-TEXMFSYSCONFIG /opt/texlive/2018/texmf-config
-TEXMFSYSVAR /opt/texlive/2018/texmf-var
-TEXMFVAR ~/.local/share/texlive/2018/texmf-var
+TEXMFSYSCONFIG /opt/texlive/2020/texmf-config
+TEXMFSYSVAR /opt/texlive/2020/texmf-var
+TEXMFVAR ~/.local/share/texlive/texmf-var