Created attachment 530666 [details] MWE latex document, then pdflatex build log, then emerge --info I installed =dev-texlive/texlive-mathscience-2017, which includes the LaTeX package ``textgreek`` for type-setting greek characters in text mode. Trying to build a document using ``\usepackage{textgreek}`` in the preamble I get the error "! Package textgreek Error: Cannot find the file lgrenc.def." when building with pdflatex. It seems that the ``greek-fontenc`` tex package is also required in order to use textgreek. I installed =dev-texlive/texlive-langgreek-2017 (which contains greek-fontenc) and now the document builds properly. Perhaps texlive-langgreek should be a dependency of texlive-mathscience?
reopen if still occurs.