Rm support for Python=3.6

.github/ci.sh

@@ -8,7 +8,7 @@ python -m pip install --no-use-pep517 --no-deps --disable-pip-version-check -e .
 pytest -v tests
 
 # Check documentation build only in one job, also do releases
-if [ "${PYTHON_VERSION}" = "3.6" ]; then
+if [ "${PYTHON_VERSION}" = "3.7" ]; then
   pushd docs
   make html
   popd

.github/workflows/ci.yml

@@ -34,14 +34,11 @@ jobs:
         with:
           path: ./.hypothesis
           key: hypothesisDB ${{ matrix.PYTHON_VERSION }}
-      - if: matrix.PYTHON_VERSION == '3.6'
-        shell: bash -x -l {0}
-        run: pip install dataclasses
       - name: Run the unittests
         shell: bash -x -l {0}
         run: ./.github/ci.sh ${{ matrix.PYTHON_VERSION }}
       - name: Publish a Python distribution to PyPI
-        if: github.event_name == 'push' && startsWith(github.ref, 'refs/tags') && matrix.PYTHON_VERSION == '3.6'
+        if: github.event_name == 'push' && startsWith(github.ref, 'refs/tags') && matrix.PYTHON_VERSION == '3.7'
         uses: pypa/gh-action-pypi-publish@v1.4.2
         with:
           user: __token__

environment.yml

@@ -4,7 +4,7 @@ channels:
   - nodefaults
 dependencies:
   # runtime deps
-  - python>=3.6
+  - python>=3.7
   - llvmlite>=0.36
   - numpy
   # testing

setup.py

@@ -24,6 +24,6 @@
     description="LLVM-based compiler for LightGBM models",
     long_description=long_description,
     long_description_content_type="text/markdown",
-    python_requires=">=3.6",
-    install_requires=["llvmlite>=0.36", "numpy", "dataclasses; python_version < '3.7'"],
+    python_requires=">=3.7",
+    install_requires=["llvmlite>=0.36", "numpy"],
 )