Update documentations and setups to Python 3.9

The python minimum support was bumped to 3.9 in iree-org#14810

.github/workflows/validate_and_publish_release.yml

@@ -37,7 +37,7 @@ jobs:
         id: set_up_python
         uses: actions/setup-python@d27e3f3d7c64b4bbf8e4abfb9b63b83e846e0435  # v4.5.0
         with:
-          python-version: "3.8"
+          python-version: "3.9"
       - name: Install python packages
         id: install_python_packages
         run: |

CMakeLists.txt

@@ -630,15 +630,15 @@ if(IREE_BUILD_PYTHON_BINDINGS)
   # "Bootstrapping" by first looking for the optional Development component
   # seems to be robust generally.
   # See: https://reviews.llvm.org/D118148
-  # If building Python packages, we have a hard requirement on 3.8+.
-  find_package(Python3 3.8 COMPONENTS Interpreter Development NumPy)
-  find_package(Python3 3.8 COMPONENTS Interpreter Development.Module NumPy REQUIRED)
+  # If building Python packages, we have a hard requirement on 3.9+.
+  find_package(Python3 3.9 COMPONENTS Interpreter Development NumPy)
+  find_package(Python3 3.9 COMPONENTS Interpreter Development.Module NumPy REQUIRED)
   # Some parts of the build use FindPython instead of FindPython3. Why? No
   # one knows, but they are different. So make sure to bootstrap this one too.
   # Not doing this here risks them diverging, which on multi-Python systems,
   # can be troublesome. Note that nanobind requires FindPython.
   set(Python_EXECUTABLE "${Python3_EXECUTABLE}")
-  find_package(Python 3.8 COMPONENTS Interpreter Development.Module NumPy REQUIRED)
+  find_package(Python 3.9 COMPONENTS Interpreter Development.Module NumPy REQUIRED)
 elseif(IREE_BUILD_COMPILER OR IREE_BUILD_TESTS)
   find_package(Python3 COMPONENTS Interpreter REQUIRED)
   set(Python_EXECUTABLE "${Python3_EXECUTABLE}")

compiler/setup.py

@@ -423,7 +423,6 @@ def find_git_submodule_revision(submodule_path):
         "Development Status :: 3 - Alpha",
         "License :: OSI Approved :: Apache Software License",
         "Programming Language :: Python :: 3",
-        "Programming Language :: Python :: 3.8",
         "Programming Language :: Python :: 3.9",
         "Programming Language :: Python :: 3.10",
         "Programming Language :: Python :: 3.11",

docs/website/docs/building-from-source/getting-started.md

@@ -258,7 +258,7 @@ about the bindings themselves.
 
 ### Dependencies
 
-You will need a recent Python installation >=3.8 (we aim to support
+You will need a recent Python installation >=3.9 (we aim to support
 [non-eol Python versions](https://endoflife.date/python)).
 
 ???+ Tip "Tip - Managing Python versions"

integrations/tensorflow/python_projects/iree_tf/setup.py

@@ -55,11 +55,10 @@ def load_version_info():
         "Development Status :: 3 - Alpha",
         "License :: OSI Approved :: Apache Software License",
         "Programming Language :: Python :: 3",
-        "Programming Language :: Python :: 3.8",
         "Programming Language :: Python :: 3.9",
         "Programming Language :: Python :: 3.10",
     ],
-    python_requires=">=3.8",
+    python_requires=">=3.9",
     packages=find_namespace_packages(
         include=[
             "iree.tools.tf",

integrations/tensorflow/python_projects/iree_tflite/setup.py

@@ -55,11 +55,10 @@ def load_version_info():
         "Development Status :: 3 - Alpha",
         "License :: OSI Approved :: Apache Software License",
         "Programming Language :: Python :: 3",
-        "Programming Language :: Python :: 3.8",
         "Programming Language :: Python :: 3.9",
         "Programming Language :: Python :: 3.10",
     ],
-    python_requires=">=3.8",
+    python_requires=">=3.9",
     packages=find_namespace_packages(
         include=[
             "iree.tools.tflite",

runtime/setup.py

@@ -517,13 +517,11 @@ def populate_built_package(abs_dir):
         "Development Status :: 3 - Alpha",
         "License :: OSI Approved :: Apache Software License",
         "Programming Language :: Python :: 3",
-        "Programming Language :: Python :: 3.8",
         "Programming Language :: Python :: 3.9",
         "Programming Language :: Python :: 3.10",
         "Programming Language :: Python :: 3.11",
     ],
     url="https://github.com/openxla/iree",
-    python_requires=">=3.8",
     ext_modules=(
         [
             CMakeExtension("iree._runtime_libs._runtime"),