Running nixpkgs-update (https://nix-community.org/update-bot/) with UPDATE_INFO: espflash 4.2.0 -> 4.3.0 https://github.com/esp-rs/espflash/releases
attrpath: espflash
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/w7pjzcv8fncr88i1r7rq54zbfn39sw5k-packages.json.drv
building '/nix/store/w7pjzcv8fncr88i1r7rq54zbfn39sw5k-packages.json.drv'...

Going to be running update for following packages:
 - espflash-4.2.0

Press Enter key to continue...
Running update for:
Enqueuing group of 1 packages
 - espflash-4.2.0: UPDATING ...
 - espflash-4.2.0: DONE.

Packages updated!

Diff after rewrites:
diff --git a/pkgs/by-name/es/espflash/package.nix b/pkgs/by-name/es/espflash/package.nix
index 69e35a0021dd..e14ce6f033be 100644
--- a/pkgs/by-name/es/espflash/package.nix
+++ b/pkgs/by-name/es/espflash/package.nix
@@ -11,13 +11,13 @@
 
 rustPlatform.buildRustPackage (finalAttrs: {
   pname = "espflash";
-  version = "4.2.0";
+  version = "4.3.0";
 
   src = fetchFromGitHub {
     owner = "esp-rs";
     repo = "espflash";
     tag = "v${finalAttrs.version}";
-    hash = "sha256-Ia7o2u7egBTlzQAWnME6+/8V+5Go70wwXi/nJLKbGZM=";
+    hash = "sha256-CeXkC+3M22EmHG0KL0wMXn49bUbxgD33ojQvbeaf5Gs=";
   };
 
   nativeBuildInputs = [
@@ -30,7 +30,7 @@ rustPlatform.buildRustPackage (finalAttrs: {
 
   buildInputs = [ openssl ];
 
-  cargoHash = "sha256-Jh5JoHHfbrpwedXHuCBlIJxCTYjKfofjAoWD8QhGSH8=";
+  cargoHash = "sha256-Vgf3k0pT8VswESXuWIIeZlCFLm861BYrteRFkmhk/3M=";
 
   cargoBuildFlags = [
     "--exclude xtask"

No auto update branch exists
There might already be an open PR for this update:
- espflash: 4.2.0 -> 4.3.0
  URL "https://api.github.com/repos/NixOS/nixpkgs/issues/474106"
- espflash: 4.2.0 -> 4.3.0, fix build with structuredAttrs
  URL "https://api.github.com/repos/NixOS/nixpkgs/issues/471314"