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/development/tools/haskell/vaultenv/default.nix

@@ -0,0 +1,99 @@
+{ mkDerivation
+, async
+, base
+, bytestring
+, connection
+, containers
+, directory
+, hpack
+, hspec
+, hspec-discover
+, hspec-expectations
+, http-client
+, http-conduit
+, lens
+, lens-aeson
+, megaparsec
+, mtl
+, optparse-applicative
+, parser-combinators
+, retry
+, lib
+, text
+, unix
+, unordered-containers
+, utf8-string
+, fetchFromGitHub
+, dotenv
+}:
+mkDerivation rec {
+  pname = "vaultenv";
+  version = "0.14.0";
+
+  src = fetchFromGitHub {
+    owner = "channable";
+    repo = "vaultenv";
+    rev = "v${version}";
+    sha256 = "sha256-sH4iaKQXgwI/WISXzMR7xqh9Dyx61U/gjYn7exgUetI=";
+  };
+
+  buildTools = [ hpack ];
+
+  prePatch = ''
+    substituteInPlace package.yaml \
+        --replace -Werror ""
+  '';
+
+  isLibrary = false;
+  isExecutable = true;
+  executableHaskellDepends = [
+    async
+    base
+    bytestring
+    connection
+    containers
+    http-client
+    http-conduit
+    lens
+    lens-aeson
+    megaparsec
+    mtl
+    optparse-applicative
+    parser-combinators
+    retry
+    text
+    unix
+    unordered-containers
+    utf8-string
+    dotenv
+  ];
+  testHaskellDepends = [
+    async
+    base
+    bytestring
+    connection
+    containers
+    directory
+    hspec
+    hspec-discover
+    hspec-expectations
+    http-client
+    http-conduit
+    lens
+    lens-aeson
+    megaparsec
+    mtl
+    optparse-applicative
+    parser-combinators
+    retry
+    text
+    unix
+    unordered-containers
+    utf8-string
+  ];
+  preConfigure = "hpack";
+  homepage = "https://github.com/channable/vaultenv#readme";
+  description = "Runs processes with secrets from HashiCorp Vault";
+  license = lib.licenses.bsd3;
+  maintainers = with lib.maintainers; [ lnl7 manveru ];
+}