Add a helper binary package utility

nix/lib/binary.nix

@@ -0,0 +1,21 @@
+{pkgs, patchElf ? false, name, url, sha256 ? "0000000000000000000000000000000000000000000000000000"}:
+with pkgs;
+stdenv.mkDerivation {
+    inherit name;
+    src = fetchurl {
+        url = url;
+        sha256 = sha256;
+    };
+
+    nativeBuildInputs = [
+    ] ++ lib.optionals patchElf [
+        autoPatchelfHook
+    ];
+
+    phases = ["installPhase" "fixupPhase"];
+    installPhase = ''
+        mkdir -p $out/bin
+        cp $src $out/bin/${name}
+        chmod u+x $out/bin/${name}
+    '';
+}