blogdown: 'system3' 不是从 'namespace:xfun' 导出的对象

Posted 2023-02-19

【中文标题】blogdown: \'system3\' 不是从 \'namespace:xfun\' 导出的对象

【英文标题】：blogdown: 'system3' is not an exported object from 'namespace:xfun'blogdown: 'system3' 不是从 'namespace:xfun' 导出的对象

【发布时间】：2022-01-07 20:50:20

【问题描述】：

在Windows 10 上，blogdown::new_site() 函数出现以下错误：

Hugo 已安装到“C:\Users\hp\AppData\Roaming\Hugo\0.89.4”。 建议设置选项(blogdown.hugo.version = "0.89.4") 在您网站项目的 .Rprofile 文件中。请参阅 blogdown 书 有关 .Rprofile 的更多信息： https://bookdown.org/yihui/blogdown/global-options.html

错误：“system3”不是从“namespace:xfun”导出的对象

我想知道我在这里缺少什么？任何提示。

sessionInfo()

R version 4.1.2 (2021-11-01)
Platform: x86_64-w64-mingw32/x64 (64-bit)
Running under: Windows 10 x64 (build 19042)

Matrix products: default

locale:
[1] LC_COLLATE=English_United States.1252 
[2] LC_CTYPE=English_United States.1252   
[3] LC_MONETARY=English_United States.1252
[4] LC_NUMERIC=C                          
[5] LC_TIME=English_United States.1252    

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base     

other attached packages:
[1] xfun_0.28

loaded via a namespace (and not attached):
[1] compiler_4.1.2 tools_4.1.2    blogdown_1.6.5 pacman_0.5.1

【参考方案1】：

仅供参考，我在尝试遵循 this blog 的 TL;DR 部分时遇到完全相同的错误，那是在显式更新 xfun 包之后。这是我尝试运行的整个代码段：

remotes::install_github("rstudio/blogdown")
usethis::create_project()
blogdown::new_site(theme = "wowchemy/starter-academic")

这是我得到的错误：

09:14:26  > blogdown::new_site(theme = "wowchemy/starter-academic")
― Creating your new site
| Installing Hugo
The latest Hugo version is v0.90.1
trying URL 'https://github.com/gohugoio/hugo/releases/download/v0.90.1/hugo_extended_0.90.1_macOS-ARM64.tar.gz'
Content type 'application/octet-stream' length 16102460 bytes (15.4 MB)
==================================================
downloaded 15.4 MB

Hugo has been installed to "/Users/rogerbos/Library/Application Support/Hugo/0.90.1". 
Error: 'system3' is not an exported object from 'namespace:xfun'
09:14:26  > 

这是我的 sessionInfo()：

9:14:26  > sessionInfo()
R version 4.1.2 (2021-11-01)
Platform: aarch64-apple-darwin20 (64-bit)
Running under: macOS Monterey 12.0.1

Matrix products: default
LAPACK: /Library/Frameworks/R.framework/Versions/4.1-arm64/Resources/lib/libRlapack.dylib

locale:
[1] en_US.UTF-8/en_US.UTF-8/en_US.UTF-8/C/en_US.UTF-8/en_US.UTF-8

attached base packages:
[1] datasets  utils     stats     graphics  grDevices methods   base     

other attached packages:
 [1] alphavantager_0.1.2 googlesheets4_1.0.0 googledrive_2.0.0  
 [4] clipr_0.7.1         jsonlite_1.7.2      stringi_1.7.6      
 [7] dtplyr_1.1.0        data.table_1.14.2   dplyr_1.0.7        
[10] plyr_1.8.6          testthat_3.1.0      lubridate_1.8.0    
[13] timeDate_3043.102   sendmailR_1.2-1     rmarkdown_2.11     
[16] devtools_2.4.2      usethis_2.1.3       xts_0.12.1         
[19] zoo_1.8-9           MASS_7.3-54         fortunes_1.5-4     

loaded via a namespace (and not attached):
 [1] Rcpp_1.0.7        lattice_0.20-45   prettyunits_1.1.1
 [4] ps_1.6.0          assertthat_0.2.1  rprojroot_2.0.2  
 [7] digest_0.6.29     utf8_1.2.2        R6_2.5.1         
[10] cellranger_1.1.0  evaluate_0.14     blogdown_1.6.5   
[13] httr_1.4.2        pillar_1.6.4      rlang_0.4.12     
[16] curl_4.3.2        rstudioapi_0.13   callr_3.7.0      
[19] desc_1.4.0        compiler_4.1.2    xfun_0.28        
[22] pkgconfig_2.0.3   askpass_1.1       base64enc_0.1-3  
[25] pkgbuild_1.2.0    htmltools_0.5.2   openssl_1.4.5    
[28] tidyselect_1.1.1  tibble_3.1.5      bookdown_0.24    
[31] fansi_0.5.0       crayon_1.4.2      withr_2.4.2      
[34] rappdirs_0.3.3    grid_4.1.2        lifecycle_1.0.1  
[37] DBI_1.1.1         magrittr_2.0.1    cli_3.1.0        
[40] cachem_1.0.6      fs_1.5.0          remotes_2.4.1    
[43] ellipsis_0.3.2    vctrs_0.3.8       generics_0.1.1   
[46] tools_4.1.2       glue_1.5.1        purrr_0.3.4      
[49] processx_3.5.2    pkgload_1.2.3     fastmap_1.1.0    
[52] gargle_1.2.0      sessioninfo_1.2.1 memoise_2.0.0    
[55] knitr_1.36       

【参考方案2】：

我不知道你是如何在没有同时安装 xfun 开发版的情况下安装 blogdown 开发版的，因为后者是必需的（ as specified in DESCRIPTION)。根据installation instruction in README，这是您安装 blogdown 开发版的方式：

remotes::install_github('rstudio/blogdown')

xfun 的开发版应该会自动安装（注意你需要 RTools）。

【讨论】：

xfun 已安装。但是，即使在安装了blogdown 的开发版之后，也会出现同样的错误：| Installing Hugo The latest Hugo version is v0.89.4 trying URL 'https://github.com/gohugoio/hugo/releases/download/v0.89.4/hugo_extended_0.89.4_Windows-64bit.zip' Content type 'application/octet-stream' length 16437214 bytes (15.7 MB) downloaded 15.7 MB

Hugo has been installed to "C:\Users\hp\AppData\Roaming\Hugo\0.89.4". You are recommended to set options(blogdown.hugo.version = "0.89.4") in the .Rprofile file in your website project. See the blogdown book for more info on .Rprofile: https://bookdown.org/yihui/blogdown/global-options.html Error: 'system3' is not an exported object from 'namespace:xfun'

我的意思是当你remotes::install_github('rstudio/blogdown')时，它应该自动执行remotes::install_github('yihui/xfun')。我不知道为什么没有。您可以手动安装 xfun 的开发版。