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/misc/shallot/default.nix

@@ -0,0 +1,50 @@
+{ lib, stdenv, fetchFromGitHub, fetchpatch
+, openssl
+}:
+
+stdenv.mkDerivation rec {
+  pname = "shallot";
+  version = "0.0.3";
+
+  src = fetchFromGitHub {
+    owner = "katmagic";
+    repo = "Shallot";
+    rev = "shallot-${version}";
+    sha256 = "0cjafdxvjkwb9vyifhh11mw0la7yfqswqwqmrfp1fy9jl7m0il9k";
+  };
+
+  buildInputs = [ openssl ];
+
+  patches = [
+    (fetchpatch {
+      url = "https://github.com/katmagic/Shallot/commit/c913088dfaaaf249494514f20a62f2a17b5c6606.patch";
+      sha256 = "19l1ppbxpdb0736f7plhybj08wh6rqk1lr3bxsp8jpzpnkh114b2";
+    })
+    (fetchpatch {
+      url = "https://github.com/katmagic/Shallot/commit/cd6628d97b981325e700a38f408a43df426fd569.patch";
+      sha256 = "1gaffp5wp1l5p2qdk0ix3i5fhzpx4xphl0haa6ajhqn8db7hbr9y";
+    })
+    (fetchpatch {
+      url = "https://github.com/katmagic/Shallot/commit/5c7c1ccecbbad5a121c50ba7153cbbee7ee0ebf9.patch";
+      sha256 = "1zmll4iqz39zwk8vj40n1dpvyq3403l64p2127gsjgh2l2v91s4k";
+    })
+  ];
+
+  # Workaround build failure on -fno-common toolchains like upstream
+  # gcc-10. Otherwise build fails as:
+  #   ld: src/shallot.o:(.bss+0x8): multiple definition of `lucky_thread'; src/error.o:(.bss+0x8): first defined here
+  NIX_CFLAGS_COMPILE = "-fcommon";
+
+  installPhase = ''
+    mkdir -p $out/bin
+    cp ./shallot $out/bin/
+  '';
+
+  meta = {
+    description = "Allows you to create customized .onion addresses for your hidden service";
+
+    license = lib.licenses.mit;
+    homepage = "https://github.com/katmagic/Shallot";
+    platforms = lib.platforms.linux;
+  };
+}