Squashed commit of the following:

commit 36b721c
Author: Christopher J. Markiewicz <[email protected]>
Date:   Thu May 27 09:59:04 2021 -0400

    TMP: Use Twine directly for now, skip test PyPI

commit 41d942b
Author: Christopher J. Markiewicz <[email protected]>
Date:   Thu May 27 09:08:02 2021 -0400

    MNT: Add content type for long description (text/x-rst)

commit 4a7d600
Author: Christopher J. Markiewicz <[email protected]>
Date:   Thu May 27 08:48:31 2021 -0400

    CI: Avoid updating feedstock on non-numeric rel branches

commit 5e8af43
Author: Christopher J. Markiewicz <[email protected]>
Date:   Thu May 27 08:46:06 2021 -0400

    CI: Move packaging from Circle to GitHub actions

Author: effigies

Diff for: .circleci/config.yml

@@ -204,61 +204,6 @@ jobs:
             - /tmp/docker/cache/Dockerfile.base-pruned
           key: dockerfile-cache-v1-{{ .Branch }}-{{ checksum "/tmp/docker/cache/Dockerfile.base-pruned" }}
 
-  pypi_precheck:
-    machine: *machine_kwds
-    working_directory: /home/circleci/nipype
-    steps:
-      - checkout:
-          path: /home/circleci/nipype
-      - run:
-          name: Check pypi preconditions
-          command: |
-            pyenv local 3.6.5
-            pip install --upgrade pip twine future wheel readme_renderer setuptools
-            python setup.py sdist bdist_wheel
-            twine check dist/*
-      - run:
-          name: Validate Python 3 installation
-          command: |
-            pyenv local 3.6.5
-            pip install --upgrade pip
-            pip install dist/nipype-*-py3-none-any.whl
-      - run:
-          name: Validate Python 3.7 installation
-          command: |
-            pyenv local 3.7.0
-            pip install --upgrade pip
-            # Pre-install a version of numpy that will not pass
-            pip install numpy==1.15.0
-            pip install dist/nipype-*-py3-none-any.whl
-            # Numpy should be upgraded to >= 1.15.3
-            test "$(pip show numpy | grep Version)" \> "Version: 1.15.2"
-      - run:
-          name: Check python_requires prevents installation on Python 3.3
-          command: |
-            pyenv install 3.3.7
-            pyenv local 3.3.7
-            FAIL=false
-            pip install dist/nipype-*-py2.py3-none-any.whl || FAIL=true
-            $FAIL
-      - store_artifacts:
-          path: /home/circleci/nipype/dist
-
-  deploy_pypi:
-    machine: *machine_kwds
-    working_directory: /home/circleci/nipype
-    steps:
-      - checkout:
-          path: /home/circleci/nipype
-      - run:
-          name: Deploy to PyPI
-          command: |
-            pyenv local 3.6.5
-            pip install --upgrade twine wheel readme_renderer setuptools
-            python setup.py check -r -s
-            python setup.py sdist bdist_wheel
-            twine upload dist/*
-
   update_feedstock:
     machine: *machine_kwds
     working_directory: /home/circleci/nipype
@@ -295,12 +240,6 @@ workflows:
   version: 2
   build_test_deploy:
     jobs:
-      - pypi_precheck:
-          filters:
-            branches:
-              only: /(rel|dev)\/.*/
-            tags:
-              only: /.*/
       - compare_base_dockerfiles:
           filters:
             branches:
@@ -325,19 +264,10 @@ workflows:
               only: /.*/
           requires:
             - test_pytest
-      - deploy_pypi:
-          filters:
-            branches:
-              ignore: /.*/
-            tags:
-              only: /.*/
-          requires:
-            - pypi_precheck
-            - test_pytest
       - update_feedstock:
           context: nipybot
           filters:
             branches:
-              only: /rel\/.*/
+              only: /rel\/\d.*/
             tags:
               only: /.*/

Diff for: .github/workflows/package.yml

@@ -0,0 +1,61 @@
+name: Packaging
+
+on:
+  push:
+    branches:
+      - master
+      - maint/*
+      - rel/*
+    tags:
+      - '*'
+
+defaults:
+  run:
+    shell: bash
+
+jobs:
+  package:
+    # Build packages and upload
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        include:
+          - os: ubuntu-latest
+            python-version: 3.8
+    steps:
+      - uses: actions/checkout@v2
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v2
+        with:
+          python-version: ${{ matrix.python-version }}
+      - name: Display Python version
+        run: python -c "import sys; print(sys.version)"
+      - name: Create virtual environment
+        run: tools/ci/create_venv.sh
+      - name: Build sdist
+        run: tools/ci/build_archive.sh
+        env:
+          INSTALL_TYPE: sdist
+      - name: Build wheel
+        run: tools/ci/build_archive.sh
+        env:
+          INSTALL_TYPE: wheel
+      ### Temporary
+      - name: Check packages with twine
+        run: |
+          pip install twine
+          twine check dist/*
+      ### Switch back to this if we figure out who has permissions on test.pypi.org
+      # - name: Test PyPI upload
+      #   uses: pypa/gh-action-pypi-publish@master
+      #   with:
+      #     user: __token__
+      #     password: ${{ secrets.TEST_PYPI_API_TOKEN }}
+      #     repository_url: https://test.pypi.org/legacy/
+      #     skip_existing: true
+      - name: Upload to PyPI (on tags)
+        if: github.event_name == 'push' && startsWith(github.ref, 'refs/tags')
+        uses: pypa/gh-action-pypi-publish@master
+        with:
+          user: __token__
+          password: ${{ secrets.PYPI_API_TOKEN }}

Diff for: setup.py

@@ -119,6 +119,7 @@ def main():
         maintainer_email=ldict["MAINTAINER_EMAIL"],
         description=ldict["DESCRIPTION"],
         long_description=ldict["LONG_DESCRIPTION"],
+        long_description_content_type="text/x-rst",
         url=ldict["URL"],
         download_url=ldict["DOWNLOAD_URL"],
         license=ldict["LICENSE"],