refactor circleci to use spin [skip actions][skip azp][skip cirrus]

Author: mattip

.circleci/config.yml

@@ -54,27 +54,20 @@ jobs:
           command: |
             python3.11 -m venv venv
             . venv/bin/activate
-            pip install --progress-bar=off -r requirements/test_requirements.txt
+            pip install --progress-bar=off -r requirements/test_requirements.txt \
+               -r requirements/build_requirements.txt \
+               -r requirements/ci_requirements.txt
             # get newer, pre-release versions of critical packages
             pip install --progress-bar=off --pre --extra-index-url https://pypi.anaconda.org/scientific-python-nightly-wheels/simple -r requirements/doc_requirements.txt
             # then install numpy HEAD, which will override the version installed above
-            pip install . --config-settings=setup-args="-Dallow-noblas=true"
-
-      - run:
-          name: create release notes
-          command: |
-            . venv/bin/activate
-            VERSION=$(pip show numpy | grep Version: | cut -d ' ' -f 2 | cut -c 1-5)
-            towncrier build --version $VERSION --yes
-            ./tools/ci/test_all_newsfragments_used.py
+            spin build --scipy-openblas=64
 
       - run:
           name: build devdocs w/ref warnings
           command: |
             . venv/bin/activate
-            cd doc
             # Don't use -q, show warning summary"
-            SPHINXOPTS="-W -n" make -e html
+            SPHINXOPTS="-W -n" spin docs
             if [[ $(find build/html -type f | wc -l) -lt 1000 ]]; then
                 echo "doc build failed: build/html is empty"
                 exit -1
@@ -95,10 +88,11 @@ jobs:
      #      destination: neps
 
       - run:
-          name: run refguide-check
+          name: check doctests
           command: |
             . venv/bin/activate
-            python tools/refguide_check.py -v
+            spin check-docs -v
+            spin check-tutorials -v
 
       - persist_to_workspace:
           root: ~/repo

requirements/doc_requirements.txt

@@ -16,3 +16,6 @@ pickleshare
 # needed to build release notes
 towncrier
 toml
+
+# for doctests, also needs pytz which is in test_requirements
+scipy-doctest