# Use Intellij stuff with PlantUML

Source:
- https://youtrack.jetbrains.com/articles/SUPPORT-A-736/How-to-change-the-version-of-PlantUML-JAR-used-by-IntelliJ-IDEA
- https://youtrack.jetbrains.com/issue/IJPL-92405/PlantUML-theme-is-not-recognized-because-of-low-version-of-the-plugin#focus=Comments-27-5700177.0-0 for Mac specifics

TL;DR:

- The JAR is located in `~/Library/Caches/JetBrains/{Productname}/markdown/download/plantumllanguageextension/plantuml.jar`.
  - You can confirm the (old) version with `java -jar plantuml.jar --version`.
  - Delete the JAR or the plantumllanguageextension.
- Find the most recent JAR in under the [Github Releases](https://github.com/plantuml/plantuml/releases)
  - copy its hyperlink so that you have `https://github.com/plantuml/plantuml/releases/download/v1.2025.2/plantuml-1.2025.2.jar`
- Open the IDE, open the Registry with `Shift`-`Shift` and type `registry`. Open the matching `Registry…` command.
  - Find the item of `markdown.plantuml.download.link`, and overwrite the value of the .jar URL from your clipboard
- Go to File | Settings | Languages & Frameworks | Markdown and click 'Install' next to the PlantUML extension -> this will force the IDE to download the JAR from the location you specified in the registry.
  - You might restart the IDE.
  - the .jar file in `/markdown/download/plantumllanguageextension/` should exist now
  

For Graphviz: https://stackoverflow.com/a/71052034/1388892

TL;DR: `brew install graphviz`