Hi, this is my first post to this mailinglist. I am no native speaker... if something sound somehow ... I will try to give my best.... ;) I am using GENTOO Linux, which compiles everything on the target instead of pulling ready compiled, binary packages into the system. I did a fresh install of Texlive 2020 via the package-manager "emerge". On Gentoo this is handled via a "virtual package", which can be configured beforehand to include or exclude certain parts. I choose to get the HUGE package (incluing LaTeX, ConTeXt, plainTeX and others). After the installation I tried to typeset examples of a LaTeX- and a plain TeX document, which works out of the box. Then I tried a ConTeXt document and it fails: context somefile.tex gave me: mtxrun | unknown script 'context.lua' or 'mtx-context.lua' . While searching the internet I found, that one has to run mtxrun --generate in advance. Doing so mtxrun starts to index my whole harddisk starting with my $HOME, from which I started it. It reports A LOT of "confusing file"s.... I searched the installed TeXlive installation for context.lua and mtx-context.lua -- they were installed and not "totally" missing. So I tried/guessed to run mtxrun --generate /usr/share/texmf-dist /usr/share/texlive-site and the file under $HOME were no longer indexed. context somefile.tex gave me the above mentioned error still, though. It "feels" like context does not respect setting made via the configuration settings under /etc/texmf... So I "hacked" (really, it was a crude hack/idea...nothing more) TEXMF and inserted export TEXMF=/usr/share/texmf-dist:/usr/share/texlive-site into my shells RC-file, restarted the shell and now context somefile.tex "worked"...: Each time it seems to re-index parts of ???, reports a lot of "confusing file"s but creates a valid looking pdf. I think, the package setup provided by GENTOO has a problem I want to help to fix that...but I have no clue, what the real culprit is here... Setting TEXMF this way feels like a random and accidentally working hack and I already feel the next problem raising up at the horizon... Some additional problems: tlmgr does not work mtxrun partially does not find its own modules mtxrun --variables lists a LOT of unset environment variables ... It looks like some basic and fundamental "initial" environment variable is missing. But I need a knowledgeable guru before I am able to get nearer to the root of the culprit. Thank you very much in advance for any help offered! \cheers Meino