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/virtualization/google-guest-agent/default.nix

@@ -0,0 +1,53 @@
+{ buildGoModule, fetchFromGitHub, fetchpatch, lib, coreutils, makeWrapper
+, google-guest-configs, google-guest-oslogin, iproute2, dhcp, procps
+}:
+
+buildGoModule rec {
+  pname = "guest-agent";
+  version = "20220104.00";
+
+  src = fetchFromGitHub {
+    owner = "GoogleCloudPlatform";
+    repo = pname;
+    rev = version;
+    sha256 = "sha256-BC2qpnGJU/D0z8jlmAEwvmFwBk1n0ZvqPBB6Zon9N/U=";
+  };
+
+  vendorSha256 = "sha256-YcWKSiN715Z9lmNAQx+sHEgxWnhFhenCNXBS7gdMV4M=";
+
+  patches = [ ./disable-etc-mutation.patch ];
+
+  nativeBuildInputs = [ makeWrapper ];
+
+  postPatch = ''
+    substitute ${./fix-paths.patch} fix-paths.patch \
+      --subst-var out \
+      --subst-var-by true "${coreutils}/bin/true"
+    patch -p1 < ./fix-paths.patch
+  '';
+
+  # We don't add `shadow` here; it's added to PATH if `mutableUsers` is enabled.
+  binPath = lib.makeBinPath [ google-guest-configs google-guest-oslogin iproute2 dhcp procps ];
+
+  # Skip tests which require networking.
+  preCheck = ''
+    rm google_guest_agent/wsfc_test.go
+  '';
+
+  postInstall = ''
+    mkdir -p $out/etc/systemd/system
+    cp *.service $out/etc/systemd/system
+    install -Dm644 instance_configs.cfg $out/etc/default/instance_configs.cfg
+
+    wrapProgram $out/bin/google_guest_agent \
+      --prefix PATH ":" "$binPath"
+  '';
+
+  meta = with lib; {
+    homepage = "https://github.com/GoogleCloudPlatform/guest-agent";
+    description = "Guest Agent for Google Compute Engine";
+    license = licenses.asl20;
+    platforms = platforms.linux;
+    maintainers = with maintainers; [ abbradar ];
+  };
+}