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/dex-oidc.nix

@@ -0,0 +1,78 @@
+import ./make-test-python.nix ({ lib, ... }: {
+  name = "dex-oidc";
+  meta.maintainers = with lib.maintainers; [ Flakebi ];
+
+  nodes.machine = { pkgs, ... }: {
+    environment.systemPackages = with pkgs; [ jq ];
+    services.dex = {
+      enable = true;
+      settings = {
+        issuer = "http://127.0.0.1:8080/dex";
+        storage = {
+          type = "postgres";
+          config.host = "/var/run/postgresql";
+        };
+        web.http = "127.0.0.1:8080";
+        oauth2.skipApprovalScreen = true;
+        staticClients = [
+          {
+            id = "oidcclient";
+            name = "Client";
+            redirectURIs = [ "https://example.com/callback" ];
+            secretFile = "/etc/dex/oidcclient";
+          }
+        ];
+        connectors = [
+          {
+            type = "mockPassword";
+            id = "mock";
+            name = "Example";
+            config = {
+              username = "admin";
+              password = "password";
+            };
+          }
+        ];
+      };
+    };
+
+    # This should not be set from nix but through other means to not leak the secret.
+    environment.etc."dex/oidcclient" = {
+      mode = "0400";
+      user = "dex";
+      text = "oidcclientsecret";
+    };
+
+    services.postgresql = {
+      enable = true;
+      ensureDatabases =[ "dex" ];
+      ensureUsers = [
+        {
+          name = "dex";
+          ensurePermissions = { "DATABASE dex" = "ALL PRIVILEGES"; };
+        }
+      ];
+    };
+  };
+
+  testScript = ''
+    with subtest("Web server gets ready"):
+        machine.wait_for_unit("dex.service")
+        # Wait until server accepts connections
+        machine.wait_until_succeeds("curl -fs 'localhost:8080/dex/auth/mock?client_id=oidcclient&response_type=code&redirect_uri=https://example.com/callback&scope=openid'")
+
+    with subtest("Login"):
+        state = machine.succeed("curl -fs 'localhost:8080/dex/auth/mock?client_id=oidcclient&response_type=code&redirect_uri=https://example.com/callback&scope=openid' | sed -n 's/.*state=\\(.*\\)\">.*/\\1/p'").strip()
+        print(f"Got state {state}")
+        machine.succeed(f"curl -fs 'localhost:8080/dex/auth/mock/login?back=&state={state}' -d 'login=admin&password=password'")
+        code = machine.succeed(f"curl -fs localhost:8080/dex/approval?req={state} | sed -n 's/.*code=\\(.*\\)&.*/\\1/p'").strip()
+        print(f"Got approval code {code}")
+        bearer = machine.succeed(f"curl -fs localhost:8080/dex/token -u oidcclient:oidcclientsecret -d 'grant_type=authorization_code&redirect_uri=https://example.com/callback&code={code}' | jq .access_token -r").strip()
+        print(f"Got access token {bearer}")
+
+    with subtest("Get userinfo"):
+        assert '"sub"' in machine.succeed(
+            f"curl -fs localhost:8080/dex/userinfo --oauth2-bearer {bearer}"
+        )
+  '';
+})