每当我想在我的 Windows 机器上重新创建一个项目时，renv:restore()它总是无法安装包。我总是得到同样的错误（尽管包可能会改变）：
Retrieving 'https://cloud.r-project.org/src/contrib/Archive/xfun/xfun_0.21.tar.gz' ...
Error: failed to retrieve package 'xfun'
In addition: Warning messages:
1: curl: (35) schannel: next InitializeSecurityContext failed: Unknown error (0x80092012) - The revocation function was unable to check revocation for the certificate.
2: curl: (35) schannel: next InitializeSecurityContext failed: Unknown error (0x80092012) - The revocation function was unable to check revocation for the certificate.
3: download failed [error code 35]
4: curl: (35) schannel: next InitializeSecurityContext failed: Unknown error (0x80092012) - The revocation function was unable to check revocation for the certificate.
5: curl: (35) schannel: next InitializeSecurityContext failed: Unknown error (0x80092012) - The revocation function was unable to check revocation for the certificate.
这是我的会话信息：
> sessionInfo()
R version 4.0.5 (2021-03-31)
Platform: x86_64-w64-mingw32/x64 (64-bit)
Running under: Windows 10 x64 (build 19042)
Matrix products: default
locale:
[1] LC_COLLATE=English_United Kingdom.1252 LC_CTYPE=English_United Kingdom.1252 LC_MONETARY=English_United Kingdom.1252
[4] LC_NUMERIC=C LC_TIME=English_United Kingdom.1252
attached base packages:
[1] stats graphics grDevices datasets utils methods base
loaded via a namespace (and not attached):
[1] compiler_4.0.5 tools_4.0.5 renv_0.12.0
这也可能有用：
> getOption("download.file.method")
[1] "wininet"
> renv:::renv_download_file_method()
[1] "curl"
>
运行后：（Sys.setenv(RENV_DOWNLOAD_METHOD = "curl")或 wininet或libcurl）我总是得到与以前相同的错误。
作为一种解决方法，我执行了以下操作：
- 关闭项目
- 正常安装包（没有 renv）
- 使用 renv 打开项目
- 恢复快照
如果之前已经安装了这些软件包，它们将被符号链接并且它们可以工作。
不幸的是，这非常麻烦，因为许多软件包都有依赖项，我必须手动安装它们，而这正是我想要避免的事情之一，也是使用 renv 的原因之一！