Recently I received an email from CRAN, from which I learned about an accident
 related to TinyTeX . CRAN requested me to make a change to avoid
 such accidents in the future, and I’d like to mention this change and also
 announce another upcoming change in this post.
Preventing accidental installation of TinyTeX
 For the sake of convenience, the R function tinytex::install_tinytex() would
 not ask for user’s confirmation before installing TinyTeX. I assume that users
 know what they are doing when calling this function, just like calling
 install.packages() would install R packages without confirmation. I knew this
 could be problematic since the beginning, because users might call this function
 inadvertently, and there is not a straightforward way to prevent the
 installation.
 I have enjoyed more than four years’ peace… until someone called this function
 somewhere in his/her package (presumably inadvertently since this is definitely
 against the CRAN policy), which installed TinyTeX on CRAN’s machines. What a
 horror story!
 In the next version of the R package tinytex , install_tinytex() will
 prevent the automatic installation in the following two cases:
-  The environment variable TINYTEX_PREVENT_INSTALLis set totrue. This
 gives the sysadmin a way to disable the installation altogether, and
 install_tinytex()will simply throw an error.
-  Another LaTeX distribution is detected. In this case, if the R session is
 interactive(), users will be asked if they want to continue the
 installation anyway; if the R session is not interactive,
 install_tinytex()will throw an error telling users that if they are sure
 they want to install TinyTeX anyway, they can use
 tinytex::install_tinytex(force = TRUE).
 I guess this change should not affect too many people, but it will affect
 existing users who install TinyTeX via install_tinytex() in a non-interactive
 R session (eg, via the command Rscript -e 'tinytex::install_tinytex() ) when
 there already exists a LaTeX distribution in the system. You would have to use
 the argument force = TRUE . That may be a minor inconvenience, but the gain is
 that there should be much fewer accidents like the one I mentioned above.
 If you want to check if this change affects you, you may install the dev version
 of tinytex now:
 remotes::install_github('yihui/tinytex')
 And see what happens to tinytex::install_tinytex() .
 If you have any feedback on this change, please feel free to let me know.
 Currently, I plan to submit the new version to CRAN next week.
Migrating to the rstudio org on Github
 We plan to migrate the two Github repositories,
 https://github.com/yihui/tinytex and
 https://github.com/yihui/tinytex-releases to the rstudio organization next
 week (May 16, 2022). That is, they will become
 https://github.com/rstudio/tinytex and
 https://github.com/rstudio/tinytex-releases , respectively. We hoped to migrate
 the two repositories from my personal account to rstudio to make it safer to
 build and install TinyTeX, and also easier to manage future contributions to
 this project.
 In theory, this should not affect anyone, because Github will automatically
 redirect the old links to the new ones, including links to the precompiled
 TinyTeX binaries in Github Releases. Anyway, I want to announce this in advance
 so that you can be better prepared. If you run into any problems with installing
 TinyTeX next week, please do us a favor file a
 report immediately. Thanks!
 This article is reprinted from: https://yihui.org/en/2022/05/tinytex-changes/
 This site is for inclusion only, and the copyright belongs to the original author.
