Using conda ends up with sphinx 2.0.1 and cannot update doxygen version

[allanleal]

Details

• Read the Docs project URL: https://reaktoro.readthedocs.io/en/fix-readthedocs-integration-with-doxygen/
• Build URL (if applicable): https://readthedocs.org/projects/reaktoro/builds/
• Read the Docs username (if applicable):

Expected Result

Using conda with environment.yml in which sphinx==1.8.5 and doxygen==1.8.14 are specified as dependencies:

channels:
  - conda-forge

dependencies:
- cmake>=3.13
- doxygen==1.8.14
- pip:
  - sphinx==1.8.5
  - sphinx_rtd_theme
  - sphinxcontrib-images

should actually force sphinx 1.8.5, but 2.0.1 gets installed.

Doxygen version is not an up to date one in readthedocs server. So, doxygen build produces incorrect HTML files.

Actual Result

Force sphinx to be given version.
Allow doxygen to be updated.

[humitos]

Hi @allanleal! This is a known issue: #3829. There is a proposal at #5631 but it does not behave as we need.

I'm closing as duplicate. Please, subscribe to one of those if you want to be up to date.