Hello Luigi,

you asked:
> On Fri, Aug 27, 2021 at 10:35 AM Rainer J.H. Brandt via ntg-context <
> ntg-context@ntg.nl> wrote:
>
> > Dear experts,
> >
> > I want to use ConTeXt MkIV as supplied by TeXlive 2021.
> > After installation, I ran "mtxrun --generate".
> > I also tried "context --generate".
> > Both create output in the wrong place.
> >
> > The TeXlive documentation says that ConTeXt uses TEXMFCACHE,
> > which uses the default $TEXMFSYSVAR;$TEXMFVAR in my texmf.cnf.
> > My TEXMFSYSVAR is /var/opt/texlive, but ConTeXt doesn't use it.
> > Instead, it creates /opt/texmf-var and creates its output there.
> > I don't understand why it used that path; I've never used or configured
> > it.
> >
> > How can I convice ConTeXt to use TEXMFSYSVAR?
> > [...]
>
> What does
> $> tlmgr conf
> say ?

The output is appended below and looks reasonable.  In particular, it shows
that I installed under /opt/local/share/texlive and doesn't mention the
"mtxrun --generate" output path /opt/texmf-var at all.

Please note that I don't use tlmgr and also that I didn't use the TeX Live
installer.  I built the binaries from their sources and then installed
the rest from the texmf archive file. I use other engines on a daily basis,
mostly pdflatex, and they work flawlessly.

Thanks, Rainer