[tex-live] how many bytes in a scheme or collection ?

[jfbu]

Hi,

Is there anyway to query tlmgr about how many bytes packages
in a given collection amount to?

Already, simply the total of the tar.xz sizes will be
informative enough to me

I discover now that the C<ollections> menu of install-tl has
an informative indication of the total size of a custom
install. But individual collections do not indicate their
shares, one has to deduce it from selecting and deselecting.

It would be nice to have the info displayed individually to
start with.

And then it would be nice if later on tlmgr could provide this
too at a later stage, when one hesitates about installing an
additional whole collection via tlmgr.

Is there some way already to get
that info ?

Best

Jean-François