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/tiddlywiki.nix

@@ -0,0 +1,69 @@
+import ./make-test-python.nix ({ ... }: {
+  name = "tiddlywiki";
+  nodes = {
+    default = {
+      services.tiddlywiki.enable = true;
+    };
+    configured = {
+      boot.postBootCommands = ''
+        echo "username,password
+        somelogin,somesecret" > /var/lib/wikiusers.csv
+      '';
+      services.tiddlywiki = {
+        enable = true;
+        listenOptions = {
+          port = 3000;
+          credentials="../wikiusers.csv";
+          readers="(authenticated)";
+        };
+      };
+    };
+  };
+
+  testScript =
+    ''
+      start_all()
+
+      with subtest("by default works without configuration"):
+          default.wait_for_unit("tiddlywiki.service")
+
+      with subtest("by default available on port 8080 without auth"):
+          default.wait_for_unit("tiddlywiki.service")
+          default.wait_for_open_port(8080)
+          # we output to /dev/null here to avoid a python UTF-8 decode error
+          # but the check will still fail if the service doesn't respond
+          default.succeed("curl --fail -o /dev/null 127.0.0.1:8080")
+
+      with subtest("by default creates empty wiki"):
+          default.succeed("test -f /var/lib/tiddlywiki/tiddlywiki.info")
+
+      with subtest("configured on port 3000 with basic auth"):
+          configured.wait_for_unit("tiddlywiki.service")
+          configured.wait_for_open_port(3000)
+          configured.fail("curl --fail -o /dev/null 127.0.0.1:3000")
+          configured.succeed(
+              "curl --fail -o /dev/null 127.0.0.1:3000 --user somelogin:somesecret"
+          )
+
+      with subtest("restart preserves changes"):
+          # given running wiki
+          default.wait_for_unit("tiddlywiki.service")
+          # with some changes
+          default.succeed(
+              'curl --fail --request PUT --header \'X-Requested-With:TiddlyWiki\' \
+              --data \'{ "title": "title", "text": "content" }\' \
+              --url 127.0.0.1:8080/recipes/default/tiddlers/somepage '
+          )
+          default.succeed("sleep 2")
+
+          # when wiki is cycled
+          default.systemctl("restart tiddlywiki.service")
+          default.wait_for_unit("tiddlywiki.service")
+          default.wait_for_open_port(8080)
+
+          # the change is preserved
+          default.succeed(
+              "curl --fail -o /dev/null 127.0.0.1:8080/recipes/default/tiddlers/somepage"
+          )
+    '';
+})