fix(bepasty): workaround for nixpkgs#500538

https://github.com/NixOS/nixpkgs/pull/500538

modules/nixos/deertopia/bepasty.nix

@@ -26,6 +26,26 @@ in {
       config.services.bepasty.servers."bin.deertopia.net".dataDir
     ];
 
+    # See https://github.com/NixOS/nixpkgs/pull/500538
+    nixpkgs.overlays = [
+      (self: super: {
+        python3 = super.python3.override {
+          self = self.python3;
+          packageOverrides = self: super: {
+            xstatic-bootstrap =
+              super.xstatic-bootstrap.overridePythonAttrs (oldAttrs: rec {
+                version = "4.5.3.1";
+                src = oldAttrs.src.override {
+                  pname = "XStatic-Bootstrap";
+                  inherit version;
+                  hash = "sha256-z2fSBUN7MlCKiLaafnxbviylqK5xCXORpqb1EOv9KCA=";
+                };
+              });
+          };
+        };
+      })
+    ];
+
     services.bepasty = {
       enable = true;
       servers."bin.deertopia.net" = {