lbryinc is a module which contains common api.lbry.io and rewards code shared between lbry-desktop and lbry-android.
Add lbryinc as a dependency to your package.json file.
"lbryinc": "lbryio/lbryinc"
If you intend to make changes to the module and test immediately, you can use npm link to add the package to your node_modules folder. This will create a symlink to the folder where lbry-redux was cloned to.
cd lbryinc
yarn link
cd /<path>/<to>/<project> (ex: cd ~/lbry-desktop)
yarn link lbryinc
Run $ yarn build. If the symlink does not work, just build the file and move the bundle.js file in to the node_modules/ folder.