bulk of the refactor

modules/common/environment.nix

@@ -6,14 +6,19 @@
     neovim
     usbutils
     coreutils
-    lshw
-    systemd
-    dmidecode
     pciutils
-    nix-ld
     patchelf
     htop
-  ];
+  ] ++ 
+  lib.optionals pkgs.stdenv.isLinux (with pkgs; [
+    systemd
+    lshw
+    dmidecode
+    nix-ld
+  ]) ++
+  lib.optionals pkgs.stdenv.isDarwin (with pkgs; [
+      # nothing here, yet
+  ]);
 
   # Common environment variables that every system will use
   environment.variables.EDITOR = "nvim";