Running nixpkgs-update (https://nix-community.org/update-bot/) with UPDATE_INFO: exe2hex 0 -> 1
attrpath: exe2hex
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] this derivation will be built:
  /nix/store/b6jcyizjbzc80c3sly3bpgi4qf5janm9-packages.json.drv
building '/nix/store/b6jcyizjbzc80c3sly3bpgi4qf5janm9-packages.json.drv'...
structuredAttrs is enabled

Going to be running update for following packages:
 - exe2hex-1.5.2-unstable-2020-04-27

Press Enter key to continue...
Running update for:
Enqueuing group of 1 packages
 - exe2hex-1.5.2-unstable-2020-04-27: UPDATING ...
 - exe2hex-1.5.2-unstable-2020-04-27: DONE.

Packages updated!

Diff after rewrites:
diff --git a/pkgs/by-name/ex/exe2hex/package.nix b/pkgs/by-name/ex/exe2hex/package.nix
index 753c4ccff5e8..6339233e83fe 100644
--- a/pkgs/by-name/ex/exe2hex/package.nix
+++ b/pkgs/by-name/ex/exe2hex/package.nix
@@ -7,7 +7,7 @@
 
 python3Packages.buildPythonApplication {
   pname = "exe2hex";
-  version = "1.5.2-unstable-2020-04-27";
+  version = "1.5.1";
   pyproject = false;
 
   src = fetchFromGitHub {

An auto update branch exists with message `exe2hex: 1.5.2-unstable-2020-04-27 -> 1.5.1`. New version is 1.5.1.
An auto update branch exists with an equal or greater version