Building of r-cran-prophet failed

[Andreas Tille <andreas@an3as.eu>]

Hi,

I injected r-cran-prophet packaging[1] into Salsa Git after two users in
r-pkg BoF at DebConf were asking for it.  The preconditions
r-cran-extradistr is freshly uploaded to new and the other predependency
r-cran-rstan which in turn depends from r-cran-stanheaders are in Git
and since some time in new queue.  When I build r-cran-prophet with these
package it happens that I get a build error:

...
Compiling model (this will take a minute...)
Writing model to: /build/r-cran-prophet-0.3.0.1/debian/r-cran-prophet/usr/lib/R/site-library/prophet/libs
Compiling using binary: /usr/lib/R/bin
Error in rstan::stan_model(stanc_ret = model.stanc, model_name = "prophet_model") : 
  Boost not found; call install.packages('BH')
* removing '/build/r-cran-prophet-0.3.0.1/debian/r-cran-prophet/usr/lib/R/site-library/prophet'
dh_auto_install: R CMD INSTALL -l /build/r-cran-prophet-0.3.0.1/debian/r-cran-prophet/usr/lib/R/site-library --clean . "--built-timestamp='Sun, 29 Jul 2018 11:55:03 +0200'" returned exit code 1
make: *** [debian/rules:4: binary] Error 2
...


I confirm that r-cran-bh is installed via Build-Depends which in
turned installed 

# dpkg --get-selections | grep boost
libboost-dev:amd64                              install
libboost-filesystem1.62.0:amd64                 install
libboost-iostreams1.62.0:amd64                  install
libboost-system1.62.0:amd64                     install
libboost1.62-dev:amd64                          install


Has anybody a clue why this does not build as expected?

Kind regards

       Andreas.

[1] https://salsa.debian.org/r-pkg-team/r-cran-prophet

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