Hi Dirk,
One side observation: r-cran debian now seems to be in Ubuntu 20.10 Universe so I don't need to add the repo any more. Here is a reproducible example that fails with the latest r-cran-rcppparallel but works when I manually install the source package: require(rstan) stancode <- 'data {real y_mean;} parameters {real y;} model {y ~ normal(y_mean,1);}' mod <- stan_model(model_code = stancode, verbose = TRUE) TRANSLATING MODEL '16a540c6086086816528e4524def24d9' FROM Stan CODE TO C++ CODE NOW. successful in parsing the Stan model '16a540c6086086816528e4524def24d9'. COMPILING THE C++ CODE FOR MODEL '16a540c6086086816528e4524def24d9' NOW. OS: x86_64, linux-gnu; rstan: 2.21.2; Rcpp: 1.0.5; inline: 0.3.16 Error in system.file("lib", .Platform$r_arch, package = "RcppParallel", : no file found I also still have a plotly::ggplot(ggplot output) that fails to render unless I install plotly from install.packages(...). Frank http://fharrell.com http://biostat.mc.vanderbilt.edu/FrankHarrell Twitter: @f2harrell ---- On Sun, 25 Oct 2020 12:17:53 -0500 Dirk Eddelbuettel <e...@debian.org> wrote ---- Frank, (Your mail came in an html variant my default mail reader cannot read so no quoted reply.) We would need a more standardized reproducible example to help you further. Dirk -- https://dirk.eddelbuettel.com | @eddelbuettel | mailto:e...@debian.org _______________________________________________ R-SIG-Debian mailing list R-SIG-Debian@r-project.org https://stat.ethz.ch/mailman/listinfo/r-sig-debian