[tex-live] dropped fontspec dependency ?

[jfbu]

Hi,

during Summer I update software only about once a month, having
rare periodes of internet access

today I was surprised that updating texlive resulted in dropping
fontspec, polyglossia, unicode-math...

I surmise something has been changed into dependencies of latex-recommended
or like collections.

I don't have time to compare to earlier status to figure out quickly 
which collection to now additionally enable if I do want to be able
to use fontspec+lualatex/xelatex. Can you help telling me?

[edit by myself:] seems what I want is collection-unicodetex.

my status is
$ tlmgr info collections
tlmgr: package repository http://mirrors.ircam.fr/pub/CTAN/systems/texlive/tlnet (verified)
i collection-basic: Essential programs and files
  collection-bibtexextra: BibTeX additional styles
i collection-binextra: TeX auxiliary programs
i collection-context: ConTeXt and packages
i collection-fontsextra: Additional fonts
i collection-fontsrecommended: Recommended fonts
i collection-fontutils: Graphics and font utilities
  collection-formatsextra: Additional formats
  collection-games: Games typesetting
i collection-genericextra: Generic additional packages
i collection-genericrecommended: Generic recommended packages
i collection-htmlxml: HTML/SGML/XML support
i collection-humanities: Humanities packages
  collection-langafrican: African scripts
  collection-langarabic: Arabic
  collection-langchinese: Chinese
  collection-langcjk: Chinese/Japanese/Korean (base)
i collection-langcyrillic: Cyrillic
  collection-langczechslovak: Czech/Slovak
i collection-langenglish: US and UK English
i collection-langeuropean: Other European languages
i collection-langfrench: French
i collection-langgerman: German
i collection-langgreek: Greek
  collection-langindic: Indic scripts
i collection-langitalian: Italian
  collection-langjapanese: Japanese
  collection-langkorean: Korean
  collection-langother: Other languages
  collection-langpolish: Polish
  collection-langportuguese: Portuguese
  collection-langspanish: Spanish
i collection-latex: LaTeX fundamental packages
i collection-latexextra: LaTeX additional packages
i collection-latexrecommended: LaTeX recommended packages
i collection-luatex: LuaTeX packages
i collection-mathextra: Mathematics packages
i collection-metapost: MetaPost and Metafont packages
  collection-music: Music packages
  collection-omega: Omega packages
i collection-pictures: Graphics, pictures, diagrams
i collection-plainextra: Plain TeX packages
i collection-pstricks: PSTricks
  collection-publishers: Publisher styles, theses, etc.
i collection-science: Natural and computer sciences
  collection-texworks: TeXworks editor; TL includes only the Windows binary
  collection-unicodetex: Packages for native Unicode TeX engines
  collection-wintools: Windows-only support programs
i collection-xetex: XeTeX and packages

As you can see, this year for some reason I did not install the full TeX-Live.

Today's update produced log containing this: (I was using on Mac OS the TeX Live Utility whose latest version 1.26 I wanted to check, rather than command line tlmgr)

2016-08-07 08:24:05 +0000 Notice tlu_ipctask[3773]	Deleting xltxtra
2016-08-07 08:24:06 +0000 Notice tlu_ipctask[3773]	Deleting xunicode
2016-08-07 08:24:06 +0000 Notice tlu_ipctask[3773]	Deleting mathspec
2016-08-07 08:24:07 +0000 Notice tlu_ipctask[3773]	Deleting polyglossia
2016-08-07 08:24:07 +0000 Notice tlu_ipctask[3773]	Deleting fontspec
2016-08-07 08:24:08 +0000 Notice tlu_ipctask[3773]	Deleting unicode-math
2016-08-07 08:24:09 +0000 Notice tlu_ipctask[3773]	Deleting euenc
[...]
2016-08-07 08:25:19 +0000 Notice tlu_ipctask[3773]	Updating collection-binextra
2016-08-07 08:25:20 +0000 Notice tlu_ipctask[3773]	Updating collection-latexrecommended
2016-08-07 08:25:21 +0000 Notice tlu_ipctask[3773]	Updating collection-mathextra
2016-08-07 08:25:21 +0000 Notice tlu_ipctask[3773]	Updating collection-xetex

Ok, self-answering, I see I need to add collection-unicodetex.

Has this been discussed somewhere ? I see no thread -- oh sorry I found this just now

http://tug.org/mailman/htdig/tex-live/2016-July/039081.html

Well, sorry for noise, but doing it nevertheless to make worthwhile my investigation ;-)

Best

Jean-François