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/pssh/default.nix

@@ -0,0 +1,37 @@
+{ lib, fetchFromGitHub, python3Packages, openssh, rsync }:
+
+python3Packages.buildPythonApplication rec {
+  pname = "pssh";
+  version = "2.3.4";
+
+  src = fetchFromGitHub {
+    owner = "lilydjwg";
+    repo = "pssh";
+    rev = "v${version}";
+    hash = "sha256-B1dIa6hNeq4iE8GKVhTp3Gzq7vp+v5Yyzj8uF8X71yg=";
+  };
+
+  postPatch = ''
+    for f in bin/*; do
+      substituteInPlace $f \
+        --replace "'ssh'" "'${openssh}/bin/ssh'" \
+        --replace "'scp'" "'${openssh}/bin/scp'" \
+        --replace "'rsync'" "'${rsync}/bin/rsync'"
+    done
+  '';
+
+  # Tests do not run with python3: https://github.com/lilydjwg/pssh/issues/126
+  doCheck = false;
+
+  meta = with lib; {
+    description = "Parallel SSH Tools";
+    longDescription = ''
+      PSSH provides parallel versions of OpenSSH and related tools,
+      including pssh, pscp, prsync, pnuke and pslurp.
+    '';
+    inherit (src.meta) homepage;
+    license = licenses.bsd3;
+    platforms = platforms.linux ++ platforms.darwin;
+    maintainers = with maintainers; [ chris-martin ];
+  };
+}