diff --git a/.config/bash/module/Export.sh b/.config/bash/module/Export.sh
index c986345..e94d484 100644
--- a/.config/bash/module/Export.sh
+++ b/.config/bash/module/Export.sh
@@ -1,31 +1,7 @@
-# Set umask.
-umask 077
-
-# add all links in ~/app/bin/
+# Add all links in ~/app/bin/
 export PATH=$( find -L ${HOME}/app/bin/ -type d -printf ":%p" 2> /dev/null ):${PATH}
 
-# specify locale.
-#export LC_ALL=C
-# export LANGUAGE="en_US.UTF-8"
-
-# specify editor.
-export EDITOR=nvim
-
-# specify man page viewer.
-export MANPAGER="nvim +Man!"
-
-# specify android sdk root.
-# export ANDROID_SDK_ROOT="$HOME/.android/sdk"
-
-# specify java path.
-# export JAVA_HOME="${HOME}/app/java/x64/latest"
-
-# specify tex paths.
-# export TEXMFVAR="${HOME}/app/tex/data/var"
-# export TEXMFCONFIG="${HOME}/app/tex/data/config"
-# export TEXMFLOCAL="${HOME}/app/tex/data/local"
-
-# Dotfiles exports.
+# Bash modules.
 export BASH_MODULE_PATH="${HOME}/.config/bash/module"
 
 # Docker config.
diff --git a/.config/linux/system/flake.nix b/.config/linux/system/flake.nix
index c6ec2be..c7af9bd 100644
--- a/.config/linux/system/flake.nix
+++ b/.config/linux/system/flake.nix
@@ -19,12 +19,14 @@
 			./module/common/Bootloader.nix
 			./module/common/Distrobox.nix
 			./module/common/Dotfiles.nix
+			./module/common/Environment.nix
 			./module/common/Filesystem.nix
 			./module/common/Firefox.nix
 			./module/common/Firewall.nix
 			./module/common/Git.nix
 			./module/common/Kernel.nix
 			./module/common/Locale.nix
+			./module/common/Neovim.nix
 			./module/common/Network.nix
 			./module/common/Nix.nix
 			./module/common/Package.nix
diff --git a/.config/linux/system/module/common/Environment.nix b/.config/linux/system/module/common/Environment.nix
new file mode 100644
index 0000000..4f46472
--- /dev/null
+++ b/.config/linux/system/module/common/Environment.nix
@@ -0,0 +1,7 @@
+{ environment, ... }: {
+	security.loginDefs.settings.UMASK = "077";
+	environment.values = {
+		EDITOR   = "nvim";
+		MANPAGER = "nvim +Man!";
+	};
+}
diff --git a/.config/linux/system/module/common/Neovim.nix b/.config/linux/system/module/common/Neovim.nix
new file mode 100644
index 0000000..16be33a
--- /dev/null
+++ b/.config/linux/system/module/common/Neovim.nix
@@ -0,0 +1,5 @@
+{ ... }: {
+	programs.neovim = {
+		enable = true;
+	};
+}
diff --git a/.config/linux/system/module/common/Package.nix b/.config/linux/system/module/common/Package.nix
index 11347a4..48ff1a7 100644
--- a/.config/linux/system/module/common/Package.nix
+++ b/.config/linux/system/module/common/Package.nix
@@ -20,7 +20,6 @@
 		lsof
 		ltex-ls
 		ncdu
-		neovim
 		nmap
 		parallel
 		parted