Merge pull request #618 from dajiaji/ajitomi-fix-post-install-on-readthedocs-config-2

Fix post_install on readthedocs config.

Author: dajiaji

.readthedocs.yml

@@ -12,7 +12,7 @@ build:
       - poetry config virtualenvs.create false
     post_install:
       # Install dependencies
-      - poetry install --all-groups
+      - poetry install --only main,docs
 
 sphinx:
   configuration: docs/conf.py