chore: nix default

default.nix

@@ -1,8 +1,35 @@
-# default.nix
-let
-  nixpkgs = fetchTarball "https://github.com/NixOS/nixpkgs/tarball/nixos-22.11";
-  pkgs = import nixpkgs { config = {}; overlays = []; };
+ # allow our nixpkgs import to be overridden if desired
+{ pkgs ? import <nixpkgs> {}, fetchFromGitHub, buildGoModule, ... }:
+
+let 
+  _version = "v0.3.2";
 in
-{
-  ergo = pkgs.callPackage ./ergo.nix { };
-}
+  buildGoModule rec {
+    # name of our derivation
+    name = "ergo-proxy";
+    version = "${_version}";
+
+    # sources that will be used for our derivation.
+    src = fetchFromGitHub {
+      owner = "cristianoliveira";
+      repo = "ergo";
+      rev = _version;
+      sha256 = "sha256-C3lJWuRyGuvo33kvj3ktWKYuUZ2yJ8pDBNX7YZn6wNM=";
+    };
+
+    modSha256 = "0fagi529m1gf5jrqdlg9vxxq4yz9k9q8h92ch0gahp43kxfbgr4q";
+
+    vendorHash = "sha256-yXWM59zoZkQPpOouJoUd5KWfpdCBw47wknb+hYy6rh0=";
+
+    ldflags = [
+      "-s" "-w"
+      "-X main.VERSION=${_version}"
+    ];
+
+    meta = with pkgs.lib; {
+      description = "Ergo: The reverse proxy agent for local domain management";
+      homepage = "https://github.com/cristianoliveira/ergo";
+      license = licenses.mit;
+      maintainers = with maintainers; [ cristianoliveira ];
+    };
+  }