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/tests/glusterfs.nix

@@ -0,0 +1,68 @@
+import ./make-test-python.nix ({pkgs, lib, ...}:
+
+let
+  client = { pkgs, ... } : {
+    environment.systemPackages = [ pkgs.glusterfs ];
+    virtualisation.fileSystems =
+      { "/gluster" =
+          { device = "server1:/gv0";
+            fsType = "glusterfs";
+          };
+      };
+  };
+
+  server = { pkgs, ... } : {
+    networking.firewall.enable = false;
+    services.glusterfs.enable = true;
+
+    # create a mount point for the volume
+    boot.initrd.postDeviceCommands = ''
+      ${pkgs.e2fsprogs}/bin/mkfs.ext4 -L data /dev/vdb
+    '';
+
+    virtualisation.emptyDiskImages = [ 1024 ];
+
+    virtualisation.fileSystems =
+      { "/data" =
+          { device = "/dev/disk/by-label/data";
+            fsType = "ext4";
+          };
+      };
+  };
+in {
+  name = "glusterfs";
+
+  nodes = {
+    server1 = server;
+    server2 = server;
+    client1 = client;
+    client2 = client;
+  };
+
+  testScript = ''
+    server1.wait_for_unit("glusterd.service")
+    server2.wait_for_unit("glusterd.service")
+
+    server1.wait_until_succeeds("gluster peer status")
+    server2.wait_until_succeeds("gluster peer status")
+
+    # establish initial contact
+    server1.succeed("gluster peer probe server2")
+    server1.succeed("gluster peer probe server1")
+
+    server1.succeed("gluster peer status | grep Connected")
+
+    # create volumes
+    server1.succeed("mkdir -p /data/vg0")
+    server2.succeed("mkdir -p /data/vg0")
+    server1.succeed("gluster volume create gv0 server1:/data/vg0 server2:/data/vg0")
+    server1.succeed("gluster volume start gv0")
+
+    # test clients
+    client1.wait_for_unit("gluster.mount")
+    client2.wait_for_unit("gluster.mount")
+
+    client1.succeed("echo test > /gluster/file1")
+    client2.succeed("grep test /gluster/file1")
+  '';
+})