uboot: (firmwareOdroidC2/C4) don't invoke patch tool, use patches = [] instead

https://github.com/NixOS/nixpkgs/blob/master/pkgs/stdenv/generic/setup.sh#L948
this can do it nicely.

Signed-off-by: Anton Arapov <anton@deadbeef.mx>

nixos/modules/virtualisation/lxc.nix

@@ -0,0 +1,86 @@
+# LXC Configuration
+
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+let
+
+  cfg = config.virtualisation.lxc;
+
+in
+
+{
+  ###### interface
+
+  options.virtualisation.lxc = {
+    enable =
+      mkOption {
+        type = types.bool;
+        default = false;
+        description =
+          ''
+            This enables Linux Containers (LXC), which provides tools
+            for creating and managing system or application containers
+            on Linux.
+          '';
+      };
+
+    systemConfig =
+      mkOption {
+        type = types.lines;
+        default = "";
+        description =
+          ''
+            This is the system-wide LXC config. See
+            <citerefentry><refentrytitle>lxc.system.conf</refentrytitle>
+            <manvolnum>5</manvolnum></citerefentry>.
+          '';
+      };
+
+    defaultConfig =
+      mkOption {
+        type = types.lines;
+        default = "";
+        description =
+          ''
+            Default config (default.conf) for new containers, i.e. for
+            network config. See <citerefentry><refentrytitle>lxc.container.conf
+            </refentrytitle><manvolnum>5</manvolnum></citerefentry>.
+          '';
+      };
+
+    usernetConfig =
+      mkOption {
+        type = types.lines;
+        default = "";
+        description =
+          ''
+            This is the config file for managing unprivileged user network
+            administration access in LXC. See <citerefentry>
+            <refentrytitle>lxc-usernet</refentrytitle><manvolnum>5</manvolnum>
+            </citerefentry>.
+          '';
+      };
+  };
+
+  ###### implementation
+
+  config = mkIf cfg.enable {
+    environment.systemPackages = [ pkgs.lxc ];
+    environment.etc."lxc/lxc.conf".text = cfg.systemConfig;
+    environment.etc."lxc/lxc-usernet".text = cfg.usernetConfig;
+    environment.etc."lxc/default.conf".text = cfg.defaultConfig;
+    systemd.tmpfiles.rules = [ "d /var/lib/lxc/rootfs 0755 root root -" ];
+
+    security.apparmor.packages = [ pkgs.lxc ];
+    security.apparmor.policies = {
+      "bin.lxc-start".profile = ''
+        include ${pkgs.lxc}/etc/apparmor.d/usr.bin.lxc-start
+      '';
+      "lxc-containers".profile = ''
+        include ${pkgs.lxc}/etc/apparmor.d/lxc-containers
+      '';
+    };
+  };
+}