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/networking/spiped/default.nix

@@ -0,0 +1,38 @@
+{ lib, stdenv, fetchurl, openssl, coreutils }:
+
+stdenv.mkDerivation rec {
+  pname = "spiped";
+  version = "1.6.2";
+
+  src = fetchurl {
+    url    = "https://www.tarsnap.com/spiped/${pname}-${version}.tgz";
+    sha256 = "sha256-BdRofRLRHX+YiNQ/PYDFQbdyHJhwONCF9xyRuwYgRWc=";
+  };
+
+  buildInputs = [ openssl ];
+
+  postPatch = ''
+    substituteInPlace libcperciva/cpusupport/Build/cpusupport.sh \
+      --replace "dirname" "${coreutils}/bin/dirname" \
+      --replace "2>/dev/null" "2>stderr.log"
+
+    substituteInPlace libcperciva/POSIX/posix-l.sh       \
+      --replace "rm" "${coreutils}/bin/rm"   \
+      --replace "2>/dev/null" "2>stderr.log"
+   '';
+
+  installPhase = ''
+    runHook preInstall
+    mkdir -p $out/bin $out/share/man/man1
+    make install BINDIR=$out/bin MAN1DIR=$out/share/man/man1
+    runHook postInstall
+  '';
+
+  meta = {
+    description = "Utility for secure encrypted channels between sockets";
+    homepage    = "https://www.tarsnap.com/spiped.html";
+    license     = lib.licenses.bsd2;
+    platforms   = lib.platforms.unix;
+    maintainers = [ lib.maintainers.thoughtpolice ];
+  };
+}