diff --git a/user/home/Voronind.nix b/user/home/Voronind.nix
index 0f38d394..f3d40b19 100644
--- a/user/home/Voronind.nix
+++ b/user/home/Voronind.nix
@@ -17,6 +17,7 @@ in {
 			".editorconfig".source     = ./module/Editorconfig;
 			".parallel/will-cite".text = "";
 			"app/bin".source           = ./module/bin;
+			"media/template".source    = ./module/template;
 		};
 
 		# Directories.
diff --git a/user/home/module/template/Android.nix b/user/home/module/template/Android.nix
new file mode 100644
index 00000000..39d9c8a1
--- /dev/null
+++ b/user/home/module/template/Android.nix
@@ -0,0 +1,59 @@
+{
+	description = "Android dev environment.";
+
+	inputs = {
+		nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
+	};
+
+	outputs = { self, nixpkgs } @inputs: let
+		system = "x86_64-linux";
+		lib    = nixpkgs.lib;
+		pkgs = import nixpkgs {
+			system = system;
+			config = {
+				allowUnfree                = true;
+				android_sdk.accept_license = true;
+			};
+		};
+		jdk        = pkgs.jdk11;
+		buildTools = "31.0.0";
+		androidComposition = pkgs.androidenv.composeAndroidPackages {
+			abiVersions          = [ "armeabi-v7a" "arm64-v8a" ];
+			buildToolsVersions   = [ buildTools ];
+			cmdLineToolsVersion  = "8.0";
+			includeEmulator      = false;
+			includeNDK           = false;
+			includeSources       = false;
+			includeSystemImages  = false;
+			platformToolsVersion = "34.0.5";
+			platformVersions     = [ "31" ];
+			toolsVersion         = "26.1.1";
+			useGoogleAPIs        = false;
+			useGoogleTVAddOns    = false;
+			# cmakeVersions        = [ "3.10.2" ];
+			# emulatorVersion      = "30.3.4";
+			# includeExtras        = [ "extras;google;gcm" ];
+			# ndkVersions          = ["22.0.7026061"];
+			# systemImageTypes     = [ "google_apis_playstore" ];
+		};
+		androidSdk = androidComposition.androidsdk;
+	in {
+		devShells.${system} = {
+			default = pkgs.mkShell rec {
+				nativeBuildInputs = with pkgs; [
+					android-tools
+					androidSdk
+					glibc
+					gnumake
+					jdk
+				];
+				buildInputs = with pkgs; [];
+
+				GRADLE_OPTS      = "-Dorg.gradle.project.android.aapt2FromMavenOverride=${androidSdk}/libexec/android-sdk/build-tools/${buildTools}/aapt2";
+				JAVA_HOME        = "${jdk}";
+				LD_LIBRARY_PATH  = "${lib.makeLibraryPath buildInputs}";
+				ANDROID_SDK_ROOT = "${androidSdk}/libexec/android-sdk/";
+			};
+		};
+	};
+}
diff --git a/user/home/module/template/Blank.nix b/user/home/module/template/Blank.nix
new file mode 100644
index 00000000..ebcae41f
--- /dev/null
+++ b/user/home/module/template/Blank.nix
@@ -0,0 +1,20 @@
+{
+	description = "";
+
+	inputs = {
+		nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
+	};
+
+	outputs = { self, nixpkgs } @inputs: let
+		system = "x86_64-linux";
+		lib    = nixpkgs.lib;
+		pkgs   = nixpkgs.legacyPackages.${system};
+	in {
+		devShells.${system} = {
+			default = pkgs.mkShell rec {
+				nativeBuildInputs = with pkgs; [ ];
+				buildInputs = with pkgs; [ ];
+			};
+		};
+	};
+}
diff --git a/user/home/module/template/FHSEnv.nix b/user/home/module/template/FHSEnv.nix
new file mode 100644
index 00000000..92f38098
--- /dev/null
+++ b/user/home/module/template/FHSEnv.nix
@@ -0,0 +1,20 @@
+{
+	description = "";
+
+	inputs = {
+		nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
+	};
+
+	outputs = { self, nixpkgs } @inputs: let
+		system = "x86_64-linux";
+		lib    = nixpkgs.lib;
+		pkgs   = nixpkgs.legacyPackages.${system};
+	in {
+		devShells.${system} = {
+			default = with pkgs; (buildFHSEnv {
+				name = "FHSEnv";
+				targetPkgs = pkgs: with pkgs; [ ];
+			}).env;
+		};
+	};
+}
diff --git a/user/home/module/template/Latex.nix b/user/home/module/template/Latex.nix
new file mode 100644
index 00000000..cee148a4
--- /dev/null
+++ b/user/home/module/template/Latex.nix
@@ -0,0 +1,53 @@
+{
+	description = "LuaLaTeX build env.";
+
+	inputs = {
+		nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
+	};
+
+	outputs = { self, nixpkgs } @inputs: let
+		system = "x86_64-linux";
+		lib    = nixpkgs.lib;
+		pkgs   = nixpkgs.legacyPackages.${system};
+		tex = (pkgs.texlive.combine {
+			inherit (pkgs.texlive) scheme-basic
+				amsmath
+				babel
+				capt-of
+				catchfile
+				collection-fontsextra
+				cyrillic
+				dvipng
+				dvisvgm
+				environ
+				etoolbox
+				fancyhdr
+				fontspec
+				geometry
+				hyperref
+				listofitems
+				luacode
+				luatexbase
+				montserrat
+				parskip
+				pgf
+				tcolorbox
+				tocloft
+				ulem
+				wrapfig
+				xcolor;
+
+				#(setq org-latex-compiler "lualatex")
+				#(setq org-preview-latex-default-process 'dvisvgm)
+		});
+	in {
+		devShells.${system} = {
+			default = pkgs.mkShell rec {
+				nativeBuildInputs = with pkgs; [
+					tex
+				];
+				buildInputs = with pkgs; [ ];
+			};
+		};
+	};
+}
diff --git a/user/home/module/template/Rust.nix b/user/home/module/template/Rust.nix
new file mode 100644
index 00000000..a50c097d
--- /dev/null
+++ b/user/home/module/template/Rust.nix
@@ -0,0 +1,37 @@
+{
+	description = "Rust shell env.";
+
+	inputs = {
+		nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
+	};
+
+	outputs = { self, nixpkgs } @inputs: let
+		system = "x86_64-linux";
+		pkgs   = nixpkgs.legacyPackages.${system};
+		lib    = nixpkgs.lib;
+	in {
+		devShell.${system} = pkgs.mkShell rec {
+			nativeBuildInputs = with pkgs; [
+				cargo
+				rustc
+				rust-analyzer
+				rustfmt
+
+				cmake
+				pkg-config
+				fontconfig
+			];
+			buildInputs = with pkgs; [
+				libxkbcommon
+				wayland
+				libGL
+				xorg.libX11
+				xorg.libXrandr
+				xorg.libXinerama
+				xorg.libXcursor
+				xorg.libXi
+			];
+			LD_LIBRARY_PATH = "${lib.makeLibraryPath buildInputs}";
+		};
+	};
+}