Using TheMuppets

1. Add the following line to .repo/local_manifests/roomservice.xml, replacing MYVENDOR with your device's vendor.

   <project name="TheMuppets/proprietary_vendor_MYVENDOR" path="vendor/MYVENDOR" depth="1" />

2. Rerun repo sync

3. Rerun breakfast MYDEVICE
4. Profit

Still nothing?

Ask on /r/LineageOS or #lineageos-dev on Freenode