  # Packages that are explicitly required for setup.py
  _INSTALLER_REQUIREMENTS: list[tuple[str, str]] = [("pexpect>=4.8.0", "!Windows"),
                                                    ("pywinpty==2.0.2", "Windows")]
  # Conda packages that are required for a specific backend
  _BACKEND_SPECIFIC_CONDA: dict[backend_type, list[str]] = {"nvidia": ["cudatoolkit", "cudnn"],
                                                            "apple_silicon": ["libblas"]}
  # Packages that should only be installed through pip
  _FORCE_PIP: dict[backend_type, list[str]] = {"nvidia": ["tensorflow"]}
  # Revisions of tensorflow GPU and cuda/cudnn requirements. These relate specifically to the
  # Tensorflow builds available from pypi
  _TENSORFLOW_REQUIREMENTS = {">=2.10.0,<2.11.0": [">=11.0,<12.0", ">=8.0,<9.0"]}
 
</s> remove     "libblas": ("libblas", "conda-forge")}
 </s> add     "libblas": ("libblas", "conda-forge"),
    "zlib-wapi": ("zlib-wapi", "conda-forge")}
# TODO zlib-wapi is required on some Windows installs where cuDNN complains:
# Could not locate zlibwapi.dll. Please make sure it is in your library path!
# This only seems to occur on Anaconda cuDNN not conda-forge
_BACKEND_SPECIFIC_CONDA: dict[backend_type, list[str]] = {
    "nvidia": ["cudatoolkit", "cudnn", "zlib-wapi"],
    "apple_silicon": ["libblas"]}
  # Packages that are explicitly required for setup.py
  _INSTALLER_REQUIREMENTS: list[tuple[str, str]] = [("pexpect>=4.8.0", "!Windows"),
                                                    ("pywinpty==2.0.2", "Windows")]
  # Conda packages that are required for a specific backend
# TODO zlib-wapi is required on some Windows installs where cuDNN complains:
# Could not locate zlibwapi.dll. Please make sure it is in your library path!
# This only seems to occur on Anaconda cuDNN not conda-forge
_BACKEND_SPECIFIC_CONDA: dict[backend_type, list[str]] = {
    "nvidia": ["cudatoolkit", "cudnn", "zlib-wapi"],
    "apple_silicon": ["libblas"]}
# TODO zlib-wapi is required on some Windows installs where cuDNN complains:
# Could not locate zlibwapi.dll. Please make sure it is in your library path!
# This only seems to occur on Anaconda cuDNN not conda-forge
_BACKEND_SPECIFIC_CONDA: dict[backend_type, list[str]] = {
    "nvidia": ["cudatoolkit", "cudnn", "zlib-wapi"],
    "apple_silicon": ["libblas"]}
  # Packages that should only be installed through pip
  _FORCE_PIP: dict[backend_type, list[str]] = {"nvidia": ["tensorflow"]}
  # Revisions of tensorflow GPU and cuda/cudnn requirements. These relate specifically to the
  # Tensorflow builds available from pypi
  _TENSORFLOW_REQUIREMENTS = {">=2.10.0,<2.11.0": [">=11.0,<12.0", ">=8.0,<9.0"]}
keep keep keep keep replace replace keep keep keep keep keep
 bugfix: setup.py pull in zlib-wapi on nvidia windows 
setup.py