klipper 0 -> 1
attrpath: klipper
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
[updateScript] 
[updateScript] Success
[updateScript] this derivation will be built:
  /nix/store/wscbjmikza81ax7n7jybw0h637xy6mv5-packages.json.drv
building '/nix/store/wscbjmikza81ax7n7jybw0h637xy6mv5-packages.json.drv'...

Going to be running update for following packages:
 - klipper-unstable-2023-02-20

Press Enter key to continue...
Running update for:
 - klipper-unstable-2023-02-20: UPDATING ...
 - klipper-unstable-2023-02-20: DONE.

Packages updated!


[quotedUrls]
[quotedUrls] nothing found to replace
Diff after rewrites:
diff --git a/pkgs/servers/klipper/default.nix b/pkgs/servers/klipper/default.nix
index 3be8eb51a7e..6c6252ee277 100644
--- a/pkgs/servers/klipper/default.nix
+++ b/pkgs/servers/klipper/default.nix
@@ -7,13 +7,13 @@
 
 stdenv.mkDerivation rec {
   pname = "klipper";
-  version = "unstable-2023-02-20";
+  version = "unstable-2023-03-21";
 
   src = fetchFromGitHub {
     owner = "KevinOConnor";
     repo = "klipper";
-    rev = "848a78d1a548cfe28af20d5d0ab021558368cfae";
-    sha256 = "sha256-pSuGNBvLBJ64pm4hECign2FhtAPx6xnXlhCa2eFzrwE=";
+    rev = "52f4e20c26039a67da7c223fc72fd34a8ef9a294";
+    sha256 = "sha256-aIzIioHZddRwsflIHrc6Boj3EQdSPppznXSt3etkmJM=";
   };
 
   sourceRoot = "source/klippy";

No auto update branch exists
Old version unstable-2023-02-20" not present in master derivation file with contents: { stdenv
, lib
, fetchFromGitHub
, python3
, unstableGitUpdater
}:

stdenv.mkDerivation rec {
  pname = "klipper";
  version = "unstable-2023-03-15";

  src = fetchFromGitHub {
    owner = "KevinOConnor";
    repo = "klipper";
    rev = "c54d83c9f134d47f00da5ecd0d762e01748aaa59";
    sha256 = "sha256-zPK1dzUFLQmno4A7jEStininVcYpUh0WAFjlAqnTLS0=";
  };

  sourceRoot = "source/klippy";

  # NB: This is needed for the postBuild step
  nativeBuildInputs = [ (python3.withPackages ( p: with p; [ cffi ] )) ];

  buildInputs = [ (python3.withPackages (p: with p; [ cffi pyserial greenlet jinja2 markupsafe numpy ])) ];

  # we need to run this to prebuild the chelper.
  postBuild = ''
    python ./chelper/__init__.py
  '';

  # Python 3 is already supported but shebangs aren't updated yet
  postPatch = ''
    for file in klippy.py console.py parsedump.py; do
      substituteInPlace $file \
        --replace '/usr/bin/env python2' '/usr/bin/env python'
    done
  '';

  # NB: We don't move the main entry point into `/bin`, or even symlink it,
  # because it uses relative paths to find necessary modules. We could wrap but
  # this is used 99% of the time as a service, so it's not worth the effort.
  installPhase = ''
    runHook preInstall
    mkdir -p $out/lib/klipper
    cp -r ./* $out/lib/klipper

    # Moonraker expects `config_examples` and `docs` to be available
    # under `klipper_path`
    cp -r $src/docs $out/lib/docs
    cp -r $src/config $out/lib/config

    chmod 755 $out/lib/klipper/klippy.py
    runHook postInstall
  '';

  passthru.updateScript = unstableGitUpdater { url = meta.homepage; };

  meta = with lib; {
    description = "The Klipper 3D printer firmware";
    homepage = "https://github.com/KevinOConnor/klipper";
    maintainers = with maintainers; [ lovesegfault zhaofengli cab404 ];
    platforms = platforms.linux;
    license = licenses.gpl3Only;
  };
}