Running nixpkgs-update (https://nix-community.org/update-bot/) with UPDATE_INFO: cansina 0 -> 1
attrpath: cansina
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/cvsa7p7qcgbcx35zc433ial4nsg9z7c1-packages.json.drv
building '/nix/store/cvsa7p7qcgbcx35zc433ial4nsg9z7c1-packages.json.drv'...

Going to be running update for following packages:
 - cansina-0.9

Press Enter key to continue...
Running update for:
Enqueuing group of 1 packages
 - cansina-0.9: UPDATING ...
 - cansina-0.9: DONE.

Packages updated!

Diff after rewrites:
diff --git a/pkgs/by-name/ca/cansina/package.nix b/pkgs/by-name/ca/cansina/package.nix
index d2f61006db67..e22379cb41de 100644
--- a/pkgs/by-name/ca/cansina/package.nix
+++ b/pkgs/by-name/ca/cansina/package.nix
@@ -6,14 +6,14 @@
 
 python3.pkgs.buildPythonApplication (finalAttrs: {
   pname = "cansina";
-  version = "0.9";
+  version = "Py27";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "deibit";
     repo = "cansina";
     tag = finalAttrs.version;
-    hash = "sha256-vDlYJSRBVFtEdE/1bN8PniFYkpggIKMcEakphHmaTos=";
+    hash = "sha256-ZzhdDXuYbpMsQ95zxMg0ggsD0LrB1RdsHC+PP/HqgcQ=";
   };
 
   nativeBuildInputs = with python3.pkgs; [

No auto update branch exists
Received ExitFailure 1 when running
Raw command: nix-build --option sandbox true --arg config "{ allowUnfree = true; allowAliases = false; }" --arg overlays "[ ]" -A cansina
nix build failed.
Sourcing python-catch-conflicts-hook.sh
Sourcing python-remove-bin-bytecode-hook.sh
Sourcing pypa-build-hook
Using pypaBuildPhase
Sourcing python-runtime-deps-check-hook
Using pythonRuntimeDepsCheckHook
Sourcing pypa-install-hook
Using pypaInstallPhase
Sourcing python-imports-check-hook.sh
Using pythonImportsCheckPhase
Sourcing python-namespaces-hook
Sourcing python-catch-conflicts-hook.sh
Running phase: unpackPhase
@nix { "action": "setPhase", "phase": "unpackPhase" }
unpacking source archive /nix/store/ffrhm52barq4k6cp8y88nb687f2b3s0h-source
source root is source
setting SOURCE_DATE_EPOCH to timestamp 315619200 of file "source/utils/viewer.py"
Running phase: patchPhase
@nix { "action": "setPhase", "phase": "patchPhase" }
Running phase: updateAutotoolsGnuConfigScriptsPhase
@nix { "action": "setPhase", "phase": "updateAutotoolsGnuConfigScriptsPhase" }
Running phase: configurePhase
@nix { "action": "setPhase", "phase": "configurePhase" }
no configure script, doing nothing
Running phase: buildPhase
@nix { "action": "setPhase", "phase": "buildPhase" }
Executing pypaBuildPhase
Creating a wheel...
pypa build flags: --no-isolation --outdir dist/ --wheel
ERROR Source /build/source does not appear to be a Python project: no pyproject.toml or setup.py