From a8f0ed5b2b883472f9770f63189f11d03d06a346 Mon Sep 17 00:00:00 2001
From: Matthew Feickert <matthew.feickert@cern.ch>
Date: Mon, 24 Jun 2024 09:17:08 -0400
Subject: [PATCH] [MAINT] Deprecate distutils in favor of setuptools (#635)
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* [MAINT] Deprecate distutils in favor of setuptools

* In CPython 3.10 distutils was formally marked as deprecated and was removed in
  Python 3.12 (https://peps.python.org/pep-0632/). Switch to using setuptools
  as a replacement, which offers a direct port of 'distutils.errors'
  as 'setuptools.errors'.

* [CI] Ensure setuptools installed for tests

* To ensure that setuptools is available for setuptools.errors install
  it for all the tests in the CI.
   - setuptools.errors was added in v60.0.0
   - c.f. https://setuptools.pypa.io/en/latest/deprecated/distutils-legacy.html

---------

Co-authored-by: Rémi Flamary <remi.flamary@gmail.com>
---
 .github/workflows/build_tests.yml         | 8 ++++----
 .github/workflows/build_tests_cuda.yml    | 3 ++-
 .github/workflows/build_wheels.yml        | 4 ++--
 .github/workflows/build_wheels_weekly.yml | 2 +-
 ot/helpers/openmp_helpers.py              | 2 +-
 5 files changed, 10 insertions(+), 9 deletions(-)

diff --git a/.github/workflows/build_tests.yml b/.github/workflows/build_tests.yml
index b42dd2b0f..cd45633de 100644
--- a/.github/workflows/build_tests.yml
+++ b/.github/workflows/build_tests.yml
@@ -35,7 +35,7 @@ jobs:
         pip install -e .
     - name: Install dependencies
       run: |
-        python -m pip install --upgrade pip
+        python -m pip install --upgrade pip setuptools
         pip install -r requirements_all.txt
         pip install pytest pytest-cov
     - name: Run tests
@@ -55,7 +55,7 @@ jobs:
         python-version: "3.10"
     - name: Install dependencies
       run: |
-        python -m pip install --upgrade pip
+        python -m pip install --upgrade pip setuptools
         pip install flake8 
     - name: Lint with flake8
       run: |
@@ -76,7 +76,7 @@ jobs:
         python-version: "3.10"
     - name: Install dependencies
       run: |
-        python -m pip install --upgrade pip
+        python -m pip install --upgrade pip setuptools
         pip install pytest pytest-cov
     - name: Install POT
       run: |
@@ -107,7 +107,7 @@ jobs:
          pip install -e .
      - name: Install dependencies
        run: |
-         python -m pip install --upgrade pip
+         python -m pip install --upgrade pip setuptools
          pip install -r requirements_all.txt
          pip install pytest 
      - name: Run tests
diff --git a/.github/workflows/build_tests_cuda.yml b/.github/workflows/build_tests_cuda.yml
index be8e47c8b..2d4e452c5 100644
--- a/.github/workflows/build_tests_cuda.yml
+++ b/.github/workflows/build_tests_cuda.yml
@@ -15,7 +15,8 @@ jobs:
     - uses: actions/checkout@v4
     - name: Install POT
       run: |
-        python3.10 -m pip install  --ignore-installed -e .
+        python3.10 -m pip install --upgrade pip setuptools
+        python3.10 -m pip install --ignore-installed -e .
     - name: Run tests
       run: |
         python3.10 -m pytest --durations=20 -v test/ ot/ --doctest-modules --color=yes --ignore=test/test_dr.py --ignore=ot.dr --ignore=ot.plot
diff --git a/.github/workflows/build_wheels.yml b/.github/workflows/build_wheels.yml
index c60babff6..ca3824975 100644
--- a/.github/workflows/build_wheels.yml
+++ b/.github/workflows/build_wheels.yml
@@ -26,7 +26,7 @@ jobs:
 
     - name: Install dependencies
       run: |
-        python -m pip install --upgrade pip
+        python -m pip install --upgrade pip setuptools
 
     - name: Install cibuildwheel
       run: |
@@ -61,7 +61,7 @@ jobs:
 
     - name: Install dependencies
       run: |
-        python -m pip install --upgrade pip
+        python -m pip install --upgrade pip setuptools
 
     - name: Install cibuildwheel
       run: |
diff --git a/.github/workflows/build_wheels_weekly.yml b/.github/workflows/build_wheels_weekly.yml
index 4746a3676..f528c2dce 100644
--- a/.github/workflows/build_wheels_weekly.yml
+++ b/.github/workflows/build_wheels_weekly.yml
@@ -25,7 +25,7 @@ jobs:
 
     - name: Install dependencies
       run: |
-        python -m pip install --upgrade pip
+        python -m pip install --upgrade pip setuptools
 
     - name: Install cibuildwheel
       run: |
diff --git a/ot/helpers/openmp_helpers.py b/ot/helpers/openmp_helpers.py
index a6ad38b06..90a2918da 100644
--- a/ot/helpers/openmp_helpers.py
+++ b/ot/helpers/openmp_helpers.py
@@ -9,7 +9,7 @@
 import textwrap
 import subprocess
 
-from distutils.errors import CompileError, LinkError
+from setuptools.errors import CompileError, LinkError
 
 from pre_build_helpers import compile_test_program