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/tools/security/keyscope/default.nix

@@ -0,0 +1,49 @@
+{ lib
+, rustPlatform
+, fetchFromGitHub
+, pkg-config
+, openssl
+, stdenv
+, DiskArbitration
+, Foundation
+, IOKit
+, Security
+}:
+
+rustPlatform.buildRustPackage rec {
+  pname = "keyscope";
+  version = "1.2.2";
+
+  src = fetchFromGitHub {
+    owner = "spectralops";
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "sha256-SLVNzxwZhdK2Fk2Vu5P/j0d8IoUPzlb9e5hnJrZ8Qsk=";
+  };
+
+  cargoSha256 = "sha256-PBSQeLQ7UkWhGlRID+bv2HwzgvoiJ120t/TNKJFUY+M=";
+
+  nativeBuildInputs = [ pkg-config ];
+
+  buildInputs = [ openssl ] ++ lib.optionals stdenv.isDarwin [
+    DiskArbitration
+    Foundation
+    IOKit
+    Security
+  ];
+
+  # build script tries to get information from git
+  postPatch = ''
+    echo "fn main() {}" > build.rs
+  '';
+
+  VERGEN_GIT_SEMVER = "v${version}";
+
+  meta = with lib; {
+    description = "A key and secret workflow (validation, invalidation, etc.) tool";
+    homepage = "https://github.com/spectralops/keyscope";
+    changelog = "https://github.com/spectralops/keyscope/blob/v${version}/CHANGELOG.md";
+    license = licenses.asl20;
+    maintainers = with maintainers; [ figsoda ];
+  };
+}