refactor nixos

nixos/common/global/env.nix

@@ -0,0 +1,32 @@
+{ pkgs, ... }:
+
+{
+  environment = {
+    binsh = "${pkgs.bash}/bin/bash";
+    shells = with pkgs; [ zsh ];
+    systemPackages = with pkgs; [
+      # Ensure home-manager is on all systems
+      home-manager
+
+      # Useful system utilities
+      tree    # directory structure
+      bc      # basic calculator
+      vim     # editor
+      ranger  # console file manager
+      htop    # system monitor
+      scrot   # screenshot
+      direnv  # load environment
+      jq      # JSON processor
+      git     # version control
+
+      # HTTP
+      curl    # transfer dato to/from server
+      wget    # download files from web
+
+      # Archive
+      unrar   # extract roshal archive
+      unzip   # extract zip archive
+    ];
+    pathsToLink = [ "/share/zsh" ];
+  };
+}