Create a directory for the source files & Go into created directory mkdir matrixx cd matrixx Initializing Repo repo init -u https://github.com/ProjectMatrixx/android.git -b 15.0 --git-lfs Now sync sources repo sync -c --no-clone-bundle --optimized-fetch --prune --force-sync -j$(nproc --all) Now run . build/envsetup.sh brunch devicecodename Build Flags # To include Gapps WITH_GMS := true # To Build Pixel launcher TARGET_INCLUDE_NEXUS := true #Some more GMS Flag TARGET_SUPPORTS_GOOGLE_RECORDER := true TARGET_INCLUDE_STOCK_ARCORE := true TARGET_INCLUDE_STOCK_AICORE := true To Add Maintainers name # Add in your overlay (overlay/packages/apps/Settings/res/values/strings.xml) <?xml version="1.0" encoding="utf-8"?> <!-- Copyright (C) 2025 Project Matrixx SPDX-License-Identifier: Apache-2.0 --> <resources xmlns:xliff="urn:oasis:names:tc:xliff:document:1.2"> <!-- Android version screen, build maintainer --> <string name="matrixx_maintainer">Diddy</string> </resources>