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/admin/rset/default.nix

@@ -0,0 +1,48 @@
+{ lib, stdenv, fetchurl, coreutils, openssh, gnutar }:
+
+stdenv.mkDerivation rec {
+  pname = "rset";
+  version = "2.1";
+
+  src = fetchurl {
+    url = "https://scriptedconfiguration.org/code/${pname}-${version}.tar.gz";
+    sha256 = "0916f96afl8kcn2hpj4qhg92g2j93ycp2sb94nsz3q44sqc6ddhb";
+  };
+
+  patches = [ ./paths.patch ];
+
+  postPatch = ''
+    substituteInPlace rset.c \
+      --replace @ssh@       ${openssh}/bin/ssh \
+      --replace @miniquark@ $out/bin/miniquark \
+      --replace @rinstall@  $out/bin/rinstall \
+      --replace @rsub@      $out/bin/rsub
+
+    substituteInPlace execute.c \
+      --replace @ssh@     ${openssh}/bin/ssh \
+      --replace @ssh-add@ ${openssh}/bin/ssh-add \
+      --replace @tar@     ${gnutar}/bin/tar
+
+    substituteInPlace rutils.c \
+      --replace @install@ ${coreutils}/bin/install
+  '';
+
+  # these are to be run on the remote host,
+  # so we want to preserve the original shebang.
+  postFixup = ''
+    sed -i "1s@.*@#!/bin/sh@" $out/bin/rinstall
+    sed -i "1s@.*@#!/bin/sh@" $out/bin/rsub
+  '';
+
+  dontAddPrefix = true;
+  installFlags = [ "PREFIX=$(out)" ];
+
+  meta = with lib; {
+    homepage = "https://scriptedconfiguration.org/";
+    description = "Configure systems using any scripting language";
+    changelog = "https://github.com/eradman/rset/raw/${version}/NEWS";
+    license = licenses.isc;
+    platforms = platforms.unix;
+    maintainers = with maintainers; [ cstrahan ];
+  };
+}