Drop Python 3.9 support

Author: ndgrigorian

.github/workflows/build-with-clang.yml

@@ -14,7 +14,7 @@ jobs:
 
     strategy:
       matrix:
-        python: ["3.10", "3.11", "3.12", "3.13"]  # 3.9 fails - gh-issue#56
+        python: ["3.10", "3.11", "3.12", "3.13"]
 
     env:
       ONEAPI_ROOT: /opt/intel/oneapi

.github/workflows/conda-package.yml

@@ -21,7 +21,7 @@ jobs:
 
     strategy:
       matrix:
-        python: ['3.9', '3.10', '3.11', '3.12', '3.13', '3.14']
+        python: ['3.10', '3.11', '3.12', '3.13', '3.14']
 
     steps:
       - name: Cancel Previous Runs
@@ -90,7 +90,7 @@ jobs:
 
     strategy:
       matrix:
-        python: ['3.9', '3.10', '3.11', '3.12', '3.13', '3.14']
+        python: ['3.10', '3.11', '3.12', '3.13', '3.14']
 
     steps:
       - name: Cancel Previous Runs
@@ -152,7 +152,7 @@ jobs:
 
     strategy:
       matrix:
-        python: ['3.9', '3.10', '3.11', '3.12', '3.13', '3.14']
+        python: ['3.10', '3.11', '3.12', '3.13', '3.14']
         experimental: [false]
         runner: [ubuntu-latest]
     continue-on-error: ${{ matrix.experimental }}
@@ -226,7 +226,7 @@ jobs:
 
     strategy:
       matrix:
-        python: ['3.9', '3.10', '3.11', '3.12', '3.13', '3.14']
+        python: ['3.10', '3.11', '3.12', '3.13', '3.14']
         experimental: [false]
         runner: [windows-latest]
     continue-on-error: ${{ matrix.experimental }}

pyproject.toml

@@ -38,7 +38,6 @@ classifiers = [
   "Programming Language :: C",
   "Programming Language :: Python",
   "Programming Language :: Python :: 3",
-  "Programming Language :: Python :: 3.9",
   "Programming Language :: Python :: 3.10",
   "Programming Language :: Python :: 3.11",
   "Programming Language :: Python :: 3.12",
@@ -58,7 +57,7 @@ keywords = ["MKL"]
 license = "BSD-3-Clause"
 name = "mkl-service"
 readme = {file = "README.md", content-type = "text/markdown"}
-requires-python = ">=3.9,<3.15"
+requires-python = ">=3.10,<3.15"
 
 [project.optional-dependencies]
 test = ["pytest"]