Initial

.gitignore

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+result

README.md

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+# build
+
+    $ nix-build '<nixpkgs/nixos>' -A config.system.build.isoImage -I nixos-config=chromium.nix
+
+# run
+
+   $ qemu-system-x86_64 -smp 2 -m 1024 -enable-kvm -sandbox on -cdrom result/iso/nixos-*-linux.iso

chromium.nix

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+{config, pkgs, ...}:
+{
+  imports = [
+    <nixpkgs/nixos/modules/installer/cd-dvd/installation-cd-minimal.nix>
+  ];
+
+  environment.systemPackages = with pkgs; [
+    chromium
+  ];
+
+  services.xserver = {
+    enable = true;
+    desktopManager.xterm.enable = false;
+    displayManager.slim = {
+      enable = true;
+      defaultUser = "user";
+      autoLogin = true;
+    };
+    displayManager.sessionCommands = "while [ 1 ]; do ${pkgs.chromium}/bin/chromium; done &";
+    windowManager.xmonad.enable = true;
+    windowManager.default = "xmonad";
+  };
+
+  users.extraUsers.user = {
+    isNormalUser = true;
+    extraGroups = [ "audio" ];
+    createHome = true;
+  };
+}