diff --git a/pkgs/test/default.nix b/pkgs/test/default.nix
new file mode 100644
index 0000000..68d894c
--- /dev/null
+++ b/pkgs/test/default.nix
@@ -0,0 +1,42 @@
+# vim: set ft=nix ts=2 sw=2 sts=2 et sta
+{ system ? builtins.currentSystem, pkgs, lib, fetchurl, installShellFiles }:
+let
+  shaMap = {
+    x86_64-linux = "0mymdh2jx0sb01zbdyvncm6qcpix331dpw3lxp8vdgrl6pkvh7ib";
+    x86_64-darwin = "0hjcfrllazh5nn45w7h25833v2wfqgc59g3q13sn8n3d9nf7kz4a";
+  };
+
+  urlMap = {
+    x86_64-linux = "https://github.com/caarlos0-graveyard/test/releases/download/v1.0.6/foo_1.0.6_linux_amd64.tar.gz";
+    x86_64-darwin = "https://github.com/caarlos0-graveyard/test/releases/download/v1.0.6/foo_1.0.6_darwin_amd64.tar.gz";
+  };
+in pkgs.stdenv.mkDerivation {
+  pname = "test";
+  version = "1.0.6";
+  src = fetchurl {
+    url = urlMap.${system};
+    sha256 = shaMap.${system};
+  };
+
+  sourceRoot = ".";
+
+  nativeBuildInputs = [ installShellFiles ];
+
+  installPhase = ''
+    mkdir -p $out/bin
+    cp -vr ./moises $out/bin/moises
+  '';
+
+  system = system;
+
+  meta = with lib; {
+    description = "a test";
+    homepage = "https://test";
+    license = licenses.mit;
+
+    platforms = [
+      "x86_64-darwin"
+      "x86_64-linux"
+    ];
+  };
+}