Error: processing vignette 'QuickStart.Rmd' failed with diagnostics: there is no package called 'utf8'

Error: processing vignette 'QuickStart.Rmd' failed with diagnostics: there is no package called 'utf8'

我现在正在将 CRAN 上的软件包版本更新到 0.2.1。

做完后,devtools::check_rhub(),报错说:

checking re-building of vignette outputs (1.9s)
   Error(s) in re-building vignettes:
     ...
   --- re-building 'QuickStart.Rmd' using rmarkdown
   Quitting from lines 74-75 (QuickStart.Rmd) 
   Error: processing vignette 'QuickStart.Rmd' failed with diagnostics:
   there is no package called 'utf8'
   --- failed re-building 'QuickStart.Rmd'
   
   SUMMARY: processing the following file failed:
     'QuickStart.Rmd'
   
   Error: Vignette re-building failed.
   Execution halted

我检查了第 74-75 行的代码是

generate_ts(n.ts = 3, freq = 12, nComp = 2, n = 120, output_format = "tsibble")

我试图在 vignette 中添加 library(utf8) 然后我从 devtools::check(cran=TRUE) 得到一个错误说:

checking for unstated dependencies in vignettes ... NOTE
  'library' or 'require' call not declared from: 'utf8'

我试图在 vignette 中添加 library(utf8) 并在 DESCRIPTION 中添加 utf8,但这进一步导致一个错误

checking package dependencies ... ERROR
  
  The suggested packages are required for a complete check.
  Checking can be attempted without them by setting the environment
  variable _R_CHECK_FORCE_SUGGESTS_ to a false value.
  
  See section 'The DESCRIPTION file' in the 'Writing R Extensions'
  manual.

有人知道如何解决这个问题吗?

小插图中的其他代码

title: "Introduction to gratis"
author: "Bocong Zhao"
output: rmarkdown::html_vignette
vignette: >
  %\VignetteIndexEntry{Introduction to gratis}
  %\VignetteEngine{knitr::rmarkdown}
  %\VignetteEncoding{UTF-8}

{r initial, echo = FALSE, cache = FALSE, results = 'hide'}
library(knitr)
opts_chunk$set(
  warning = FALSE, message = FALSE, echo = TRUE,
  fig.width = 7, fig.height = 6, fig.align = 'centre',
  comment = "#>"
)

{r, message=FALSE, include = FALSE}
library(forecast)
library(tsibble)
library(utf8)

参考本站答案,

github.com/r-hub/rhub/issues/374

运行此代码可以解决问题 devtools::check_rhub(env_vars=c(R_COMPILE_AND_INSTALL_PACKAGES = "always"))