add graphviz

PyPSA · May 7, 2023 · 5bfa623 · 5bfa623
1 parent e62d947
commit 5bfa623
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/.readthedocs.yml b/.readthedocs.yml
@@ -8,8 +8,11 @@ build:
   os: ubuntu-22.04
   tools:
     python: "3.11"
+  apt_packages:
+    - graphviz
 
 python:
   install:
   - requirements: doc/requirements.txt
   system_packages: false
+  apt_packages: