[Tex/LaTex] Can’t locate TeXLive/TLConfig.pm in @INC

perltlmgr

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.

Best Answer

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.

UPDATE:

Log4perl is definitely no longer required. See comments.

Original Answer

For others running into the same issue but on a Mac:

Install perl via brew:

brew install perl

Use cpan to install the necessary perl packages:

Open cpan and select yes if necessary to setup the config automatically:

cpan

Then install any packages mentioned in your error logs, you may need to install and retry several times to figure out all of the packages you need.

In my case these packages fixed the error messages:

install Log::Log4perl
install Log::Dispatch::File
install YAML::Tiny
install File::HomeDir

Catalina Update

If the installation fails with an error message that sounds like a permissions issue, that may be due to security changes in Catalina. In that case, try forcing the installation:

cpan -fi \
  Log::Log4perl \
  Log::Dispatch::File \
  YAML::Tiny \
  File::HomeDir \
  Unicode::GCString

[Tex/LaTex] Can’t locate Algorithm/Diff.pm in @INC (you may need to install the Algorithm::Diff module)

Install the Algorithm::Diff package from Perl's CPAN package repository. You can do this by running the following command.

perl -MCPAN -e "install Algorithm::Diff"

Best Answer

Related Solutions

[Tex/LaTex] latexindent: Can’t locate Log/Log4perl.pm in @INC (you may need to install the Log::Log4perl module)

UPDATE:

Original Answer

Catalina Update

[Tex/LaTex] Can’t locate Algorithm/Diff.pm in @INC (you may need to install the Algorithm::Diff module)

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