bug#37013: LyX can not find refstyle.sty

[sirgazil via Bug reports for GNU Guix]

Efraim, thanks for those changes, they fixed some bugs.

However, I still see many errors related to ".sty" files (refstyle, hyperref, 
enumitem, etc.), and ".cls" files (scrbook, scrartcl, etc.) not found when I 
try to open and view (Ctrl+R) the documents listed in LyX Help menu, and my own 
documents. When I install LyX, I would expect those help documents to work 
without errors.