Running nixpkgs-update (https://nix-community.org/update-bot/) with UPDATE_INFO: bigpemu 0 -> 1
attrpath: bigpemu
Checking auto update branch...
[version] 
[version] skipping because derivation has updateScript
[rustCrateVersion] 
[rustCrateVersion] No cargoHash found
[golangModuleVersion] 
[golangModuleVersion] Not a buildGoModule package with vendorHash
[npmDepsVersion] 
[npmDepsVersion] No npmDepsHash
[updateScript] 
[updateScript] Success
[updateScript] 
Going to be running update for following packages:
 - bigpemu

Press Enter key to continue...
Running update for:
Enqueuing group of 1 packages
 - bigpemu: UPDATING ...
 - bigpemu: DONE.

Packages updated!

Diff after rewrites:
diff --git a/pkgs/by-name/bi/bigpemu/package.nix b/pkgs/by-name/bi/bigpemu/package.nix
index 320783d687ae..17bb5335b921 100644
--- a/pkgs/by-name/bi/bigpemu/package.nix
+++ b/pkgs/by-name/bi/bigpemu/package.nix
@@ -11,12 +11,12 @@
 let
   bigpemu-unwrapped = stdenv.mkDerivation rec {
     pname = "BigPEmu";
-    version = "1.19";
+    version = "1.21";
     src = fetchurl {
       url = "https://www.richwhitehouse.com/jaguar/builds/BigPEmu_Linux64_v${
         builtins.replaceStrings [ "." ] [ "" ] version
       }.tar.gz";
-      hash = "sha256-kiZ9yzDRkDLzd5EtjIn32TL27Y2GG8ysG0zTM1JRyTU=";
+      hash = "sha256-DCHgGZMmi2R0PFhAgxNh/jzuT1ONjrofFgO04cgacrA=";
     };
 
     installPhase = ''

No auto update branch exists
There might already be an open PR for this update:
- bigpemu: 1.19 -> 1.21
  URL "https://api.github.com/repos/NixOS/nixpkgs/issues/473730"