Trying to get
l3color.styI tried running
sudo latex l3.inswhich unpacked various files, but not packages. Examining
l3.logthere are lines
Processing file l3color.dtx (package) -> expl3-code.texfor every package line.
This looks like the package is being written onto the file expl3-code.tex . Indeed the final version of this file looks like it is really l3deprecation.sty under the wrong name; this being the last package extracted.
My LaTeX versions are as follows
LaTeX2e <2020-10-01> patch level 4 with
L3 programming layer <2021-05-27>and
Copyright (C) 2011,2012,2014-2021 The LaTeX Project which has lines like:
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