Test conda environment.

Author: trivialfis

.readthedocs.yaml

@@ -21,9 +21,5 @@ build:
 sphinx:
    configuration: docs/source/conf.py
 
-# Optionally, but recommended,
-# declare the Python requirements required to build your documentation
-# See https://docs.readthedocs.io/en/stable/guides/reproducible-builds.html
-python:
-   install:
-   - requirements: docs/source/requirements.txt
+conda:
+  environment: dev/pyhwloc_ext_dev.yml