As a first step, you'll have to create and enter a folder with the appropriate name. To do that, run these commands:

   mkdir spark
   cd spark

   repo init -u https://github.com/Spark-Rom/manifest -b pyro-next

repo sync --force-sync --optimized-fetch --no-tags --no-clone-bundle --prune -j$(nproc --all)

In case you are building Mac OS X, you are required to install coreutils from MacPorts before you continue. In order to build, use this command:

   . build/env*
   lunch spark_<devicecodename>-userdebug
   mka bacon -j$(nproc --all)

Be sure to check our documents repo for any queries.