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>

pkgs/applications/office/ledger-web/default.nix

@@ -0,0 +1,23 @@
+{ lib, bundlerApp, bundlerUpdateScript
+, withPostgresql ? true, postgresql
+, withSqlite ? false, sqlite
+}:
+
+bundlerApp {
+  pname = "ledger_web";
+  gemdir = ./.;
+  exes = [ "ledger_web" ];
+
+  buildInputs =    lib.optional withPostgresql postgresql
+                ++ lib.optional withSqlite sqlite;
+
+  passthru.updateScript = bundlerUpdateScript "ledger-web";
+
+  meta = with lib; {
+    description = "A web frontend to the Ledger CLI tool";
+    homepage = "https://github.com/peterkeen/ledger-web";
+    license = licenses.mit;
+    maintainers = with maintainers; [ peterhoeg manveru nicknovitski ];
+    platforms = platforms.linux;
+  };
+}