Add Rupert’s configuration

overlays/burp.nix

@@ -0,0 +1,19 @@
+{ config, ... }:
+{
+    nixpkgs.overlays = [
+        (self: super: {
+            burp = (super.burp.overrideAttrs (old: {
+                version = "3.1.4";
+                src = super.fetchFromGitHub {
+                    owner = "grke";
+                    repo = "burp";
+                    rev = "3.1.4";
+                    hash = "sha256-/vYon0XUIuMAaaaRNehzMspKMHWp0tJm8JubRt1KmZU=";
+                };
+                configureFlags = [ "--sysconfdir=/var/lib/burp" ];
+                buildInputs = with super; [ librsync ncurses openssl_1_1 zlib uthash ];
+                patches = [];
+            }));
+        })
+    ];
+}

overlays/default.nix

@@ -0,0 +1,6 @@
+{ ... }:
+{
+  imports = [
+    ./burp.nix
+  ];
+}