diff --git a/packages/caddy.nix b/packages/caddy.nix
new file mode 100644
index 0000000..150f27d
--- /dev/null
+++ b/packages/caddy.nix
@@ -0,0 +1,74 @@
+# https://github.com/NixOS/nixpkgs/issues/14671#issuecomment-1016376290
+{ lib, pkgs, fetchFromGitHub, buildGoModule, plugins ? [ ], vendorSha256 ? "" }:
+
+with lib;
+with pkgs;
+
+let
+  pluginSrc = fetchFromGitHub {
+    owner = "mholt";
+    repo = "caddy-l4";
+    rev = "aa8cf68a3b5197c45a8b4ffd99b74465f0b5a6b1";
+    hash = "sha256-3KcoOAB+YkOU8qKM75uQo58/dljRBmP25dionQ9K2dc=";
+  };
+  caddySrc = srcOnly (fetchFromGitHub {
+    owner = "caddyserver";
+    repo = "caddy";
+    rev = "v2.6.4";
+    hash = "sha256-3a3+nFHmGONvL/TyQRqgJtrSDIn0zdGy9YwhZP17mU0=";
+  });
+
+  combinedSrc = stdenv.mkDerivation {
+    name = "caddy-src";
+
+    nativeBuildInputs = [ go ];
+
+    buildCommand = ''
+      export GOCACHE="$TMPDIR/go-cache"
+      export GOPATH="$TMPDIR/go"
+
+      mkdir -p "$out/ourcaddy"
+
+      cp -r ${caddySrc} "$out/caddy"
+      cp -r ${pluginSrc} "$out/plugin"
+
+      cd "$out/ourcaddy"
+
+      go mod init caddy
+      echo "package main" >> main.go
+      echo 'import caddycmd "github.com/caddyserver/caddy/v2/cmd"' >> main.go
+      echo 'import _ "github.com/mholt/caddy-l4"' >> main.go
+      echo "func main(){ caddycmd.Main() }" >> main.go
+      go mod edit -require=github.com/caddyserver/caddy/v2@v2.6.4
+      go mod edit -replace github.com/caddyserver/caddy/v2=../caddy
+      go mod edit -require=github.com/mholt/caddy-l4@v0.0.0
+      go mod edit -replace github.com/mholt/caddy-l4=../plugin
+    '';
+  };
+in
+buildGoModule {
+  name = "meowdy";
+
+  src = combinedSrc;
+
+  vendorHash = "sha256-GmgK2gPCkXXqVcxx+U0h7zJwRGBqFiBA7R0FwHY0SF0=";
+
+  overrideModAttrs = _: {
+    postPatch = "cd ourcaddy";
+
+    postConfigure = ''
+      go mod tidy
+    '';
+
+    postInstall = ''
+      mkdir -p "$out/.magic"
+      cp go.mod go.sum "$out/.magic"
+    '';
+  };
+
+  postPatch = "cd ourcaddy";
+
+  postConfigure = ''
+    cp vendor/.magic/go.* .
+  '';
+}