rebuild aapt2 troubles

[jcbinf]

I cannot figure out aapt2 rebuild

Following as closely as I can the process in Internal.md (file is perhaps a bit out of sync?):
using android-14.0.0_r54, as a test builds fine with lunch aosp_arm64-ap2a-eng`, (not trunk_staging)

then:

git remote add origin [email protected]:iBotPeaches/platform_frameworks_base.git
git fetch origin -v
but then this seemed appropriate (not origin/master):
git checkout origin/apktool-2.10.x

but then
m aapt2
results in:
error: frameworks/base/api/Android.bp:99:9: variable "select" is not set

I am noob and way out of my depth. what am I doing wrong? Looks like build system versionitis?

I have tried checking out many, many different dates and aosp releases to try and find compatible with no success at all.

Some tip or just one working setup, if you please to get me going.

[iBotPeaches]

Hmm responding from my phone. Generally this is a pita. I know most times I make a new release, I have to rebase my frameworks/base repo and align to that tag.