Install YAGSL

Add the YAGSL vendordep

Installing YAGSL no longer requires typing a URL. Open the WPILib Vendor Dependencies panel in the VS Code sidebar (the WPILib extension icon) — YAGSL is listed directly in the catalog alongside the other common FRC vendor libraries (PathplannerLib, photonlib, REVLib, Studica, URCL, etc.). Click Install next to it.

YAGSL listed directly in the WPILib Vendor Dependencies panel.

If your WPILib version doesn't have YAGSL in that catalog yet, install it the manual way instead: open Manage Vendor Libraries → Install new library (online) and paste the URL:

https://yet-another-software-suite.github.io/YAGSL/yagsl/yagsl.json

Run a Gradle build afterward to pull down the library before continuing.

Add vendordeps for your hardware

YAGSL wraps YAMS and talks to hardware through each vendor's own library. Install a vendordep for every piece of hardware your robot actually uses — same panel as YAGSL, same one-click Install:

Vendor	Needed for
CTRE Phoenix 6	TalonFX, TalonFXS, Pigeon 2.0, CANcoder
CTRE Phoenix 5	TalonSRX
REVLib	SparkMAX, SparkFlex
Studica	NavX / NavX3
ReduxLib	Canandgyro, Canandmag, Canandcoder
maple-sim	Physics simulation (optional, recommended)

If a vendor isn't in the panel's catalog yet on your WPILib version, install it the manual way instead — installing 3rd-party libraries covers pasting a URL, which you can get from the vendor's own install page.

Your vendor's hardware client (REV Hardware Client, Phoenix Tuner X) is a separate tool from the vendordep — install it too, it's needed for firmware updates and low-level device configuration.

Once your build succeeds with all vendordeps installed, move on to generating your configuration.