platform_manifest_twrp_omni/twrp-extras.xml

<?xml version="1.0" encoding="UTF-8"?>
<manifest>

<!-- TWRP lives in omnirom android-8.1 (not AOSP!) -->
    <remove-project name="platform/bootable/recovery" />
    <project path="bootable/recovery" name="android_bootable_recovery" remote="omnirom" revision="android-8.1" />


<!-- The following changes are no longer needed in 8.1 (only kept for reference) -->
<!-- =========================================================================== -->
    <!-- FBE libs (using AOSP tag android-8.0.0_r34) -->
        <!-- libkeymaster1.so -> libkeymaster_portable.so and libkeymaster_staging.so -->
        <!--
        <remove-project name="platform/system/keymaster" />
        <remove-project name="platform/system/security" />
        <project path="system/keymaster" name="platform/system/keymaster" remote="aosp" revision="refs/tags/android-8.0.0_r34" />
        <project path="system/security" name="platform/system/security" remote="aosp" revision="refs/tags/android-8.0.0_r34" />
        -->

        <!-- weaver -->
             <!-- TeamWin/.repo/AOSP is just a staging directory -->
        <!--
        <project path="TeamWin/.repo/AOSP/hardware/interfaces" name="platform/hardware/interfaces" remote="aosp" revision="refs/tags/android-8.0.0_r34" >
            <linkfile src="weaver" dest="hardware/interfaces/weaver" />
        </project>
        -->

        <!-- libkeyutils.so -->
             <!-- TeamWin/.repo/AOSP is just a staging directory -->
        <!--
        <project path="TeamWin/.repo/AOSP/system/core" name="platform/system/core" remote="aosp" revision="refs/tags/android-8.0.0_r34" >
            <linkfile src="libkeyutils" dest="system/core/libkeyutils" />
        </project>
        -->
<!-- =========================================================================== -->


<!-- The following directories are actually needed from android_frameworks_base (for FBE decryption)
     * frameworks/base/core/java/android/content   (~4MB)
     * frameworks/base/core/java/android/security  (<1MB)
     not only is it not worth syncing a 1GB repo for 4 to 5MB for me, the added dependencies make
     the minimal manifest unworkable.
     So for those that do want to sync frameworks/base but don't want the build to break (eg framworks/support),
     sync it to the staging are and only link the needed directories.
-->
    <project path="TeamWin/.repo/frameworks/base" name="android_frameworks_base" remote="omnirom" revision="android-8.1" clone-depth="1" >
        <linkfile src="core/java/android/content" dest="frameworks/base/core/java/android/content" />
        <linkfile src="core/java/android/security" dest="frameworks/base/core/java/android/security" />
    </project> />


<!-- Custom busybox no longer needed, but will keep here for reference -->
    <!-- <project path="external/busybox" name="TeamWin/android_external_busybox" remote="github" revision="android-8.0" /> -->

<!-- Use OmniROM busybox -->
    <project path="external/busybox" name="android_external_busybox" remote="omnirom" revision="android-8.1" />

</manifest>