ab-initio.mit.edu down --> caret installation gets stucked

[ross85]

Hello,
I am trying to install caret using install.packages("caret") but one dependency is offline so I get the following error:

• installing source package ‘nloptr’ ...
  ** package ‘nloptr’ successfully unpacked and MD5 sums checked
  ...
  configure: Need to download and build NLopt
  trying URL 'http://ab-initio.mit.edu/nlopt/nlopt-2.4.2.tar.gz'
  Error in download.file(url = "http://ab-initio.mit.edu/nlopt/nlopt-2.4.2.tar.gz", :
  cannot open URL 'http://ab-initio.mit.edu/nlopt/nlopt-2.4.2.tar.gz'

I know I can probably install NLopt manually, but this could create some troubles.

[topepo]

Try using a different mirror (maybe cran.r-project.org or cran.rstudio.com)

[ross85]

Now it's online again, but whichever mirror you use it goes to http://ab-initio.mit.edu to download NLopt (it's not an R package).

[topepo]

What OS are you on?

[ross85]

Ubuntu 16.04

[topepo]

Try using sudo apt-get install libnlopt-dev

[topepo]

Also, this link gets you to the sources

[ross85]

That's fine, as I pointed out in the original post I know I can install the library before (and setting paths and env variables), but I guess a lot of people will have trouble installing CARET if that dependency goes down again.

[topepo]

Okay, now it's really getting on my nerves.

caret gets it though the dependency on car (caret -> car -> pbkrtest -> lme4 -> nloptr)

I use car for the Yeo-Johnson transformation but I recently wrote that from scratch for another package. I'd rather move that code into caret than keep the car dependency.

[sinkagergo]

When I am trying to install, I get the below message:

devtools::install_github('topepo/caret/pkg/caret')
Downloading GitHub repo topepo/caret@master
from URL https://api.github.com/repos/topepo/caret/zipball/master
Error: running command '"C:/PROGRA1/R/R-341.1/bin/x64/R" --no-site-file --no-environ --no-save --no-restore --quiet CMD config CC' had status 127

Any ideas why?

Thanks!

[topepo]

No idea. Can you send sessionInfo()?

[topepo]

Also, try this