  ---@type table<string, LzPlugin>
+  active = {},
+  managed = {},
+  type = 'cmd',
+}
+
+---@param cmd string
+local function load(cmd)
+  vim.api.nvim_del_user_command(cmd)
+  loader.load(M.active[cmd])
+end
+
+---@param cmd string
+function M.add(cmd)
+  vim.api.nvim_create_user_command(cmd, function(event)
+    ---@cast event vim.api.keyset.user_command
+    local command = {
+      cmd = cmd,
+      bang = event.bang or nil,
+      ---@diagnostic disable-next-line: undefined-field
+      mods = event.smods,
+      ---@diagnostic disable-next-line: undefined-field
+      args = event.fargs,
+      count = event.count >= 0 and event.range == 0 and event.count or nil,
+    }
+
+    if event.range == 1 then
+      ---@diagnostic disable-next-line: undefined-field
+      command.range = { event.line1 }
+    elseif event.range == 2 then
+      ---@diagnostic disable-next-line: undefined-field
+      command.range = { event.line1, event.line2 }
+    end
+
+    ---@type string
+    local plugins = '`' .. table.concat(vim.tbl_values(M.active[cmd]), ', ') .. '`'
+
+    load(cmd)
+
+    local info = vim.api.nvim_get_commands({})[cmd] or vim.api.nvim_buf_get_commands(0, {})[cmd]
+    if not info then
+      vim.schedule(function()
+        vim.notify('Command `' .. cmd .. '` not found after loading ' .. plugins, vim.log.levels.ERROR)
+      end)
+      return
+    end
+
+    command.nargs = info.nargs
+    ---@diagnostic disable-next-line: undefined-field
+    if event.args and event.args ~= '' and info.nargs and info.nargs:find('[1?]') then
+      ---@diagnostic disable-next-line: undefined-field
+      command.args = { event.args }
+    end
+    vim.cmd(command)
+  end, {
+    bang = true,
+    range = true,
+    nargs = '*',
+    complete = function(_, line)
+      load(cmd)
+      return vim.fn.getcompletion(line, 'cmdline')
+    end,
+  })
+end
+
+---@param cmd string
+function M.del(cmd)
+  pcall(vim.api.nvim_del_user_command, cmd)
+end
+
+return M