MKL hook trigger an error during setup

[donsylvano]

Problem encountered
During execution of my setup.py, the following error is thrown, after a long list of calls:

File "C:...\miniconda3\envs\testenv\Lib\site-packages\cx_Freeze\hooks\mkl.py", line 29, in load_mkl
if distribution.installer == "pip":
AttributeError: 'NoneType' object has no attribute 'installer'

The fact that disabling the load_mkl function solved the problem indicates that there may be a bug in the mkl hook.

To Reproduce
I created a fresh conda environnement using miniconda.
My script is very short, but it needs pandas, therefore numpy and mkl, as dependecies.

Expected behavior
As far as I understand, the hooks are there to help with importing specific libraries. In this case it seems to add a bug. I found the following workaround for my specific situation:

Workaround
After commenting out the code of the load_mkl function in hooks/mkl.py, the setup is able to create the .exe without any errors, and the resulting program runs successfully.

Desktop

• Windows 10 Entreprise
  Conda environnement with:
• cx_Freeze 7.1.0 (installed through conda-forge)
• Python 3.11.8
• mkl 2023.1.0
• numpy 1.26.4
• pandas 2.2.1

setup.py
`# -- coding: latin-1 --

from cx_Freeze import setup, Executable

import glob
import os
import sys
import shutil

includes = ['numpy','pandas','mkl']
excludes = []
packages = ['numpy', 'pandas', 'mkl']
bin_excludes = []
include_files=['test.csv']

build_exe_options = {
"optimize": 0,
"includes": includes,
"excludes": excludes,
"packages": packages,
"include_files": include_files,
"bin_excludes": bin_excludes
}

setup(
name="bs_json",
version="1.0",
description = "Read JSON from file",
options = {"build_exe": build_exe_options},
executables = [Executable("bs_json.py", base=None)]
)`

Footnote
This is my first issue report on GitHub. Any constructive feedback welcome

[marcelotduarte]

Hi!
Change the line that throws the error:
if distribution.installer == "pip":
by
if distribution and distribution.installer == "pip"
and give a feedback. I should publish the fix soon.

Sometimes the guy just says 'there was an error', and doesn't even include the long traceback. I want to fix it, but without information it's difficult. As for you, you went to the trouble of finding a workaround. That is great.

[donsylvano]

Hello,
All good! After changing the line as mentioned, no more exception and the setup succeeded.
Thanks for the quick response and for the feedback.

[marcelotduarte]

Release 7.1.1 is out!
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