MNT: fix CI and fix install on Linux

.github/workflows/ci.yml

@@ -0,0 +1,66 @@
+name: CI
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+  workflow_dispatch:
+  schedule:
+    # Monthly, 1st of the month, 6am
+    - cron: "0 6 1 * *"
+
+jobs:
+  build:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        python-version: ["3.7", "3.8", "3.9", "3.10", "3.11"]
+        os: [ubuntu-latest, macos-latest, windows-latest]
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v4
+        with:
+          python-version: ${{ matrix.python-version }}
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install build twine
+      - name: Build sdist/wheel and check metadata
+        run: |
+          python -m build
+          python -m twine check --strict dist/*
+
+  test:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        python-version: ["3.8", "3.9", "3.10", "3.11"]
+        os: [ubuntu-latest, macos-latest, windows-latest]
+        include:
+          - python-version: "3.7"
+            os: ubuntu-latest
+            name: oldest-dependencies
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v4
+        with:
+          python-version: ${{ matrix.python-version }}
+      - name: Install oldest dependencies
+        if: ${{ contains(matrix.name,'oldest') }}
+        run: |
+          python -m pip install --upgrade pip
+          pip install astropy~=4.0.0 numpy~=1.16.0 pyparsing~=2.0.0
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install .[test]
+      - name: Test with pytest
+        run: |
+          pytest --import-mode=importlib --pyargs pyregion

.readthedocs.yml

@@ -0,0 +1,26 @@
+# .readthedocs.yml
+# Read the Docs configuration file
+# See https://docs.readthedocs.io/en/stable/config-file/v2.html for details
+
+# Required
+version: 2
+
+# Set the version of Python and other tools you might need
+build:
+  os: ubuntu-20.04
+  tools:
+    python: "3.10"
+
+# Build documentation in the docs/ directory with Sphinx
+sphinx:
+  configuration: docs/conf.py
+
+# Optionally build your docs in additional formats such as PDF and ePub
+formats: html
+
+python:
+  install:
+    - method: pip
+      path: .
+      extra_requirements:
+        - docs

MANIFEST.in

@@ -1,40 +1,13 @@
 include LICENSE
 include README.rst
 include CHANGES.rst
-
-include ah_bootstrap.py
 include setup.cfg
+include setup.py
+include pyproject.toml
 
 recursive-include pyregion *.pyx *.c *.pxd
 recursive-include docs *
-recursive-include licenses *
-recursive-include cextern *
-recursive-include scripts *
 
 prune build
 prune docs/_build
 prune docs/api
-
-
-# the next few stanzas are for astropy_helpers.  It's derived from the
-# astropy_helpers/MANIFEST.in, but requires additional includes for the actual
-# package directory and egg-info.
-
-include astropy_helpers/README.rst
-include astropy_helpers/CHANGES.rst
-include astropy_helpers/LICENSE.rst
-recursive-include astropy_helpers/licenses *
-
-include astropy_helpers/ez_setup.py
-include astropy_helpers/ah_bootstrap.py
-
-recursive-include astropy_helpers/astropy_helpers *.py *.pyx *.c *.h
-recursive-include astropy_helpers/astropy_helpers.egg-info *
-# include the sphinx stuff with "*" because there are css/html/rst/etc.
-recursive-include astropy_helpers/astropy_helpers/sphinx *
-
-prune astropy_helpers/build
-prune astropy_helpers/astropy_helpers/tests
-
-
-global-exclude *.pyc *.o