diff --git a/modules/dev/node.nix b/modules/dev/node.nix
index edb5d351..e366fa7e 100644
--- a/modules/dev/node.nix
+++ b/modules/dev/node.nix
@@ -8,33 +8,40 @@
 with lib;
 with lib.my;
 let cfg = config.modules.dev.node;
+    node = pkgs.nodejs_latest;
 in {
   options.modules.dev.node = {
     enable = mkBoolOpt false;
+    enableGlobally = mkBoolOpt false;
   };
 
-  config = mkIf cfg.enable {
-    user.packages = with pkgs; [
-      nodejs
-      yarn
-    ];
+  config = mkIf cfg.enable (mkMerge [
+    (mkIf cfg.enableGlobally {
+      user.packages = with pkgs; [
+        node
+        yarn
+      ];
 
-    env.NPM_CONFIG_USERCONFIG = "$XDG_CONFIG_HOME/npm/config";
-    env.NPM_CONFIG_CACHE      = "$XDG_CACHE_HOME/npm";
-    env.NPM_CONFIG_TMP        = "$XDG_RUNTIME_DIR/npm";
-    env.NPM_CONFIG_PREFIX     = "$XDG_CACHE_HOME/npm";
-    env.NODE_REPL_HISTORY     = "$XDG_CACHE_HOME/node/repl_history";
-    env.PATH = [ "$(${pkgs.yarn}/bin/yarn global bin)" ];
+      # Run locally installed bin-script, e.g. n coffee file.coffee
+      environment.shellAliases = {
+        n  = "PATH=\"$(${node}/bin/npm bin):$PATH\"";
+        ya = "yarn";
+      };
 
-    # Run locally installed bin-script, e.g. n coffee file.coffee
-    environment.shellAliases = {
-      n  = "PATH=\"$(${pkgs.nodejs}/bin/npm bin):$PATH\"";
-      ya = "yarn";
-    };
+      env.PATH = [ "$(${pkgs.yarn}/bin/yarn global bin)" ];
+    })
 
-    home.configFile."npm/config".text = ''
-      cache=$XDG_CACHE_HOME/npm
-      prefix=$XDG_DATA_HOME/npm
-    '';
-  };
+    {
+      env.NPM_CONFIG_USERCONFIG = "$XDG_CONFIG_HOME/npm/config";
+      env.NPM_CONFIG_CACHE      = "$XDG_CACHE_HOME/npm";
+      env.NPM_CONFIG_TMP        = "$XDG_RUNTIME_DIR/npm";
+      env.NPM_CONFIG_PREFIX     = "$XDG_CACHE_HOME/npm";
+      env.NODE_REPL_HISTORY     = "$XDG_CACHE_HOME/node/repl_history";
+
+      home.configFile."npm/config".text = ''
+        cache=$XDG_CACHE_HOME/npm
+        prefix=$XDG_DATA_HOME/npm
+      '';
+    }
+  ]);
 }
diff --git a/modules/dev/python.nix b/modules/dev/python.nix
index 86395baa..721166eb 100644
--- a/modules/dev/python.nix
+++ b/modules/dev/python.nix
@@ -12,35 +12,40 @@ let cfg = config.modules.dev.python;
 in {
   options.modules.dev.python = {
     enable = mkBoolOpt false;
+    enableGlobally = mkBoolOpt false;
   };
 
-  config = mkIf cfg.enable {
-    user.packages = with pkgs; [
-      python37
-      python37Packages.pip
-      python37Packages.ipython
-      python37Packages.black
-      python37Packages.setuptools
-      python37Packages.pylint
-      python37Packages.poetry
-    ];
+  config = mkIf cfg.enable (mkMerge [
+    (mkIf cfg.enableGlobally {
+      user.packages = with pkgs; [
+        python37
+        python37Packages.pip
+        python37Packages.ipython
+        python37Packages.black
+        python37Packages.setuptools
+        python37Packages.pylint
+        python37Packages.poetry
+      ];
 
-    env.IPYTHONDIR      = "$XDG_CONFIG_HOME/ipython";
-    env.PIP_CONFIG_FILE = "$XDG_CONFIG_HOME/pip/pip.conf";
-    env.PIP_LOG_FILE    = "$XDG_DATA_HOME/pip/log";
-    env.PYLINTHOME      = "$XDG_DATA_HOME/pylint";
-    env.PYLINTRC        = "$XDG_CONFIG_HOME/pylint/pylintrc";
-    env.PYTHONSTARTUP   = "$XDG_CONFIG_HOME/python/pythonrc";
-    env.PYTHON_EGG_CACHE = "$XDG_CACHE_HOME/python-eggs";
-    env.JUPYTER_CONFIG_DIR = "$XDG_CONFIG_HOME/jupyter";
+      environment.shellAliases = {
+        py     = "python";
+        py2    = "python2";
+        py3    = "python3";
+        po     = "poetry";
+        ipy    = "ipython --no-banner";
+        ipylab = "ipython --pylab=qt5 --no-banner";
+      };
+    })
 
-    environment.shellAliases = {
-      py     = "python";
-      py2    = "python2";
-      py3    = "python3";
-      po     = "poetry";
-      ipy    = "ipython --no-banner";
-      ipylab = "ipython --pylab=qt5 --no-banner";
-    };
-  };
+    {
+      env.IPYTHONDIR      = "$XDG_CONFIG_HOME/ipython";
+      env.PIP_CONFIG_FILE = "$XDG_CONFIG_HOME/pip/pip.conf";
+      env.PIP_LOG_FILE    = "$XDG_DATA_HOME/pip/log";
+      env.PYLINTHOME      = "$XDG_DATA_HOME/pylint";
+      env.PYLINTRC        = "$XDG_CONFIG_HOME/pylint/pylintrc";
+      env.PYTHONSTARTUP   = "$XDG_CONFIG_HOME/python/pythonrc";
+      env.PYTHON_EGG_CACHE = "$XDG_CACHE_HOME/python-eggs";
+      env.JUPYTER_CONFIG_DIR = "$XDG_CONFIG_HOME/jupyter";
+    }
+  ]);
 }
diff --git a/modules/dev/rust.nix b/modules/dev/rust.nix
index 3823d2cc..b009911e 100644
--- a/modules/dev/rust.nix
+++ b/modules/dev/rust.nix
@@ -15,21 +15,26 @@ let cfg = config.modules.dev.rust;
 in {
   options.modules.dev.rust = {
     enable = mkBoolOpt false;
+    enableGlobally = mkBoolOpt false;
   };
 
-  config = mkIf cfg.enable {
-    user.packages = with pkgs; [
-      rustup
-    ];
+  config = mkIf cfg.enable (mkMerge [
+    (mkIf cfg.enableGlobally {
+      user.packages = [ pkgs.rustup ];
 
-    env.RUSTUP_HOME = "$XDG_DATA_HOME/rustup";
-    env.CARGO_HOME = "$XDG_DATA_HOME/cargo";
-    env.PATH = [ "$CARGO_HOME/bin" ];
+      env.PATH = [ "$(${pkgs.yarn}/bin/yarn global bin)" ];
+    })
 
-    environment.shellAliases = {
-      rs  = "rustc";
-      rsp = "rustup";
-      ca  = "cargo";
-    };
-  };
+    {
+      env.RUSTUP_HOME = "$XDG_DATA_HOME/rustup";
+      env.CARGO_HOME = "$XDG_DATA_HOME/cargo";
+      env.PATH = [ "$CARGO_HOME/bin" ];
+
+      environment.shellAliases = {
+        rs  = "rustc";
+        rsp = "rustup";
+        ca  = "cargo";
+      };
+    }
+  ]);
 }