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Description
We saw this issue in a Connect customer environment.
They have a proxy for internet access. http_proxy and https_proxy environment variables are set when packrat is invoked. Packrat has no trouble installing packages from CRAN.
What we saw is:
- Connect configures
download.file.methodto becurl, and sets some curl options. - Packrat, with
devtoolsandhttrinstalled, uses its internal GitHub downloader which uses httr. - The internal downloader doesn't configure httr's proxy settings based on
http_proxyandhttps_proxy. - Consequently, package downloads from GitHub failed.
Some ideas for fixes include always using the configured downloader, or configuring httr's proxy settings based on the standard proxy environment variables.
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