Cache built doctrees on CircleCI.

QuLogic · QuLogic · commit d77458e0214c · 2020-04-21T00:25:08.000-04:00
This probably doesn't save much time, but will save the intersphinx
files in a cache that will hopefully reduce download errors.
diff --git a/.circleci/config.yml b/.circleci/config.yml
@@ -77,6 +77,10 @@ commands:
 
   doc-build:
     steps:
+      - restore_cache:
+          keys:
+            - sphinx-env-v1-{{ .BuildNum }}-{{ .Environment.CIRCLE_JOB }}
+            - sphinx-env-v1-{{ .Environment.CIRCLE_PREVIOUS_BUILD_NUM }}-{{ .Environment.CIRCLE_JOB }}
       - run:
           name: Build documentation
           command: |
@@ -85,6 +89,10 @@ commands:
             make html O=-T
             rm -r build/html/_sources
           working_directory: doc
+      - save_cache:
+          key: sphinx-env-v1-{{ .BuildNum }}-{{ .Environment.CIRCLE_JOB }}
+          paths:
+            - doc/build/doctrees
 
   doc-bundle:
     steps:
