This is on Fatdog Linux 7.20 or thereabouts. Kind of like Puppy.

Here goes what I specified as exports before running the tool - I'm trying to have a short command-line so I set environment variables for the install. I read the directions how to set all these but it still keeps the texmfhome environment variable as ~/root. I don't want this. I have a hard-drive with 700GB free and I want ALL of the TexLive distribution stored there and only there. I went to great pains to set all the variables and read the documentation. The installer is apparently ignoring one of the INSTALL_ variables. I'll show what I set here, maybe someone can tell what is going on as I cannot.

TEXLIVE_INSTALL_PREFIX=/aufs/devsave/TexLive
TEXLIVE_INSTALL_TEXDIR=/aufs/devsave/TexLive/2022
TEXLIVE_INSTALL_TEXUSERDIR=/aufs/devsave/TexLive/2022 (It ignores this too, the variable seems to not even exist)
TEXLIVE_INSTALL_TEXMFHOME=/aufs/devsave/TexLive/2022/texmf-home
TEXLIVE_INSTALL_TEXMFSYSCONFIG=/aufs/devsave/TexLive/2022/texmf-sysconfig
TEXLIVE_INSTALL_TEXMFCONFIG=/aufs/devsave/TexLive/2022/texmf-config
TEXLIVE_INSTALL_TEXMFSYSVAR=/aufs/devsave/TexLive/2022/texmf-sysvar
TEXLIVE_INSTALL_TEXMFVAR=/aufs/devsave/TexLive/2022/texmf-var

and I also had to set the temp environment variables to use temp on the 700GB drive (I don't have any real room left on usr and home, which
I don't like anyway). As long as you set the paths you're using, it's fine to ignore traditional directories. The path takes care of it all.

set TEMP=/aufs/devsave/temp
set TMP=/aufs/devsave/temp
set TMPDIR=/aufs/devsave/temp

It correctly used the above temp directory thank God.

But it lists the variables on the log file as follows, notice the error for TEXMFHOME, and there is
no TEXUSERDIR output to the log:

Settings:
TEXDIR: "/aufs/devsave/TexLive/2022"
TEXMFCONFIG: "/aufs/devsave/TexLive/2022/texmf-config"
TEXMFHOME: "~/texmf"
TEXMFLOCAL: "/aufs/devsave/TexLive/texmf-local"
TEXMFSYSCONFIG: "/aufs/devsave/TexLive/2022/texmf-sysconfig"
TEXMFSYSVAR: "/aufs/devsave/TexLive/2022/texmf-sysvar"
TEXMFVAR: "/aufs/devsave/TexLive/2022/texmf-var"

I'm tired of repeating this installation, I need to what is going on if someone can figure out what I'm not understanding
about the process. I followed the helpfiles.

Why does the program not install per the installation help files?