Dear All,
I have just upgraded to Debian stable 10 and rebuilt most of the R
packages.
I use the R backported packages from here
https://cran.r-project.org/bin/linux/debian/#debian-buster-testing

for the core system.
I encounter some issues when updating quantmod, tseries and forecast.
For instance, see the following

install.packages("tseries")
which finally fails with the following message

** byte-compile and prepare package for lazy loading
Error in dyn.load(file, DLLpath = DLLpath, ...) : unable to load shared object '/usr/local/lib/R/site-library/curl/libs/curl.so':
 /usr/lib/x86_64-linux-gnu/libcurl.so.4: version `CURL_OPENSSL_3' not found 
(required by /usr/local/lib/R/site-library/curl/libs/curl.so)
Calls: <Anonymous> ... asNamespace -> loadNamespace -> library.dynam -> dyn.load
Execution halted
ERROR: lazy loading failed for package ‘tseries’
* removing ‘/usr/local/lib/R/site-library/tseries’
* restoring previous ‘/usr/local/lib/R/site-library/tseries’

Now I have curl44 installed on my system because that is what Debian
prrovides me with (and for the overwhelming majority of my packages it
is not a problem).
Please find below my sessionInfo().
Any suggestion is appreciated.
Cheers

Lorenzo


sessionInfo()
R version 3.6.0 (2019-04-26)
Platform: x86_64-pc-linux-gnu (64-bit)
Running under: Debian GNU/Linux 10 (buster)

Matrix products: default
BLAS:   /usr/lib/x86_64-linux-gnu/blas/libblas.so.3.8.0
LAPACK: /usr/lib/x86_64-linux-gnu/lapack/liblapack.so.3.8.0

locale:
[1] LC_CTYPE=en_GB.UTF-8 LC_NUMERIC=C [3] LC_TIME=en_GB.UTF-8 LC_COLLATE=en_GB.UTF-8 [5] LC_MONETARY=en_GB.UTF-8 LC_MESSAGES=en_GB.UTF-8 [7] LC_PAPER=en_GB.UTF-8 LC_NAME=C [9] LC_ADDRESS=C LC_TELEPHONE=C [11] LC_MEASUREMENT=en_GB.UTF-8 LC_IDENTIFICATION=C
attached base packages:
[1] stats graphics grDevices utils datasets methods base
loaded via a namespace (and not attached):
[1] compiler_3.6.0 tools_3.6.0

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