chores: Python 3.13 in CI and use hatchling as build system

Author: jensens

.github/workflows/typecheck.yml

@@ -12,10 +12,10 @@ jobs:
     steps:
     - uses: actions/checkout@v4
 
-    - name: Set up Python 3.12
+    - name: Set up Python 3.13
       uses: actions/setup-python@v5
       with:
-        python-version: 3.12
+        python-version: 3.13
 
     - name: Install Project
       run: make install

.github/workflows/variants.yml

@@ -13,7 +13,7 @@ jobs:
         python-version:
         # we test on lowest and highest supported versions
         - "3.9"
-        - "3.12"
+        - "3.13"
         os:
           - ubuntu-latest
           - macos-latest

pyproject.toml

@@ -61,8 +61,8 @@ applications = "mxmake.topics:applications"
 i18n = "mxmake.topics:i18n"
 
 [build-system]
-requires = ["setuptools"]
-build-backend = "setuptools.build_meta"
+requires = ["hatchling"]
+build-backend = "hatchling.build"
 
 [tool.distutils.bdist_wheel]
 universal = true