Fix document build with scikit-learn (#7684)

* Require sphinx >= 4.4 for RTD. * Install sklearn.
2022-02-22 08:58:54 +08:00 · 2022-02-22 08:58:54 +08:00 · 584bae1fc6
commit 584bae1fc6
parent e56d1779e1
1 changed files with 2 additions and 1 deletions
--- a/doc/requirements.txt
+++ b/doc/requirements.txt
@ -1,7 +1,8 @@
-sphinx>=4.2.0
+sphinx>=4.4.0
 mock
 sphinx_rtd_theme>=1.0.0
 breathe
+scikit-learn
 sh>=1.12.14
 matplotlib>=2.1
 graphviz