build with numpy 2.0.0rc1 (or newer) on Python >= 3.9, add python 3.1…

…2/remove 3.7 from tests

.github/workflows/tests_conda.yml

@@ -11,7 +11,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: [ "3.7", "3.8", "3.9", "3.10" , "3.11" ]
+        python-version: [ "3.8", "3.9", "3.10" , "3.11", "3.12" ]
         os: [windows-latest, ubuntu-latest, macos-latest]
         platform: [x64, x32]
         exclude:

.github/workflows/tests_latest.yml

@@ -6,7 +6,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ["3.11-dev"]
+        python-version: ["3.12-dev"]
     steps:
 
     - uses: actions/checkout@v3

pyproject.toml

@@ -1,3 +1,9 @@
 [build-system]
-requires = ["setuptools>=41.2", "cython>=0.29.20", "wheel", "oldest-supported-numpy"]
+requires = [
+    "setuptools>=41.2",
+    "cython>=0.29.20",
+    "wheel",
+    "oldest-supported-numpy ; python_version < '3.9'",
+    "numpy>=2.0.0rc1 ; python_version >= '3.9'"
+    ]
 build-backend = "setuptools.build_meta"