
So why can't LyX/XeTeX locate it? And why doesn't FontManager list it? (It does, however, list the standard XITS and STIX variants along with other TeX fonts.)


Stix2-type1 - Type1 versions of the STIX Two OpenType fonts The package description says that it indeed provides an OpenType version of STIX Two Math that therefore should work with XeTeX: OpenType/TrueType) as well in the document settings at LyX. I configured my document class (which is American Mathematical Society article, or amsart that is provided by LyX) to use the XeTeX typesetting engine (since I'm writing it in Hebrew), so I set the math font to be a non-TeX font (i.e. I used the following fontspec instruction for XeTeX at my LyX document preamble: \setmathfont instead and it worked as perfectly (I even considered dropping STIX Two Math for XITS Math because of that). The issue starts when I'm looking for the font STIX Two Math on my system, according to the description of the (following) package, it should be installed by texlive-fonts-extra. I'm using LyX as my editor, and selected XeTeX for typesetting Unicode characters with non-TeX fonts. I've installed all of TeX Live via texlive-full from the latest Debian Sid distribution.
