Running nixpkgs-update (https://nix-community.org/update-bot/) with UPDATE_INFO: arti 0 -> 1
attrpath: arti
Checking auto update branch...
[version] 
[version] generic version rewriter does not support multiple hashes
[rustCrateVersion] 
[rustCrateVersion] skipping because derivation has updateScript
[golangModuleVersion] 
[golangModuleVersion] Not a buildGoModule package with vendorHash
[npmDepsVersion] 
[npmDepsVersion] No npmDepsHash
[updateScript] 
[updateScript] Success
[updateScript] this derivation will be built:
  /nix/store/12s3m5f83sl2qmj1cafrrma7sc0frp1j-packages.json.drv
building '/nix/store/12s3m5f83sl2qmj1cafrrma7sc0frp1j-packages.json.drv'...

Going to be running update for following packages:
 - arti-1.9.0

Press Enter key to continue...
Running update for:
Enqueuing group of 1 packages
 - arti-1.9.0: UPDATING ...
 - arti-1.9.0: DONE.

Packages updated!

Diff after rewrites:
diff --git a/pkgs/by-name/ar/arti/package.nix b/pkgs/by-name/ar/arti/package.nix
index ce6738fac47e..e179312b856d 100644
--- a/pkgs/by-name/ar/arti/package.nix
+++ b/pkgs/by-name/ar/arti/package.nix
@@ -12,7 +12,7 @@
 
 rustPlatform.buildRustPackage (finalAttrs: {
   pname = "arti";
-  version = "1.9.0";
+  version = "2.0.0";
 
   src = fetchFromGitLab {
     domain = "gitlab.torproject.org";
@@ -20,10 +20,10 @@ rustPlatform.buildRustPackage (finalAttrs: {
     owner = "core";
     repo = "arti";
     tag = "arti-v${finalAttrs.version}";
-    hash = "sha256-b5DWu38/iKwKcmp4BNgkeE5F522YRZZiev9gUZ/Rb1E=";
+    hash = "sha256-eqCQwBP/QLxBwjGvksFwNwNSCng/pf19DiBQ+tA4a7M=";
   };
 
-  cargoHash = "sha256-SGxSZaY8//FHhySbarfgleafF5YEWJW/fUAwo3576NI=";
+  cargoHash = "sha256-0CxlvTetxXM+xe6r98T6hzoD/IGfYkI9TqqUe+u1U2I=";
 
   nativeBuildInputs = lib.optionals stdenv.hostPlatform.isLinux [ pkg-config ];
 

No auto update branch exists
There might already be an open PR for this update:
- arti: 1.9.0 -> 2.0.0, add self as maintainer
  URL "https://api.github.com/repos/NixOS/nixpkgs/issues/486461"