Merge pull request #1627 from dlakaplan/fixsphinx

Fix sphinx build by specifying theme explicitly

CHANGELOG-unreleased.md

@@ -11,4 +11,5 @@ the released changes.
 ### Changed
 ### Added
 ### Fixed
+- Fixed RTD by specifying theme explicitly.
 ### Removed

docs/conf.py

@@ -182,8 +182,10 @@ def setup(app):
 # The theme to use for HTML and HTML Help pages.  See the documentation for
 # a list of builtin themes.
 on_rtd = os.environ.get("READTHEDOCS", None) == "True"
-if not on_rtd:  # only import and set the theme if we're building docs locally
-    html_theme = "sphinx_rtd_theme"
+# if not on_rtd:  # only import and set the theme if we're building docs locally
+#     html_theme = "sphinx_rtd_theme"
+# it seems that we need to specify it anyway
+html_theme = "sphinx_rtd_theme"
 
 # Theme options are theme-specific and customize the look and feel of a
 # theme further.  For a list of options available for each theme, see the

requirements_dev.txt

@@ -3,10 +3,10 @@ pip>=9.0.1
 setuptools>=41.0
 coverage>=4.3.4
 traitlets
-Sphinx>=2.2,!=5.1.0
+Sphinx==6.2.1
 astropy>=4.0,!=4.0.1,!=4.0.1.post1
 #astropy-helpers>=1.3
-sphinx-rtd-theme>=1.1.1
+sphinx-rtd-theme==1.2.2
 coveralls>=1.1
 wheel>=0.29.0
 pytest>=4.3