TeX - LaTeX Asked by ysalmon on July 12, 2021
When invoking tlgmr, especially in the course of a distribution upgrade, it fails very early with a PERL error Can't locate TeXLive/TLConfig.pm in @INC followed by a list for @INC in the following form : @INC contains: /2020/texmf-dist/scripts/texlive /2020/tlpkg etc.
Setting the PERL5LIB to the appropriate folder allows to get a little further but things still fail with
kpathsea: configuration file texmf.cnf not found in these directories: /2020/bin/x86_64-linux etc.
This happens when one invokes tlmgr by specifying a relative path to it that does not begin with ./, eg. user@machine:/opt/texlive$ 2020/bin/x86_64-linux/tlmgr update --self --all.
For some (PERL-related ?) reason, this makes tlmgr search for things under /2020/.
Use user@machine:/opt/texlive$ ./2020/bin/x86_64-linux/tlmgr update --self --all instead.
Correct answer by ysalmon on July 12, 2021
According to the Arch Wiki of TeX Live, tlmgr script in TEXMFDIST is broken.
The method to fix is to edit TEXMFDIST/scripts/texlive/tlmgr.pl and replace $Master = "$Master/../.."; with $Master = "${Master}/../../..";.
Or for Arch-based Linux distro user, use tllocalmgr instead.
Answered by Guang-Le Du on July 12, 2021
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