reverse dependency checks

There are some nice tools to automate reverse dependency checks, but for a
large package the real issue is the envirionment.  The description of the
crandalf site on github has a nice summary.  One package uses a cryto
libraries (oops, install those), another uses some latex macros I've never
heard of, etc.    In any case, I am seeing some failures in my reverse
checks for survival that I'm not sure how to fix.   If anyone has a hint or
two I'd be grateful.

1. A half dozen fail with "graphics API mismatch"

2. Over a dozen have a latex failure of
! pdfTeX error (\pdfsetmatrix): Unrecognized format..
\AtBegShi at Output ...ipout \box \AtBeginShipoutBox
                                                   \fi \fi

A check of kpsewhich shows I have all the packages, and I don't see a
pattern in the .tex files at the point of failure.

Terry T.

Am Donnerstag, 18. Februar 2021, 19:58:09 CET schrieb Therneau, Terry M.,

checks for survival that I'm not sure how to fix.   If anyone has a hint
or two I'd be grateful.

1. A half dozen fail with "graphics API mismatch"

Such error messages could occur if visual diffs (of SVG plots) are run 

with
R > 4.0 (i.e. R-devel) where the reference files were generated with R <=
4.0. This is described in

  https://github.com/r-lib/vdiffr/issues/86

However the vdiffr tests are only run if you set the NOT_CRAN environment
variable, for example because you use devtools for running tests, see

  https://github.com/r-lib/vdiffr#testing-versus-monitoring

Kind regards,

Johannes

2. Over a dozen have a latex failure of
! pdfTeX error (\pdfsetmatrix): Unrecognized format..
\AtBegShi at Output ...ipout \box \AtBeginShipoutBox

                                                   \fi \fi

A check of kpsewhich shows I have all the packages, and I don't see a
pattern in the .tex files at the point of failure.

Terry T.