feat: add nix package, module, and container

Signed-off-by: seth <getchoo@tuta.io>

nix/packages.nix

@@ -0,0 +1,29 @@
+{
+  self,
+  inputs,
+  ...
+}: {
+  perSystem = {
+    pkgs,
+    system,
+    config,
+    ...
+  }: {
+    packages = {
+      refraction = pkgs.callPackage ./derivation.nix {
+        version = builtins.substring 0 8 self.lastModifiedDate or "dirty";
+
+        inherit
+          (pkgs.darwin.apple_sdk.frameworks)
+          CoreFoundation
+          Security
+          SystemConfiguration
+          ;
+
+        naersk = inputs.naersk.lib.${system};
+      };
+
+      default = config.packages.refraction;
+    };
+  };
+}