[R] Warning in install.packages : converting NULL pointer to R NULL

[Duncan Murdoch]

That looks like an RStudio message.  Do you get it if you run 
install.packages() in command line R?

Duncan Murdoch

On 08/05/2020 8:07 a.m., Rui Barradas wrote:
> Hello,
> 
> R 4.0.0 on Ubuntu 20.04, sessionInfo() below.
> 
> Since I updated to R 4.0 that every time I try to install a package with
> install.packages() the warning in the title shows up at the end, be the
> installation successful or not. If it is successful, the package loads
> with no problems, so I'm not very worried but it isn't normal (expected)
> behavior, is it?
> 
> Here is a run of install.packages().
> 
> 
> install.packages('cowplot')
> Installing package into ‘/usr/local/lib/R/site-library’
> (as ‘lib’ is unspecified)
> trying URL 'https://cloud.r-project.org/src/contrib/cowplot_1.0.0.tar.gz'
> Content type 'application/x-gzip' length 1275585 bytes (1.2 MB)
> ==================================================
> downloaded 1.2 MB
> 
> * installing *source* package ‘cowplot’ ...
> ** package ‘cowplot’ successfully unpacked and MD5 sums checked
> ** using staged installation
> ** R
> ** inst
> ** byte-compile and prepare package for lazy loading
> ** help
> *** installing help indices
> *** copying figures
> ** building package indices
> ** installing vignettes
> ** testing if installed package can be loaded from temporary location
> ** testing if installed package can be loaded from final location
> ** testing if installed package keeps a record of temporary installation
> path
> * DONE (cowplot)
> 
> The downloaded source packages are in
> 	‘/tmp/Rtmp9NXQkt/downloaded_packages’
> Warning in install.packages :
>     converting NULL pointer to R NULL
> 
> 
> Also, I'm running this on RStudio and haven't changed the R library
> directory.
> 
> 
> sessionInfo()
> R version 4.0.0 (2020-04-24)
> Platform: x86_64-pc-linux-gnu (64-bit)
> Running under: Ubuntu 20.04 LTS
> 
> Matrix products: default
> BLAS:   /usr/lib/x86_64-linux-gnu/blas/libblas.so.3.9.0
> LAPACK: /usr/lib/x86_64-linux-gnu/lapack/liblapack.so.3.9.0
> 
> locale:
>    [1] LC_CTYPE=pt_PT.UTF-8       LC_NUMERIC=C
> LC_TIME=pt_PT.UTF-8
>    [4] LC_COLLATE=pt_PT.UTF-8     LC_MONETARY=pt_PT.UTF-8
> LC_MESSAGES=pt_PT.UTF-8
>    [7] LC_PAPER=pt_PT.UTF-8       LC_NAME=C                  LC_ADDRESS=C
> 
> [10] LC_TELEPHONE=C             LC_MEASUREMENT=pt_PT.UTF-8
> LC_IDENTIFICATION=C
> 
> attached base packages:
> [1] stats     graphics  grDevices utils     datasets  methods   base
> 
> other attached packages:
> [1] MASS_7.3-51.6  ggthemes_4.2.0 ggrepel_0.8.2  dplyr_0.8.5
> ggplot2_3.3.0
> 
> loaded via a namespace (and not attached):
>    [1] zoo_1.8-8          tidyselect_1.0.0   purrr_0.3.4
> reshape2_1.4.4     haven_2.2.0
>    [6] lattice_0.20-41    sodium_1.1         carData_3.0-3
> colorspace_1.4-1   vctrs_0.2.4
> [11] yaml_2.2.1         rlang_0.4.6        pillar_1.4.3
> withr_2.2.0        foreign_0.8-79
> [16] glue_1.4.0         readxl_1.3.1       lifecycle_0.2.0    plyr_1.8.6
>           stringr_1.4.0
> [21] MatrixModels_0.4-1 munsell_0.5.0      gtable_0.3.0
> cellranger_1.1.0   zip_2.0.4
> [26] rio_0.5.16         forcats_0.5.0      SparseM_1.78
> quantreg_5.55      curl_4.3
> [31] tis_1.38           Rcpp_1.0.4.6       readr_1.3.1
> scales_1.1.0       abind_1.4-5
> [36] farver_2.0.3       sos_2.0-0          brew_1.0-6
> digest_0.6.25      hms_0.5.3
> [41] png_0.1-7          stringi_1.4.6      openxlsx_4.1.4     grid_4.0.0
>           tools_4.0.0
> [46] magrittr_1.5       tibble_3.0.1       pacman_0.5.1
> crayon_1.3.4       car_3.0-7
> [51] pkgconfig_2.0.3    ellipsis_0.3.0     Matrix_1.2-18
> data.table_1.12.8  assertthat_0.2.1
> [56] httr_1.4.1         rstudioapi_0.11    R6_2.4.1
> compiler_4.0.0
> 
> 
> Thanks in advance,
> 
> Rui Barradas
> 
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