Running nixpkgs-update (https://nix-community.org/update-bot/) with UPDATE_INFO: bun 1.3.13 -> 1.4.0 https://github.com/oven-sh/bun/releases
attrpath: bun
Checking auto update branch...
[version] 
[version] generic version rewriter does not support multiple hashes
[rustCrateVersion] 
[rustCrateVersion] No cargoHash found
[golangModuleVersion] 
[golangModuleVersion] Not a buildGoModule package with vendorHash
[npmDepsVersion] 
[npmDepsVersion] No npmDepsHash
[updateScript] 
[updateScript] Success
[updateScript] these 2 derivations will be built:
  /nix/store/i23nb52hr3v3vq44kapz1apvq4wv6k36-update-bun.drv
  /nix/store/0bkaq682fxi5xvq6nwnal67hk6dawkkz-packages.json.drv
building '/nix/store/i23nb52hr3v3vq44kapz1apvq4wv6k36-update-bun.drv'...
building '/nix/store/0bkaq682fxi5xvq6nwnal67hk6dawkkz-packages.json.drv'...

Going to be running update for following packages:
 - bun-1.3.13

Press Enter key to continue...
Running update for:
Enqueuing group of 1 packages
 - bun-1.3.13: UPDATING ...
 - bun-1.3.13: DONE.

Packages updated!

Diff after rewrites:
diff --git a/pkgs/by-name/bu/bun/package.nix b/pkgs/by-name/bu/bun/package.nix
index 9a380cca1a54..a3df816c4e9f 100644
--- a/pkgs/by-name/bu/bun/package.nix
+++ b/pkgs/by-name/bu/bun/package.nix
@@ -17,7 +17,7 @@
 }:
 
 stdenvNoCC.mkDerivation (finalAttrs: {
-  version = "1.3.13";
+  version = "1.4.0";
   pname = "bun";
 
   src =
@@ -69,15 +69,15 @@ stdenvNoCC.mkDerivation (finalAttrs: {
     sources = {
       "aarch64-darwin" = fetchurl {
         url = "https://github.com/oven-sh/bun/releases/download/bun-v${finalAttrs.version}/bun-darwin-aarch64.zip";
-        hash = "sha256-VGfj9l26Umuf6pjwzOBO+vwMY+Fpcz7Ce4dqOtMtoZA=";
+        hash = "sha256-xmnpf2Fk4cluBwF0jbmN+ndJKQjL2DlMdVcTSnNd44E=";
       };
       "aarch64-linux" = fetchurl {
         url = "https://github.com/oven-sh/bun/releases/download/bun-v${finalAttrs.version}/bun-linux-aarch64.zip";
-        hash = "sha256-cLrkGzkIsKEg4eWMXIrzDnSvrjuNEbDT/djnh937SyI=";
+        hash = "sha256-SxozLuhhmD65O8/m93D/+U4+MbLDiL2uo8jtNeWO7Q4=";
       };
       "x86_64-linux" = fetchurl {
         url = "https://github.com/oven-sh/bun/releases/download/bun-v${finalAttrs.version}/bun-linux-x64-baseline.zip";
-        hash = "sha256-nYokKSpwaAkCBdqsCloiP19pc29Sh+N7+I07QDHtx1A=";
+        hash = "sha256-GE+0WV8NQBohfPfHjBvEMLqDMU2reouUgFurv3+nCX8=";
       };
     };
     updateScript = writeShellScript "update-bun" ''

No auto update branch exists
There might already be an open PR for this update:
- bun: 1.3.13 -> 1.4.0, build from source
  URL "https://api.github.com/repos/NixOS/nixpkgs/issues/555390"
- bun: 1.3.13 -> 1.4.0 with resolution of downstream package failures
  URL "https://api.github.com/repos/NixOS/nixpkgs/issues/556047"
- gitlab-duo: 9.6.0 -> 9.13.0
  URL "https://api.github.com/repos/NixOS/nixpkgs/issues/552240"