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/blockchains/stellar-core/default.nix

@@ -0,0 +1,50 @@
+{ lib, stdenv, fetchFromGitHub, autoconf, libtool, automake, pkg-config, git
+, bison, flex, postgresql, ripgrep, libunwind }:
+
+stdenv.mkDerivation rec {
+  pname = "stellar-core";
+  version = "18.5.0";
+
+  src = fetchFromGitHub {
+    owner = "stellar";
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "sha256-wEi22R4zb8d5CJV5eWb776Yob8B6Ok4FrbYI0SGM0H8=";
+    fetchSubmodules = true;
+  };
+
+  nativeBuildInputs = [ automake autoconf git libtool pkg-config ripgrep ];
+
+  buildInputs = [ libunwind ];
+
+  propagatedBuildInputs = [ bison flex postgresql ];
+
+  enableParallelBuilding = true;
+
+  preConfigure = ''
+    # Due to https://github.com/NixOS/nixpkgs/issues/8567 we cannot rely on
+    # having the .git directory present, so directly provide the version
+    substituteInPlace src/Makefile.am --replace '$$vers' '${pname} ${version}';
+
+    # Everything needs to be staged in git because the build uses
+    # `git ls-files` to search for source files to compile.
+    git init
+    git add .
+
+    ./autogen.sh
+  '';
+
+  meta = with lib; {
+    description = "Implements the Stellar Consensus Protocol, a federated consensus protocol";
+    longDescription = ''
+      Stellar-core is the backbone of the Stellar network. It maintains a
+      local copy of the ledger, communicating and staying in sync with other
+      instances of stellar-core on the network. Optionally, stellar-core can
+      store historical records of the ledger and participate in consensus.
+    '';
+    homepage = "https://www.stellar.org/";
+    platforms = [ "x86_64-linux" ];
+    maintainers = with maintainers; [ ];
+    license = licenses.asl20;
+  };
+}