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/powerdns-admin.nix

@@ -0,0 +1,117 @@
+# Test powerdns-admin
+{ system ? builtins.currentSystem
+, config ? { }
+, pkgs ? import ../.. { inherit system config; }
+}:
+
+with import ../lib/testing-python.nix { inherit system pkgs; };
+with pkgs.lib;
+let
+  defaultConfig = ''
+    BIND_ADDRESS = '127.0.0.1'
+    PORT = 8000
+  '';
+
+  makeAppTest = name: configs: makeTest {
+    name = "powerdns-admin-${name}";
+    meta = with pkgs.lib.maintainers; {
+      maintainers = [ Flakebi zhaofengli ];
+    };
+
+    nodes.server = { pkgs, config, ... }: mkMerge ([
+      {
+        services.powerdns-admin = {
+          enable = true;
+          secretKeyFile = "/etc/powerdns-admin/secret";
+          saltFile = "/etc/powerdns-admin/salt";
+        };
+        # It's insecure to have secrets in the world-readable nix store, but this is just a test
+        environment.etc."powerdns-admin/secret".text = "secret key";
+        environment.etc."powerdns-admin/salt".text = "salt";
+        environment.systemPackages = [
+          (pkgs.writeShellScriptBin "run-test" config.system.build.testScript)
+        ];
+      }
+    ] ++ configs);
+
+    testScript = ''
+      server.wait_for_unit("powerdns-admin.service")
+      server.wait_until_succeeds("run-test", timeout=10)
+    '';
+  };
+
+  matrix = {
+    backend = {
+      mysql = {
+        services.powerdns-admin = {
+          config = ''
+            ${defaultConfig}
+            SQLALCHEMY_DATABASE_URI = 'mysql://powerdnsadmin@/powerdnsadmin?unix_socket=/run/mysqld/mysqld.sock'
+          '';
+        };
+        systemd.services.powerdns-admin = {
+          after = [ "mysql.service" ];
+          serviceConfig.BindPaths = "/run/mysqld";
+        };
+
+        services.mysql = {
+          enable = true;
+          package = pkgs.mariadb;
+          ensureDatabases = [ "powerdnsadmin" ];
+          ensureUsers = [
+            {
+              name = "powerdnsadmin";
+              ensurePermissions = {
+                "powerdnsadmin.*" = "ALL PRIVILEGES";
+              };
+            }
+          ];
+        };
+      };
+      postgresql = {
+        services.powerdns-admin = {
+          config = ''
+            ${defaultConfig}
+            SQLALCHEMY_DATABASE_URI = 'postgresql://powerdnsadmin@/powerdnsadmin?host=/run/postgresql'
+          '';
+        };
+        systemd.services.powerdns-admin = {
+          after = [ "postgresql.service" ];
+          serviceConfig.BindPaths = "/run/postgresql";
+        };
+
+        services.postgresql = {
+          enable = true;
+          ensureDatabases = [ "powerdnsadmin" ];
+          ensureUsers = [
+            {
+              name = "powerdnsadmin";
+              ensurePermissions = {
+                "DATABASE powerdnsadmin" = "ALL PRIVILEGES";
+              };
+            }
+          ];
+        };
+      };
+    };
+    listen = {
+      tcp = {
+        services.powerdns-admin.extraArgs = [ "-b" "127.0.0.1:8000" ];
+        system.build.testScript = ''
+          curl -sSf http://127.0.0.1:8000/
+        '';
+      };
+      unix = {
+        services.powerdns-admin.extraArgs = [ "-b" "unix:/run/powerdns-admin/http.sock" ];
+        system.build.testScript = ''
+          curl -sSf --unix-socket /run/powerdns-admin/http.sock http://somehost/
+        '';
+      };
+    };
+  };
+in
+with matrix; {
+  postgresql = makeAppTest "postgresql" [ backend.postgresql listen.tcp ];
+  mysql = makeAppTest "mysql" [ backend.mysql listen.tcp ];
+  unix-listener = makeAppTest "unix-listener" [ backend.postgresql listen.unix ];
+}