scons_3_1_2 0 -> 1
attrpath: scons_3_1_2
Checking auto update branch...
[version] 
[version] skipping because derivation has updateScript
[rustCrateVersion] 
[rustCrateVersion] No cargoSha256 or cargoHash found
[golangModuleVersion] 
[golangModuleVersion] Not a buildGoModule package with vendorSha256 or vendorHash
[npmDepsVersion] 
[npmDepsVersion] No npmDepsHash
[updateScript] 
[updateScript] Success
[updateScript] this derivation will be built:
  /nix/store/8kk5jsl668sr0jfn9vc25a0jk82kx064-packages.json.drv
building '/nix/store/8kk5jsl668sr0jfn9vc25a0jk82kx064-packages.json.drv'...

Going to be running update for following packages:
 - scons-3.1.2

Press Enter key to continue...
Running update for:
 - scons-3.1.2: UPDATING ...
 - scons-3.1.2: DONE.

Packages updated!

Diff after rewrites:
diff --git a/pkgs/development/tools/build-managers/scons/3.1.2.nix b/pkgs/development/tools/build-managers/scons/3.1.2.nix
index 0bac0685b0d1..3337458b08b3 100644
--- a/pkgs/development/tools/build-managers/scons/3.1.2.nix
+++ b/pkgs/development/tools/build-managers/scons/3.1.2.nix
@@ -2,12 +2,12 @@
 
 let
   pname = "scons";
-  version = "3.1.2";
+  version = "4.6.0";
   src = fetchFromGitHub {
     owner = "Scons";
     repo = "scons";
-    rev = version;
-    hash = "sha256-C3U4N7+9vplzoJoevQe5Zeuz0TDmB6/miMwBJLzA3WA=";
+    rev = "refs/tags/${version}";
+    hash = "sha256-y8qVdP7oXMts5oHNCN51gufGTjHtkDlODaXtR/aqcNI=";
   };
 in
 python3.pkgs.buildPythonApplication {

No auto update branch exists
Received ExitFailure 1 when running
Raw command: /nix/store/3nqhcyc7vid1npgcd0m7arg5sn325nhz-nix-2.12.0/bin/nix-build --option sandbox true --arg config "{ allowBroken = true; allowUnfree = true; allowAliases = false; }" --arg overlays "[ ]" -A scons_3_1_2
nix build failed.
got build log for 'scons_3_1_2' from 'daemon'
Sourcing python-remove-tests-dir-hook
Sourcing python-catch-conflicts-hook.sh
Sourcing python-remove-bin-bytecode-hook.sh
Sourcing setuptools-build-hook
Using setuptoolsBuildPhase
Using setuptoolsShellHook
Sourcing pypa-install-hook
Using pypaInstallPhase
Sourcing python-imports-check-hook.sh
Using pythonImportsCheckPhase
Sourcing python-namespaces-hook
Sourcing python-catch-conflicts-hook.sh
Sourcing setuptools-check-hook
Using setuptoolsCheckPhase
@nix { "action": "setPhase", "phase": "unpackPhase" }
Running phase: unpackPhase
unpacking source archive /nix/store/5m46d34b9968llxxvb39acdwq55qkpf2-source
source root is source
setting SOURCE_DATE_EPOCH to timestamp 315619200 of file source/timings/js/plotter.js
@nix { "action": "setPhase", "phase": "patchPhase" }
Running phase: patchPhase
@nix { "action": "setPhase", "phase": "updateAutotoolsGnuConfigScriptsPhase" }
Running phase: updateAutotoolsGnuConfigScriptsPhase
@nix { "action": "setPhase", "phase": "configurePhase" }
Running phase: configurePhase
python: can't open file '/build/source/bootstrap.py': [Errno 2] No such file or directory
/nix/store/yq9qag5ak3w15nhcqplnhxpny6295l36-stdenv-linux/setup: line 131: pop_var_context: head of shell_variables not a function context