pkg_ref() does not behave as indicated in Examples

[ramiromagno]

In pkg_ref() doc:

# You can also override this behavior with a source argument
ref_2 <- pkg_ref("utils", source = "pkg_cran_remote")
ref_2$source  # returns 'pkg_cran_remote'

But:

library(riskmetric)
ref_2 <- pkg_ref("utils", source = "pkg_cran_remote")
#> Warning in verify_pkg_source(x, source, repos): Package: `utils` not found on
#> CRAN, source is now 'pkg_missing'

ref_2$source
#> [1] "pkg_missing"

sessionInfo()
#> R version 4.4.0 (2024-04-24)
#> Platform: x86_64-pc-linux-gnu
#> Running under: Arch Linux
#> 
#> Matrix products: default
#> BLAS:   /usr/lib/libblas.so.3.12.0 
#> LAPACK: /usr/lib/liblapack.so.3.12.0
#> 
#> locale:
#>  [1] LC_CTYPE=en_US.UTF-8       LC_NUMERIC=C              
#>  [3] LC_TIME=en_US.UTF-8        LC_COLLATE=en_US.UTF-8    
#>  [5] LC_MONETARY=en_US.UTF-8    LC_MESSAGES=en_US.UTF-8   
#>  [7] LC_PAPER=en_US.UTF-8       LC_NAME=C                 
#>  [9] LC_ADDRESS=C               LC_TELEPHONE=C            
#> [11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C       
#> 
#> time zone: Europe/Lisbon
#> tzcode source: system (glibc)
#> 
#> attached base packages:
#> [1] stats     graphics  grDevices utils     datasets  methods   base     
#> 
#> other attached packages:
#> [1] riskmetric_0.2.4.9000
#> 
#> loaded via a namespace (and not attached):
#>  [1] styler_1.10.3       utf8_1.2.4          xml2_1.3.6         
#>  [4] stringi_1.8.4       digest_0.6.35       magrittr_2.0.3     
#>  [7] evaluate_0.24.0     pkgload_1.3.4       fastmap_1.2.0      
#> [10] R.oo_1.26.0         R.cache_0.16.0      jsonlite_1.8.8     
#> [13] R.utils_2.12.3      pkgbuild_1.4.4      sessioninfo_1.2.2  
#> [16] cranlogs_2.1.1      backports_1.5.0     urltools_1.7.3     
#> [19] urlchecker_1.0.1    promises_1.3.0      BiocManager_1.30.23
#> [22] httr_1.4.7          fansi_1.0.6         purrr_1.0.2        
#> [25] lazyeval_0.2.2      cli_3.6.2           shiny_1.8.1.1      
#> [28] rlang_1.1.3         covr_3.6.4          triebeard_0.4.1    
#> [31] R.methodsS3_1.8.2   ellipsis_0.3.2      reprex_2.1.0       
#> [34] remotes_2.5.0       withr_3.0.0         cachem_1.1.0       
#> [37] yaml_2.3.8          devtools_2.4.5      tools_4.4.0        
#> [40] memoise_2.0.1       httpuv_1.6.15       curl_5.2.1         
#> [43] vctrs_0.6.5         R6_2.5.1            mime_0.12          
#> [46] lifecycle_1.0.4     stringr_1.5.1       fs_1.6.4           
#> [49] htmlwidgets_1.6.4   usethis_2.2.3       miniUI_0.1.1.1     
#> [52] pkgconfig_2.0.3     pillar_1.9.0        rex_1.2.1          
#> [55] later_1.3.2         glue_1.7.0          profvis_0.3.8      
#> [58] Rcpp_1.0.12         tibble_3.2.1        xfun_0.44          
#> [61] rstudioapi_0.16.0   knitr_1.46          xtable_1.8-4       
#> [64] htmltools_0.5.8.1   rmarkdown_2.27      compiler_4.4.0

^{Created on 2024-08-01 with reprex v2.1.0}

[emilliman5]

The example needs to be updated. I think, because utils is a base package it is not technically in CRAN which is why you are getting this error. When I use ggplot2 or nlme I get the intended result as shown in the examples.