devtools::install

2023-04-25 12:20| 来源: 网络整理| 查看: 265

百度翻译此文有道翻译此文问题描述

When I try to call install_github, I get the following error (not just for this package, but for all github packages):

> install_github('ramnathv/slidify') Downloading github repo ramnathv/slidify@master Error in curl::curl_fetch_memory(url, handle = handle) : Problem with the SSL CA cert (path? access rights?)

But if I use RCurl directly to access github with ssl, I don't get any problem:

> x sessionInfo() R version 3.2.1 (2015-06-18) Platform: x86_64-pc-linux-gnu (64-bit) Running under: Debian GNU/Linux 8 (jessie) locale: [1] LC_CTYPE=en_US.utf8 LC_NUMERIC=C [3] LC_TIME=en_US.utf8 LC_COLLATE=en_US.utf8 [5] LC_MONETARY=en_US.utf8 LC_MESSAGES=en_US.utf8 [7] LC_PAPER=en_US.utf8 LC_NAME=C [9] LC_ADDRESS=C LC_TELEPHONE=C [11] LC_MEASUREMENT=en_US.utf8 LC_IDENTIFICATION=C attached base packages: [1] stats graphics grDevices utils datasets methods base other attached packages: [1] RCurl_1.95-4.7 bitops_1.0-6 devtools_1.8.0 loaded via a namespace (and not attached): [1] httr_1.0.0 R6_2.1.0 magrittr_1.5 rversions_1.0.2 [5] tools_3.2.1 curl_0.9.1 Rcpp_0.12.0 memoise_0.2.1 [9] xml2_0.1.1 stringi_0.5-5 git2r_0.10.1 stringr_1.0.0 [13] digest_0.6.8

And

> curlVersion() $age [1] 3 $version [1] "7.38.0" $vesion_num [1] 468480 $host [1] "x86_64-pc-linux-gnu" $features ipv6 ssl libz ntlm asynchdns spnego 1 4 8 16 128 256 largefile idn tlsauth_srp ntlm_wb 512 1024 16384 32768 $ssl_version [1] "OpenSSL/1.0.1k" $ssl_version_num [1] 0 $libz_version [1] "1.2.8" $protocols [1] "dict" "file" "ftp" "ftps" "gopher" "http" "https" "imap" [9] "imaps" "ldap" "ldaps" "pop3" "pop3s" "rtmp" "rtsp" "scp" [17] "sftp" "smtp" "smtps" "telnet" "tftp" $ares [1] "" $ares_num [1] 0 $libidn [1] "1.29"

If I use httr::set_config( httr::config( ssl_verifypeer = 0L ) ) then I can successfully run install_github but I would prefer to actually check ssl certificates.

Can anyone offer a solution?

推荐答案

Finally figured this out.

I had two different ssl libraries installed and for some reason, the RCurl package built against libcurl4-openssl-dev and the curl package built against libcurl4-nss-dev, but I had only installed CA keys for openssl, not for nss.

I solved my problem with remove.packages('curl') in R and then quitting R and from the shell apt-get remove libcurl4-nss-dev starting R and install.packages('curl')

My mistake, which led to my question, was to test the SSL CA handling using RCurl instead of httr or curl, which would have led me quickly to the fact that my curl package was linked to the wrong SSL library.

其他推荐答案

If httr lib is missing the same error appears

try:

install.packages("httr")

其他推荐答案

I removed httr (deleting the whole httr folder directly from my R win-library) and reinstalled it. Then, installation from github worked smoothly

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