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/security/crowbar/default.nix

@@ -0,0 +1,42 @@
+{ fetchFromGitHub
+, freerdp
+, nmap
+, openvpn
+, python3Packages
+, lib
+, tigervnc
+}:
+
+python3Packages.buildPythonApplication rec {
+  pname = "crowbar";
+  version = "unstable-2020-04-23";
+
+  src = fetchFromGitHub {
+    owner = "galkan";
+    repo = pname;
+    rev = "500d633ff5ddfcbc70eb6d0b4d2181e5b8d3c535";
+    sha256 = "05m9vywr9976pc7il0ak8nl26mklzxlcqx0p8rlfyx1q766myqzf";
+  };
+
+  propagatedBuildInputs = [ python3Packages.paramiko ];
+
+  patchPhase = ''
+    sed -i 's,/usr/bin/xfreerdp,${freerdp}/bin/xfreerdp,g' lib/main.py
+    sed -i 's,/usr/bin/vncviewer,${tigervnc}/bin/vncviewer,g' lib/main.py
+    sed -i 's,/usr/sbin/openvpn,${openvpn}/bin/openvpn,g' lib/main.py
+
+    sed -i 's,/usr/bin/nmap,${nmap}/bin/nmap,g' lib/nmap.py
+  '';
+
+  # Sanity check
+  checkPhase = ''
+    $out/bin/crowbar --help > /dev/null
+  '';
+
+  meta = with lib; {
+    homepage = "https://github.com/galkan/crowbar";
+    description = "A brute forcing tool that can be used during penetration tests";
+    license = licenses.mit;
+    maintainers = with maintainers; [ pamplemousse ];
+  };
+}