diff --git a/flake.nix b/flake.nix
index 9f71ce8..79a0fdd 100644
--- a/flake.nix
+++ b/flake.nix
@@ -253,7 +253,7 @@
 		# Android.
 		nixOnDroidConfigurations.default = nix-on-droid.lib.nixOnDroidConfiguration {
 			modules = [
-				{ system.stateVersion = inputs.self.nixosModules.const.stateVersion; }
+				{ system.stateVersion = inputs.self.nixosModules.const.droidStateVersion; }
 				./module/NixOnDroid.nix
 			];
 			extraSpecialArgs.const  = self.nixosModules.const;
diff --git a/host/laptop/Configuration.nix b/host/laptop/Configuration.nix
index 38951c1..df49850 100644
--- a/host/laptop/Configuration.nix
+++ b/host/laptop/Configuration.nix
@@ -1,4 +1,4 @@
-{ config, pkgs, environment, ... }: {
+{ ... }: {
 	imports = [ ];
 
 	# Filesystems.
diff --git a/module/AmdGpu.nix b/module/AmdGpu.nix
index a181abb..122f410 100644
--- a/module/AmdGpu.nix
+++ b/module/AmdGpu.nix
@@ -1,4 +1,4 @@
-{ pkgs, environment, ... }: {
+{ pkgs, ... }: {
 	boot.initrd.kernelModules     = [ "amdgpu" ];
 	services.xserver.videoDrivers = [ "amdgpu" ];
 	hardware.opengl.driSupport      = true;
diff --git a/module/Docker.nix b/module/Docker.nix
index 0940bfe..a73c58a 100644
--- a/module/Docker.nix
+++ b/module/Docker.nix
@@ -1,4 +1,4 @@
-{ environment, ... }: {
+{ ... }: {
 	environment.etc.docker.source       = ./docker;
 	environment.variables.DOCKER_CONFIG = "/etc/docker";
 	virtualisation.docker.enable        = true;
diff --git a/module/NixOnDroid.nix b/module/NixOnDroid.nix
index 3aaf118..a3b5fab 100644
--- a/module/NixOnDroid.nix
+++ b/module/NixOnDroid.nix
@@ -1,45 +1,6 @@
 { pkgs, inputs, const, ... }: let
 	homePath = "/data/data/com.termux.nix/files/home";
 in {
-	environment.packages = with pkgs; [
-		android-tools
-		binwalk
-		coreutils
-		curl
-		diffutils
-		ffmpeg
-		file
-		findutils
-		gcc
-		git
-		gnugrep
-		gnumake
-		gnused
-		gnutar
-		gzip
-		hostname
-		imagemagick
-		jq
-		lsof
-		ltex-ls
-		man
-		ncdu
-		nmap
-		openssh
-		parallel
-		pv
-		ripgrep
-		rsync
-		sqlite
-		tmux
-		tree
-		utillinux
-		wget
-		xz
-		yt-dlp
-		zip unzip
-	];
-
 	home-manager.config = {
 		home.stateVersion = const.droidStateVersion;
 		home.file = {
@@ -49,7 +10,9 @@ in {
 			".ssh/config".source = ./common/ssh/Config;
 		};
 		home.sessionVariables = {
-			BASH_PATH = "${homePath}/.bash";
+			BASH_PATH          = "${homePath}/.bash";
+			NIX_CURRENT_SYSTEM = "${pkgs.stdenv.system}";
+			TERM               = "xterm-256color";
 		};
 		programs.bash = {
 			enable      = true;
@@ -69,76 +32,46 @@ in {
 				rebase.autoStash     = true;
 			};
 		};
-		programs.neovim = { # TODO: Find a way to reuse global config.
+		programs.neovim = {
 			enable   = true;
 			viAlias  = true;
 			vimAlias = true;
-			extraConfig = ''
-				set runtimepath+=~/.cache/nvim
-				set runtimepath+=~/.cache/nvim/treesitter
-				set runtimepath+=${inputs.nvimAlign}
-				set runtimepath+=${inputs.nvimAutoclose}
-				set runtimepath+=${inputs.nvimBufferline}
-				set runtimepath+=${inputs.nvimCloseBuffers}
-				set runtimepath+=${inputs.nvimDevicons}
-				set runtimepath+=${inputs.nvimGitsigns}
-				set runtimepath+=${inputs.nvimGruvboxMaterial}
-				set runtimepath+=${inputs.nvimIndentoMatic}
-				set runtimepath+=${inputs.nvimLspconfig}
-				set runtimepath+=${inputs.nvimLualine}
-				set runtimepath+=${inputs.nvimOllama}
-				set runtimepath+=${inputs.nvimPlenary}
-				set runtimepath+=${inputs.nvimSingleComment}
-				set runtimepath+=${inputs.nvimTelescope}
-				set runtimepath+=${inputs.nvimTodo}
-				set runtimepath+=${inputs.nvimTokyonight}
-				set runtimepath+=${inputs.nvimTreesitter}
-				set runtimepath+=${inputs.nvimTree}
-				set runtimepath+=${inputs.nvimTrouble}
-				set runtimepath+=${inputs.nvimWhichKey}
-
-				lua dofile("${homePath}/.nvim/key/Rekey.lua")
-				lua dofile("${homePath}/.nvim/key/Leader.lua")
-				lua dofile("${homePath}/.nvim/config/Autoread.lua")
-				lua dofile("${homePath}/.nvim/config/Etc.lua")
-				lua dofile("${homePath}/.nvim/config/Search.lua")
-				lua dofile("${homePath}/.nvim/config/Tab.lua")
-				lua dofile("${homePath}/.nvim/plugin/Filetree.lua")
-				lua dofile("${homePath}/.nvim/plugin/lsp/Rust.lua")
-				lua dofile("${homePath}/.nvim/plugin/lsp/Tex.lua")
-				lua dofile("${homePath}/.nvim/plugin/Bufferline.lua")
-				lua dofile("${homePath}/.nvim/plugin/Lualine.lua")
-				lua dofile("${homePath}/.nvim/plugin/Autoclose.lua")
-				lua dofile("${homePath}/.nvim/plugin/Gitsigns.lua")
-				lua dofile("${homePath}/.nvim/plugin/Trouble.lua")
-				lua dofile("${homePath}/.nvim/plugin/Tokyonight.lua")
-				lua dofile("${homePath}/.nvim/plugin/Gruvbox.lua")
-				lua dofile("${homePath}/.nvim/plugin/Closebuffers.lua")
-				lua dofile("${homePath}/.nvim/plugin/Telescope.lua")
-				lua dofile("${homePath}/.nvim/plugin/Todo.lua")
-				lua dofile("${homePath}/.nvim/plugin/Indent.lua")
-				lua dofile("${homePath}/.nvim/plugin/Align.lua")
-				lua dofile("${homePath}/.nvim/plugin/Treesitter.lua")
-				lua dofile("${homePath}/.nvim/plugin/Fold.lua")
-				lua dofile("${homePath}/.nvim/plugin/Ollama.lua")
-				lua dofile("${homePath}/.nvim/key/Autocomplete.lua")
-				lua dofile("${homePath}/.nvim/key/Buffer.lua")
-				lua dofile("${homePath}/.nvim/key/Comment.lua")
-				lua dofile("${homePath}/.nvim/key/Common.lua")
-				lua dofile("${homePath}/.nvim/key/Filetree.lua")
-				lua dofile("${homePath}/.nvim/key/Fold.lua")
-				lua dofile("${homePath}/.nvim/key/Gitsigns.lua")
-				lua dofile("${homePath}/.nvim/key/Lsp.lua")
-				lua dofile("${homePath}/.nvim/key/Navigation.lua")
-				lua dofile("${homePath}/.nvim/key/Ollama.lua")
-				lua dofile("${homePath}/.nvim/key/Sort.lua")
-				lua dofile("${homePath}/.nvim/key/Telescope.lua")
-				lua dofile("${homePath}/.nvim/key/Terminal.lua")
-				lua dofile("${homePath}/.nvim/key/Todo.lua")
-				lua dofile("${homePath}/.nvim/key/Trouble.lua")
-				lua dofile("${homePath}/.nvim/key/Update.lua")
-				lua dofile("${homePath}/.nvim/key/Whichkey.lua")
-			'';
 		};
 	};
+
+	environment.packages = with pkgs; [
+		android-tools
+		binwalk
+		coreutils
+		curl
+		diffutils
+		ffmpeg
+		file
+		findutils
+		git
+		gnugrep
+		gnumake
+		gnused
+		gnutar
+		gzip
+		hostname
+		imagemagick
+		jq
+		lsof
+		man
+		ncdu
+		nmap
+		openssh
+		parallel
+		pv
+		rsync
+		sqlite
+		tmux
+		tree
+		utillinux
+		wget
+		xz
+		yt-dlp
+		zip unzip
+	];
 }
diff --git a/module/common/Bash.nix b/module/common/Bash.nix
index 6d0b13d..e96dd26 100644
--- a/module/common/Bash.nix
+++ b/module/common/Bash.nix
@@ -1,4 +1,4 @@
-{ environment, lib, ... }: {
+{ lib, ... }: {
 	environment.etc.bash.source        = ./bash;
 	environment.shellAliases           = lib.mkForce {};
 	environment.variables.BASH_PATH    = "/etc/bash";
diff --git a/module/common/Bootloader.nix b/module/common/Bootloader.nix
index c33b82e..09e1a55 100644
--- a/module/common/Bootloader.nix
+++ b/module/common/Bootloader.nix
@@ -1,6 +1,6 @@
-{ lib, ... }: {
+{ ... }: {
 	# Enable non-free firmware.
-	hardware.enableRedistributableFirmware = lib.mkDefault true;
+	hardware.enableRedistributableFirmware = true;
 
 	# Configure bootloader.
 	boot.loader.systemd-boot.enable      = true;
diff --git a/module/common/Environment.nix b/module/common/Environment.nix
index 050959e..66f5d02 100644
--- a/module/common/Environment.nix
+++ b/module/common/Environment.nix
@@ -1,4 +1,4 @@
-{ environment, pkgs, ... }: {
+{ pkgs, ... }: {
 	security.loginDefs.settings.UMASK = "077";
 	environment.variables = {
 		# Neovim.
diff --git a/module/common/Firefox.nix b/module/common/Firefox.nix
index b578572..89da3c4 100644
--- a/module/common/Firefox.nix
+++ b/module/common/Firefox.nix
@@ -1,4 +1,4 @@
-{ pkgs, environment, ... }: {
+{ pkgs, ... }: {
 	# Disable profile switching on rebuild.
 	environment.variables.MOZ_LEGACY_PROFILES = "1";
 	programs.firefox = {
diff --git a/module/common/Git.nix b/module/common/Git.nix
index e36ff67..b8edc92 100644
--- a/module/common/Git.nix
+++ b/module/common/Git.nix
@@ -1,4 +1,4 @@
-{ pkgs, ... }: {
+{ ... }: {
 	programs.git = {
 		enable = true;
 		config = {
diff --git a/module/common/Gtk.nix b/module/common/Gtk.nix
index aab0862..61ba90e 100644
--- a/module/common/Gtk.nix
+++ b/module/common/Gtk.nix
@@ -1,3 +1,3 @@
-{ environment, ... }: {
+{ ... }: {
 	environment.etc.gtk.source = ./gtk;
 }
diff --git a/module/common/Nix.nix b/module/common/Nix.nix
index 6d1a438..bd60ecc 100644
--- a/module/common/Nix.nix
+++ b/module/common/Nix.nix
@@ -1,4 +1,4 @@
-{ environment, ... }: {
+{ ... }: {
 	environment.variables.NIXPKGS_ALLOW_UNFREE = "1";
 	nixpkgs.config.allowUnfree       = true;
 	nix.settings.auto-optimise-store = true;
diff --git a/module/common/Nvim.nix b/module/common/Nvim.nix
index d565d5d..f97dff9 100644
--- a/module/common/Nvim.nix
+++ b/module/common/Nvim.nix
@@ -1,22 +1,21 @@
-{ environment, inputs, ... }: let
-	nvimSrc = "/etc/nvim";
-	nvimRc = { runtimes, cfgs }: let
+{ inputs, util, ... }: let
+	nvimRc = { cfgPath, runtimes, cfgs }: let
 		runtimeRc = builtins.foldl' (acc: r:
 			acc + "set runtimepath+=${r}\n"
 		) "" runtimes;
 		cfgRc = builtins.foldl' (acc: c:
-			acc + "lua dofile(\"${nvimSrc}/${c}\")\n"
+			acc + "lua dofile(\"${cfgPath}/${c}\")\n"
 		) "" cfgs;
 	in runtimeRc + cfgRc;
 in {
 	environment.etc.nvim.source = ./nvim;
-
 	programs.neovim = {
 		enable   = true;
 		viAlias  = true;
 		vimAlias = true;
 		configure = {
-			customRC = nvimRc {
+			customRC = util.nvimRc {
+				cfgPath = "/etc/nvim";
 				runtimes = [
 					"~/.cache/nvim"
 					"~/.cache/nvim/treesitter"
diff --git a/module/common/Users.nix b/module/common/Users.nix
index 1425b79..8973bbe 100644
--- a/module/common/Users.nix
+++ b/module/common/Users.nix
@@ -1,3 +1,3 @@
-{ environment, ... }: {
+{ ... }: {
 	users.mutableUsers = false;
 }
diff --git a/module/common/Wallpaper.nix b/module/common/Wallpaper.nix
index d37b8ce..23985fe 100644
--- a/module/common/Wallpaper.nix
+++ b/module/common/Wallpaper.nix
@@ -1,3 +1,3 @@
-{ environment, ... }: {
+{ ... }: {
 	environment.etc.wallpaper.source = ./wallpaper;
 }