Define pytest-forked and pytest-xdist as tests target deps (#5292)

This way, the dependencies needed for testing are localized in one place
- `setup.py` (instead of several), which makes maintenance easier.

Signed-off-by: Anatoly Myachev <anatoly.myachev@intel.com>

.github/workflows/integration-tests.yml

@@ -236,7 +236,7 @@ jobs:
       - name: Install pip dependencies
         run: |
           python3 -m pip install --upgrade pip
-          python3 -m pip install cython setuptools wheel cmake==3.24 ninja pytest-forked pytest-xdist lit
+          python3 -m pip install cython setuptools wheel cmake==3.24 ninja lit
       - name: Install Triton
         env:
           CUDA_HOME: "/usr/local/cuda"
@@ -569,7 +569,7 @@ jobs:
           python3 -m venv ~/.venv
           source ~/.venv/bin/activate
           python3 -m pip install --upgrade pip
-          python3 -m pip install cython setuptools wheel cmake==3.24 ninja pytest-xdist lit pybind11
+          python3 -m pip install cython setuptools wheel cmake==3.24 ninja lit pybind11
       - name: Install Triton
         env:
           TRITON_BUILD_WITH_O1: "true"
@@ -581,7 +581,7 @@ jobs:
           echo "PATH is '$PATH'"
           cd python
           ccache --zero-stats
-          python3 -m pip install -v --no-build-isolation .
+          python3 -m pip install -v --no-build-isolation .[tests]
       - name: CCache Stats
         run: ccache --print-stats
       - name: Inspect cache directories

.github/workflows/integration-tests.yml.in

@@ -268,7 +268,7 @@ jobs:
       - name: Install pip dependencies
         run: |
           python3 -m pip install --upgrade pip
-          python3 -m pip install cython setuptools wheel cmake==3.24 ninja pytest-forked pytest-xdist lit
+          python3 -m pip install cython setuptools wheel cmake==3.24 ninja lit
 
       - name: Install Triton
         env:
@@ -481,7 +481,7 @@ jobs:
           python3 -m venv ~/.venv
           source ~/.venv/bin/activate
           python3 -m pip install --upgrade pip
-          python3 -m pip install cython setuptools wheel cmake==3.24 ninja pytest-xdist lit pybind11
+          python3 -m pip install cython setuptools wheel cmake==3.24 ninja lit pybind11
       - name: Install Triton
         env:
           TRITON_BUILD_WITH_O1: "true"
@@ -493,7 +493,7 @@ jobs:
           echo "PATH is '$PATH'"
           cd python
           ccache --zero-stats
-          python3 -m pip install -v --no-build-isolation .
+          python3 -m pip install -v --no-build-isolation .[tests]
 
       - *print-ccache-stats
       - *inspect-cache-directories-step

python/setup.py

@@ -752,6 +752,8 @@ def get_git_commit_hash(length=8):
             "isort",
             "numpy",
             "pytest",
+            "pytest-forked",
+            "pytest-xdist",
             "scipy>=1.7.1",
             "llnl-hatchet",
         ],