Failure to load package: xslt

[Kevin Snyder]

I have attempted to load the package "xslt" for my Shiny app, but it appears that "libexslt" is required and not found.  I've copy and pasted the error statement from the deploy log here:

#############################################################

[2018-08-17T18:50:52.906407745+0000] Building R package: xslt (1.3)

/mnt/packages/build /mnt

* installing to library �/opt/R/3.5.1/lib/R/library�

* installing *source* package �xslt� ...

** package �xslt� successfully unpacked and MD5 sums checked

Package libexslt was not found in the pkg-config search path.

Perhaps you should add the directory containing `libexslt.pc'

to the PKG_CONFIG_PATH environment variable

No package 'libexslt' found

Using PKG_CFLAGS=-I/usr/include/libxml2

Using PKG_LIBS=-lexslt -lxslt -lxml2

------------------------- ANTICONF ERROR ---------------------------

Configuration failed because libexslt was not found. Try installing:

 * deb: libxslt1-dev (Debian, Ubuntu, etc)

 * rpm: libxslt-devel (Fedora, CentOS, RHEL)

 * csw: libxslt_dev (Solaris)

If libexslt is already installed, check that 'pkg-config' is in your

PATH and PKG_CONFIG_PATH contains a libexslt.pc file. If pkg-config

is unavailable you can set INCLUDE_DIR and LIB_DIR manually via:

R CMD INSTALL --configure-vars='INCLUDE_DIR=... LIB_DIR=...'

--------------------------------------------------------------------

ERROR: configuration failed for package �xslt�

* removing �/opt/R/3.5.1/lib/R/library/xslt�

#############################################################

Is it possible for the shinyapps.io environment to be updated to include the library "libexslt" so that the R package "xslt" can be properly installed?

[Joshua Spiewak]

This is covered in the System Packages section of the documentation.