当我重建自定义 R 包时，依赖项下列出的包不会安装

Question

我正在重建一个自定义 R 程序包，它在 DESCRIPTION 文件的 Depends 行中包含其他库中的 RcppArmadillo。

我是运行 R 3.5.1。当我在 RStudio 中重建包时，出现错误：

ERROR: dependency ‘RcppArmadillo’ is not available for package 'custom package name'

根据 R Packages book，重建包时必须安装 Depends/Imports 下的包。

Answer 1

解决方案

改用devtools::install()。

说明

根据 RStudio website,

The Build and Reload command performs several steps in sequence to ensure a clean and correct result:
    1.Unloads any existing version of the package (including shared libraries ifnecessary).
    2.Builds and installs the package using R CMD INSTALL.
    3.Restarts the underlying R session to ensure a clean environment for re-loading the package.
    4.Reloads the package in the new R session by executing the library function.

虽然 devtools::install() 将为您安装依赖项 -- 来自 help("install.packages"):

Uses R CMD INSTALL to install the package. Will also try to install dependencies of the package from CRAN, if they're not already installed.

（强调）单独 R CMD INSTALL 不是这种情况（请参阅 R 中的 ?INSTALL 或命令行中的 R CMD INSTALL --help 等 - 没有提及安装所需的依赖项）。

于是，出现了语言

In fact, any time your package is installed, those packages will, if not already present, be installed on your computer (devtools::load_all() also checks that the packages are installed).

来自 Hadley 的 R Packages is a little specific; it does not pertain to using R CMD INSTALL (which RStudio's build function apparently uses), but does work for devtools::install(). It's a matter of personal taste, but honestly I highly recommend using devtools 在您的包开发工作流程中。

例子

我通过

从我的系统中删除了包rbenchmark

remove.packages("rbenchmark")

然后

创建了一个虚拟包

devtools::create("SOexample", rstudio = FALSE)

并编辑说明以将 rbenchmark 放入导入中，以便 SOexample 依赖于它。我在 R/hello_world.R 中添加了以下代码：

hello_world <- function() print("Hello, world!")

我尝试了 R CMD INSTALL，但出现了错误

*installing to library ‘/home/duckmayr/R/x86_64-pc-linux-gnu-library/3.5’
ERROR: dependency ‘rbenchmark’ is not available for package ‘SOexample’
*removing ‘/home/duckmayr/R/x86_64-pc-linux-gnu-library/3.5/SOexample’

但是，如果我尝试 devtools::install():

> devtools::install("SOexample/")
Installing SOexample
trying URL 'https://cloud.r-project.org/src/contrib/rbenchmark_1.0.0.tar.gz'
Content type 'application/x-gzip' length 5093 bytes
==================================================
downloaded 5093 bytes

Installing rbenchmark
'/usr/lib/R/bin/R' --no-site-file --no-environ --no-save --no-restore --quiet  \
  CMD INSTALL '/tmp/RtmpA0NOMe/devtools723832018149/rbenchmark'  \
  --library='/home/duckmayr/R/x86_64-pc-linux-gnu-library/3.5' --install-tests 

* installing *source* package ‘rbenchmark’ ...
** package ‘rbenchmark’ successfully unpacked and MD5 sums checked
** R
** demo
** byte-compile and prepare package for lazy loading
** help
*** installing help indices
** building package indices
** testing if installed package can be loaded
* DONE (rbenchmark)
'/usr/lib/R/bin/R' --no-site-file --no-environ --no-save --no-restore --quiet  \
  CMD INSTALL '/home/duckmayr/SOexample'  \
  --library='/home/duckmayr/R/x86_64-pc-linux-gnu-library/3.5' --install-tests 

* installing *source* package ‘SOexample’ ...
** R
** byte-compile and prepare package for lazy loading
** help
No man pages found in package  ‘SOexample’ 
*** installing help indices
** building package indices
** testing if installed package can be loaded
* DONE (SOexample)

当我重建自定义 R 包时，依赖项下列出的包不会安装

Package listed under depends does not install when I rebuild a custom R Package

r

r-library

解决方案

说明

例子