add preliminary gantt diagram

1 files changed, 16 insertions, 0 deletions

diff --git a/SETUP.md b/SETUP.md
index 4e1ed3d..22f9f25 100644
--- a/SETUP.md
+++ b/SETUP.md
@@ -95,3 +95,19 @@ Install these official Debian packages:
 sudo apt install texlive-binaries-sse2
 sudo apt install bat
 ```
+
+### PlantUML
+
+Debian-packaged PlantUML is [too old](https://bugs.debian.org/1004135),
+so the main jar file needs to be replaced with a newer working one.
+
+Download newest GPL version of PlantUML
+from [their website](https://plantuml.com/download).
+
+Replace Debian-packaged plantuml JAR file with the downloaded file:
+
+```
+sudo mv /usr/share/plantuml/plantuml.jar /usr/share/plantuml/plantuml.jar.orig
+sudo cp -T ~/Downloads/plantuml-*.jar /usr/share/plantuml/plantuml.jar
+sudo chown root: /usr/share/plantuml/plantuml.jar
+```