Loading `cmdstanr` takes a very long time (over 30 seconds) on macOS

[mattocci27]

Describe the bug Loading cmdstanr takes a very long time (over 30 seconds) on macOS. This duration is much longer compared to the loading times on Linux machines, where the package typically loads within just a few seconds.

Operating system macOS Sonoma 14.2

CmdStanR version number 0.7.0

To Reproduce

r$> system.time(library(cmdstanr))
This is cmdstanr version 0.7.0
- CmdStanR documentation and vignettes: mc-stan.org/cmdstanr
- CmdStan path: /Users/xxxxx/.cmdstan/cmdstan-2.33.1
- CmdStan version: 2.33.1
   user  system elapsed
  0.416   0.050  34.963

Additional context

r$> devtools::session_info()
─ Session info ─────────────────────────────────────────────────────────────────────────────────────────────────
 setting  value
 version  R version 4.3.2 (2023-10-31)
 os       macOS Sonoma 14.2
 system   aarch64, darwin20
 ui       X11
 language (EN)
 collate  en_US.UTF-8
 ctype    en_US.UTF-8
 tz       Asia/Shanghai
 date     2023-12-21
 pandoc   3.1.11 @ /opt/homebrew/bin/pandoc

─ Packages ─────────────────────────────────────────────────────────────────────────────────────────────────────
 package        * version date (UTC) lib source
 abind            1.4-5   2016-07-21 [1] CRAN (R 4.3.0)
 backports        1.4.1   2021-12-13 [1] CRAN (R 4.3.0)
 cachem           1.0.8   2023-05-01 [1] CRAN (R 4.3.0)
 callr            3.7.3   2022-11-02 [1] CRAN (R 4.3.0)
 checkmate        2.2.0   2023-04-27 [1] CRAN (R 4.3.0)
 cli              3.6.1   2023-03-23 [1] CRAN (R 4.3.0)
 cmdstanr       * 0.7.0   2023-12-21 [1] local
 colorspace       2.1-0   2023-01-23 [1] CRAN (R 4.3.0)
 crayon           1.5.2   2022-09-29 [1] CRAN (R 4.3.0)
 devtools         2.4.5   2022-10-11 [1] CRAN (R 4.3.0)
 digest           0.6.31  2022-12-11 [1] CRAN (R 4.3.0)
 distributional   0.3.2   2023-03-22 [1] CRAN (R 4.3.0)
 dplyr            1.1.2   2023-04-20 [1] CRAN (R 4.3.0)
 ellipsis         0.3.2   2021-04-29 [1] CRAN (R 4.3.0)
 fansi            1.0.4   2023-01-22 [1] CRAN (R 4.3.0)
 farver           2.1.1   2022-07-06 [1] CRAN (R 4.3.0)
 fastmap          1.1.1   2023-02-24 [1] CRAN (R 4.3.0)
 fs               1.6.2   2023-04-25 [1] CRAN (R 4.3.0)
 generics         0.1.3   2022-07-05 [1] CRAN (R 4.3.0)
 ggplot2          3.4.2   2023-04-03 [1] CRAN (R 4.3.0)
 glue             1.6.2   2022-02-24 [1] CRAN (R 4.3.0)
 gtable           0.3.3   2023-03-21 [1] CRAN (R 4.3.0)
 htmltools        0.5.7   2023-11-03 [1] CRAN (R 4.3.1)
 htmlwidgets      1.6.4   2023-12-06 [1] CRAN (R 4.3.1)
 httpuv           1.6.13  2023-12-06 [1] CRAN (R 4.3.1)
 knitr            1.43    2023-05-25 [1] CRAN (R 4.3.0)
 later            1.3.2   2023-12-06 [1] CRAN (R 4.3.1)
 lifecycle        1.0.3   2022-10-07 [1] CRAN (R 4.3.0)
 magrittr         2.0.3   2022-03-30 [1] CRAN (R 4.3.0)
 memoise          2.0.1   2021-11-26 [1] CRAN (R 4.3.0)
 mime             0.12    2021-09-28 [1] CRAN (R 4.3.0)
 miniUI           0.1.1.1 2018-05-18 [1] CRAN (R 4.3.0)
 munsell          0.5.0   2018-06-12 [1] CRAN (R 4.3.0)
 pillar           1.9.0   2023-03-22 [1] CRAN (R 4.3.0)
 pkgbuild         1.4.2   2023-06-26 [1] CRAN (R 4.3.0)
 pkgconfig        2.0.3   2019-09-22 [1] CRAN (R 4.3.0)
 pkgload          1.3.2   2022-11-16 [1] CRAN (R 4.3.0)
 posterior        1.4.1   2023-03-14 [1] CRAN (R 4.3.0)
 prettyunits      1.1.1   2020-01-24 [1] CRAN (R 4.3.0)
 processx         3.8.2   2023-06-30 [1] CRAN (R 4.3.0)
 profvis          0.3.8   2023-05-02 [1] CRAN (R 4.3.0)
 promises         1.2.1   2023-08-10 [1] CRAN (R 4.3.0)
 ps               1.7.5   2023-04-18 [1] CRAN (R 4.3.0)
 purrr            1.0.1   2023-01-10 [1] CRAN (R 4.3.0)
 R6               2.5.1   2021-08-19 [1] CRAN (R 4.3.0)
 Rcpp             1.0.10  2023-01-22 [1] CRAN (R 4.3.0)
 remotes          2.4.2   2021-11-30 [1] CRAN (R 4.3.0)
 rlang            1.1.1   2023-04-28 [1] CRAN (R 4.3.0)
 scales           1.2.1   2022-08-20 [1] CRAN (R 4.3.0)
 sessioninfo      1.2.2   2021-12-06 [1] CRAN (R 4.3.0)
 shiny            1.8.0   2023-11-17 [1] CRAN (R 4.3.1)
 stringi          1.7.12  2023-01-11 [1] CRAN (R 4.3.0)
 stringr          1.5.0   2022-12-02 [1] CRAN (R 4.3.0)
 tensorA          0.36.2  2020-11-19 [1] CRAN (R 4.3.0)
 tibble           3.2.1   2023-03-20 [1] CRAN (R 4.3.0)
 tidyselect       1.2.0   2022-10-10 [1] CRAN (R 4.3.0)
 urlchecker       1.0.1   2021-11-30 [1] CRAN (R 4.3.0)
 usethis          2.2.2   2023-07-06 [1] CRAN (R 4.3.0)
 utf8             1.2.3   2023-01-31 [1] CRAN (R 4.3.0)
 vctrs            0.6.3   2023-06-14 [1] CRAN (R 4.3.0)
 xfun             0.39    2023-04-20 [1] CRAN (R 4.3.0)
 xtable           1.8-4   2019-04-21 [1] CRAN (R 4.3.0)

 [1] /Library/Frameworks/R.framework/Versions/4.3-arm64/Resources/library

[andrjohns]

It looks like this can happen when cmdstanr is checking whether the current CmdStan installation is the latest version and you don't have internet access, or if you're on a corporate network or similar which blocks some GitHub requests.

To confirm whether this is the case for you, can you try running options("CMDSTANR_NO_VER_CHECK"=TRUE) before loading cmdstanr?

I'll open a PR to mitigate this now

[mattocci27]

It works, and thank you for the quick PR!