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/backup/wal-e/default.nix

@@ -0,0 +1,36 @@
+{ lib, fetchFromGitHub, python3Packages, lzop, postgresql, pv }:
+
+python3Packages.buildPythonApplication rec {
+  pname = "wal-e";
+  version = "1.1.1";
+
+  namePrefix = "";
+
+  src = fetchFromGitHub {
+    owner = "wal-e";
+    repo = "wal-e";
+    rev = "v${version}";
+    hash = "sha256-I6suHkAYzDtlNFNPH4SziY93Ryp+NTHkCBuojDvv+U4=";
+  };
+
+  # needs tox
+  doCheck = false;
+
+  propagatedBuildInputs = (with python3Packages; [
+    boto
+    gevent
+    google-cloud-storage
+  ]) ++ [
+    postgresql
+    lzop
+    pv
+  ];
+
+  meta = {
+    description = "A Postgres WAL-shipping disaster recovery and replication toolkit";
+    homepage = "https://github.com/wal-e/wal-e";
+    maintainers = [ ];
+    license = lib.licenses.bsd3;
+    platforms = lib.platforms.linux;
+  };
+}