Portability seems broken

Hi,

The documentation claims that TinyTeX is portable, but that doesn't seem to be the case.

On Linux, it can be reproduced like this.

1. Install TinyTeX"

wget -qO- "https://yihui.name/gh/tinytex/tools/install-unx.sh" | sh

2. Find all occurrences of the user's home directory

grep -R --exclude="*.log" ${HOME} .TinyTeX/

In a portable installation, you would expect that there are no hardcoded paths. Yet, there are:

.TinyTeX/texmf-dist/web2c/updmap.cfg:# Generated by /home/michel/.TinyTeX/bin/x86_64-linux/tlmgr on Fri Jul 12 07:41:22 2019
.TinyTeX/texmf-dist/web2c/fmtutil.cnf:# Generated by /home/michel/.TinyTeX/bin/x86_64-linux/tlmgr on Fri Jul 12 07:41:22 2019
.TinyTeX/tlpkg/texlive.profile:tlpdbopt_sys_bin /home/michel/bin
.TinyTeX/tlpkg/texlive.tlpdb:depend opt_sys_bin:/home/michel/bin
.TinyTeX/tlpkg/tlpobj/00texlive.installation.tlpobj:depend opt_sys_bin:/home/michel/bin
.TinyTeX/texmf-var/fonts/map/pdftex/updmap/pdftex.map:% /home/michel/.TinyTeX/texmf-var/fonts/map/pdftex/updmap/pdftex_dl14.map:
.TinyTeX/texmf-var/fonts/map/pdftex/updmap/pdftex.map:% /home/michel/.TinyTeX/texmf-var/web2c/updmap.log
.TinyTeX/texmf-var/fonts/map/pdftex/updmap/pdftex_dl14.map:% /home/michel/.TinyTeX/texmf-var/fonts/map/pdftex/updmap/pdftex_dl14.map:
.TinyTeX/texmf-var/fonts/map/pdftex/updmap/pdftex_dl14.map:% /home/michel/.TinyTeX/texmf-var/web2c/updmap.log
.TinyTeX/texmf-var/fonts/map/pdftex/updmap/pdftex_ndl14.map:% /home/michel/.TinyTeX/texmf-var/fonts/map/pdftex/updmap/pdftex_ndl14.map:
.TinyTeX/texmf-var/fonts/map/pdftex/updmap/pdftex_ndl14.map:% /home/michel/.TinyTeX/texmf-var/web2c/updmap.log
.TinyTeX/texmf-var/fonts/map/dvips/updmap/psfonts.map:% /home/michel/.TinyTeX/texmf-var/fonts/map/dvips/updmap/psfonts_t1.map:
.TinyTeX/texmf-var/fonts/map/dvips/updmap/psfonts.map:% /home/michel/.TinyTeX/texmf-var/web2c/updmap.log
.TinyTeX/texmf-var/fonts/map/dvips/updmap/builtin35.map:% /home/michel/.TinyTeX/texmf-var/fonts/map/dvips/updmap/builtin35.map:
.TinyTeX/texmf-var/fonts/map/dvips/updmap/builtin35.map:% /home/michel/.TinyTeX/texmf-var/web2c/updmap.log
.TinyTeX/texmf-var/fonts/map/dvips/updmap/psfonts_pk.map:% /home/michel/.TinyTeX/texmf-var/fonts/map/dvips/updmap/psfonts_pk.map:
.TinyTeX/texmf-var/fonts/map/dvips/updmap/psfonts_pk.map:% /home/michel/.TinyTeX/texmf-var/web2c/updmap.log
.TinyTeX/texmf-var/fonts/map/dvips/updmap/ps2pk.map:% /home/michel/.TinyTeX/texmf-var/fonts/map/dvips/updmap/ps2pk.map:
.TinyTeX/texmf-var/fonts/map/dvips/updmap/ps2pk.map:% /home/michel/.TinyTeX/texmf-var/web2c/updmap.log
.TinyTeX/texmf-var/fonts/map/dvips/updmap/psfonts_t1.map:% /home/michel/.TinyTeX/texmf-var/fonts/map/dvips/updmap/psfonts_t1.map:
.TinyTeX/texmf-var/fonts/map/dvips/updmap/psfonts_t1.map:% /home/michel/.TinyTeX/texmf-var/web2c/updmap.log
.TinyTeX/texmf-var/fonts/map/dvips/updmap/download35.map:% /home/michel/.TinyTeX/texmf-var/fonts/map/dvips/updmap/download35.map:
.TinyTeX/texmf-var/fonts/map/dvips/updmap/download35.map:% /home/michel/.TinyTeX/texmf-var/web2c/updmap.log
.TinyTeX/texmf-var/fonts/map/dvipdfmx/updmap/kanjix.map:% /home/michel/.TinyTeX/texmf-var/fonts/map/dvipdfmx/updmap/kanjix.map:
.TinyTeX/texmf-var/fonts/map/dvipdfmx/updmap/kanjix.map:% /home/michel/.TinyTeX/texmf-var/web2c/updmap.log
Binary file .TinyTeX/texmf-var/web2c/metafont/mf.base matches
Binary file .TinyTeX/texmf-var/web2c/tex/tex.fmt matches

Of which these are probably relevant:

.TinyTeX/tlpkg/texlive.profile:tlpdbopt_sys_bin /home/michel/bin
.TinyTeX/tlpkg/texlive.tlpdb:depend opt_sys_bin:/home/michel/bin
.TinyTeX/tlpkg/tlpobj/00texlive.installation.tlpobj:depend opt_sys_bin:/home/michel/bin
Binary file .TinyTeX/texmf-var/web2c/metafont/mf.base matches
Binary file .TinyTeX/texmf-var/web2c/tex/tex.fmt matches

3. Pack .TinyTeX

tar czf /tmp/tinytex.tar.gz .TinyTeX

4. As another user, unpack .TinyTeX

tar xzf /tmp/tinytex.tar.gz

5. Execute tlmgr path add

.TinyTeX/bin/x86_64-linux/tlmgr path add

Which results in:

Can't locate TeXLive/TLConfig.pm in @INC (you may need to install the TeXLive::TLConfig module) (@INC contains: /.TinyTeX/texmf-dist/scripts/texlive /.TinyTeX/tlpkg /etc/perl /usr/local/lib/x86_64-linux-gnu/perl/5.26.1 /usr/local/share/perl/5.26.1 /usr/lib/x86_64-linux-gnu/perl5/5.26 /usr/share/perl5 /usr/lib/x86_64-linux-gnu/perl/5.26 /usr/share/perl/5.26 /usr/local/lib/site_perl /usr/lib/x86_64-linux-gnu/perl-base) at .TinyTeX/bin/x86_64-linux/tlmgr line 100.
BEGIN failed--compilation aborted at .TinyTeX/bin/x86_64-linux/tlmgr line 100.

6. Test TinyTeX

mkdir -p rpackages
echo ".libPaths('~/rpackages')" > .Rprofile
R --silent -e 'install.packages("tinytex")'
R --silent -e 'tinytex::tinytex_root()'

Results in:

> tinytex::tinytex_root()
[1] ""

Session Info

> xfun::session_info(tinytex)
Error in xfun::session_info(tinytex) : object 'tinytex' not found
Execution halted

---

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Reproduce the issue using tools/install-unx.sh, the .TinyTeX/bin/x86_64-linux/tlmgr path-add command, and the R tinytex::tinytex_root() check. Inspect the hardcoded paths in texlive.profile, texlive.tlpdb, 00texlive.installation.tlpobj, and the reported binary files. Done means a packed installation can be used by another user without the original home-directory paths and is detected by tinytex::tinytex_root().