diff --git a/.luacheckrc b/.luacheckrc
new file mode 100644
index 0000000..777fc95
--- /dev/null
+++ b/.luacheckrc
@@ -0,0 +1,12 @@
+globals = {
+    "vim",
+    "vis",
+    "setup",
+}
+
+files["vis/visrc.lua"] = {
+    ignore = {
+        "211/_plugins",
+        "_setup_plug",
+    },
+}
diff --git a/boot.nix b/boot.nix
index cd4f93c..a100fd3 100644
--- a/boot.nix
+++ b/boot.nix
@@ -1,4 +1,5 @@
-{ ... }: {
+{ ... }:
+{
   # Use the systemd-boot EFI boot loader.
   boot.loader.systemd-boot.enable = true;
   boot.loader.efi.canTouchEfiVariables = true;
diff --git a/host-specific/edge/hardware-configuration.nix b/host-specific/edge/hardware-configuration.nix
index ab444d6..c599367 100644
--- a/host-specific/edge/hardware-configuration.nix
+++ b/host-specific/edge/hardware-configuration.nix
@@ -1,28 +1,42 @@
 # Do not modify this file!  It was generated by ‘nixos-generate-config’
 # and may be overwritten by future invocations.  Please make changes
 # to /etc/nixos/configuration.nix instead.
-{ config, lib, pkgs, modulesPath, ... }:
+{
+  config,
+  lib,
+  pkgs,
+  modulesPath,
+  ...
+}:
 
 {
-  imports =
-    [ (modulesPath + "/installer/scan/not-detected.nix")
-    ];
+  imports = [
+    (modulesPath + "/installer/scan/not-detected.nix")
+  ];
 
-  boot.initrd.availableKernelModules = [ "nvme" "xhci_pci" "ahci" "usbhid" ];
+  boot.initrd.availableKernelModules = [
+    "nvme"
+    "xhci_pci"
+    "ahci"
+    "usbhid"
+  ];
   boot.initrd.kernelModules = [ ];
   boot.kernelModules = [ "kvm-amd" ];
   boot.extraModulePackages = [ ];
 
-  fileSystems."/" =
-    { device = "/dev/disk/by-uuid/8101a0a8-a8c6-4083-85b6-c136d3c80f2e";
-      fsType = "ext4";
-    };
+  fileSystems."/" = {
+    device = "/dev/disk/by-uuid/8101a0a8-a8c6-4083-85b6-c136d3c80f2e";
+    fsType = "ext4";
+  };
 
-  fileSystems."/boot" =
-    { device = "/dev/disk/by-uuid/E7AD-32DA";
-      fsType = "vfat";
-      options = [ "fmask=0077" "dmask=0077" ];
-    };
+  fileSystems."/boot" = {
+    device = "/dev/disk/by-uuid/E7AD-32DA";
+    fsType = "vfat";
+    options = [
+      "fmask=0077"
+      "dmask=0077"
+    ];
+  };
 
   swapDevices = [ ];
 
diff --git a/nvim/init.lua b/nvim/init.lua
index 3f1faa3..09f14b5 100644
--- a/nvim/init.lua
+++ b/nvim/init.lua
@@ -87,7 +87,13 @@ local keymap = vim.keymap.set
 local noremap = { noremap = true }
 local silentnoremap = { noremap = true, silent = true }
 --Toggle background
-keymap("n", "<leader>bg", function() if vim.o.background == "light" then vim.o.background = "dark" else vim.o.background = "light" end end, noremap)
+keymap("n", "<leader>bg", function()
+	if vim.o.background == "light" then
+		vim.o.background = "dark"
+	else
+		vim.o.background = "light"
+	end
+end, noremap)
 -- Easier breaking from edit modes
 keymap("n", ";;", "<Esc>", noremap)
 keymap("v", ";;", "<Esc>", noremap)
diff --git a/nvim/lua/completion.lua b/nvim/lua/completion.lua
index c21a2be..2551d4a 100644
--- a/nvim/lua/completion.lua
+++ b/nvim/lua/completion.lua
@@ -17,7 +17,8 @@ return function()
 			['<C-f>'] = cmp.mapping.scroll_docs(4),
 			['<C-Space>'] = cmp.mapping.complete(),
 			['<C-e>'] = cmp.mapping.abort(),
-			['<CR>'] = cmp.mapping.confirm({ select = true }) -- Accept currently selected item. Set `select` to `false` to only confirm explicitly selected items.
+			-- Accept the selected item, or the first item if none is selected.
+			['<CR>'] = cmp.mapping.confirm({ select = true })
 		}),
 		sources = cmp.config.sources({
 				{ name = 'lazydev',   group_index = 0 },
diff --git a/shell.nix b/shell.nix
index de3a578..54dcf16 100644
--- a/shell.nix
+++ b/shell.nix
@@ -1,2 +1,9 @@
-{ pkgs ? import <nixos-unstable> { } }:
-pkgs.mkShell { packages = with pkgs; [ nil lua-language-server ]; }
+{
+  pkgs ? import <nixos-unstable> { },
+}:
+pkgs.mkShell {
+  packages = with pkgs; [
+    nil
+    lua-language-server
+  ];
+}
diff --git a/vis/visrc.lua b/vis/visrc.lua
index c5ff9cb..5154713 100644
--- a/vis/visrc.lua
+++ b/vis/visrc.lua
@@ -1,15 +1,15 @@
 require('vis')
-local plugins = {
+local _plugins = {
 	--{ 'timoha/vis-acme', theme = true, file = 'acme' },
 	{ 'milhnl/vis-format' },
 	{ url = 'https://git.cepl.eu/cgit/vis/vis-fzf-open' },
-	-- Disable LSP, they're slow to initialize 
+	-- Disable LSP, they're slow to initialize
 	-- and we don't have good non-blocking support
 	--{ url = 'https://gitlab.com/muhq/vis-lspc.git' },
 	{ url = 'https://repo.or.cz/vis-parkour.git', alias = 'vis-parkour' }
 }
 
-local function setup_plug()
+local function _setup_plug()
 	if not pcall(require, 'plugins/vis-plug') then
 		os.execute('git clone --quiet https://github.com/erf/vis-plug ' ..
 			(os.getenv('XDG_CONFIG_HOME') or os.getenv('HOME') .. '/.config')