Installation failed: 'rcmd_safe_env' is not an exported object from 'namespace:callr' about callr

[gaborcsardi]

I suspect that this is because devtools uses callr to install callr. We'll need to work around this later.

As a workaround for now, you can use remotes to install it, see e.g. https://github.com/MangoTheCat/remotes#installation or just use the install script we provide:

source("https://install-github.me/mangothecat/callr")

[gaborcsardi]

@chrisaddy did this solve the issue?

[chrisaddy]

Yes, like magic! Thank you.

[gaborcsardi]

No worries, and sorry for the trouble.

[mojtaba-komeili]

I followed your solution (running script to install remote) on Mac and didn't work. Am I doing something wrong or is it different for Mac?

[Deleetdk]

Did not work for me either.

• Mint 18.3 (Ubuntu 16.04)
• R 3.4.0

[jzadra]

Solution also did not work for me on mac

[chambox]

and also for me on ubuntu 16.04

[halflearned]

Having the same issue after updating from R 3.3.0 to 3.4.3.

[chambox]

For ubuntu 16.04 users, I realized a simple fix will be to update everything first so that your devtools and callr versions are up to date. Simply run the command
update.packages(ask = FALSE)​

This solved everything for me