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/signal-desktop.nix

@@ -0,0 +1,69 @@
+import ./make-test-python.nix ({ pkgs, ...} :
+
+let
+  sqlcipher-signal = pkgs.writeShellScriptBin "sqlcipher" ''
+    set -eu
+
+    readonly CFG=~/.config/Signal/config.json
+    readonly KEY="$(${pkgs.jq}/bin/jq --raw-output '.key' $CFG)"
+    readonly DB="$1"
+    readonly SQL="SELECT * FROM sqlite_master where type='table'"
+    ${pkgs.sqlcipher}/bin/sqlcipher "$DB" "PRAGMA key = \"x'$KEY'\"; $SQL"
+  '';
+in {
+  name = "signal-desktop";
+  meta = with pkgs.lib.maintainers; {
+    maintainers = [ flokli primeos ];
+  };
+
+  nodes.machine = { ... }:
+
+  {
+    imports = [
+      ./common/user-account.nix
+      ./common/x11.nix
+    ];
+
+    services.xserver.enable = true;
+    test-support.displayManager.auto.user = "alice";
+    environment.systemPackages = with pkgs; [
+      signal-desktop file sqlite sqlcipher-signal
+    ];
+  };
+
+  enableOCR = true;
+
+  testScript = { nodes, ... }: let
+    user = nodes.machine.config.users.users.alice;
+  in ''
+    start_all()
+    machine.wait_for_x()
+
+    # start signal desktop
+    machine.execute("su - alice -c signal-desktop >&2 &")
+
+    # Wait for the Signal window to appear. Since usually the tests
+    # are run sandboxed and therfore with no internet, we can not wait
+    # for the message "Link your phone ...". Nor should we wait for
+    # the "Failed to connect to server" message, because when manually
+    # running this test it will be not sandboxed.
+    machine.wait_for_text("Signal")
+    machine.wait_for_text("File Edit View Window Help")
+    machine.screenshot("signal_desktop")
+
+    # Test if the database is encrypted to prevent these issues:
+    # - https://github.com/NixOS/nixpkgs/issues/108772
+    # - https://github.com/NixOS/nixpkgs/pull/117555
+    print(machine.succeed("su - alice -c 'file ~/.config/Signal/sql/db.sqlite'"))
+    machine.fail(
+        "su - alice -c 'file ~/.config/Signal/sql/db.sqlite' | grep -e SQLite -e database"
+    )
+    # Only SQLCipher should be able to read the encrypted DB:
+    machine.fail(
+        "su - alice -c 'sqlite3 ~/.config/Signal/sql/db.sqlite .databases'"
+    )
+    print(machine.succeed(
+        "su - alice -c 'sqlcipher ~/.config/Signal/sql/db.sqlite'"
+    ))
+  '';
+})