MNT: Bump minimum Python to 3.10 and Numpy to 1.23

This is in accordance with NEP29 and dropping support for older
versions.

Additionally, get rid of extra CI compiler link steps.

.github/workflows/tests.yml

@@ -43,14 +43,6 @@ jobs:
         compiler: gcc
         version: 13
 
-    # The setup-fortran action doesn't work on macos-arm64 currently
-    - name: Link fortrans on macos-arm64
-      if: startsWith(matrix.os, 'macos-14')
-      run: |
-        ln -fs /opt/homebrew/bin/gfortran-13 /usr/local/bin/gfortran
-        ln -fs /opt/homebrew/bin/gcc-13 /usr/local/bin/gcc
-        ln -fs /opt/homebrew/bin/g++-13 /usr/local/bin/g++
-
     - name: Compiler versions
       run: |
         which gcc

.github/workflows/wheels.yml

@@ -48,14 +48,6 @@ jobs:
           compiler: gcc
           version: 13
 
-      # The setup-fortran action doesn't work on macos-arm64 currently
-      - name: Link fortran on macos-arm64
-        if: startsWith(matrix.os, 'macos-14')
-        run: |
-          ln -fs /opt/homebrew/bin/gfortran-13 /usr/local/bin/gfortran
-          ln -fs /opt/homebrew/bin/gcc-13 /usr/local/bin/gcc
-          ln -fs /opt/homebrew/bin/g++-13 /usr/local/bin/g++
-
       - name: Compiler versions
         run: |
           which gcc
@@ -75,7 +67,7 @@ jobs:
       - name: Build wheels
         uses: pypa/cibuildwheel@v2.17.0
         env:
-          CIBW_BUILD: "cp39-* cp310-* cp311-* cp312-*"
+          CIBW_BUILD: "cp310-* cp311-* cp312-*"
           # skip 32 bit windows and linux builds because numpy
           # does not provide wheels for these platforms
           CIBW_SKIP: "*-win32 *_i686"

pyproject.toml

@@ -19,7 +19,6 @@ classifiers = [
     "License :: OSI Approved :: MIT License",
     "Natural Language :: English",
     "Programming Language :: Python :: 3",
-    "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",
@@ -30,8 +29,8 @@ classifiers = [
     "Operating System :: Unix",
     "Operating System :: MacOS",
 ]
-requires-python = ">=3.9"
-dependencies = ["numpy"]
+requires-python = ">=3.10"
+dependencies = ["numpy>=1.23"]
 
 [project.optional-dependencies]
 tests = [