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I have updated to Rstudio 1.1.383 (for Ubuntu 16.04 Xenial AMD64) and R 3.4.2. Am trying to install opencpu package to test standalone R-code before pushing to the cloudserver version of opencpu, but without any luck. I am following the instructions from: OpenCPU instructions

trying URL 'http://cran.rstudio.com/src/contrib/opencpu_2.0.5.tar.gz' Content type 'application/x-gzip' length 372977 bytes (364 KB) ================================================== downloaded 364 KB

  • installing source package ‘opencpu’ ... ** package ‘opencpu’ successfully unpacked and MD5 sums checked ** R ** data *** moving datasets to lazyload DB ** inst ** preparing package for lazy loading Error in loadNamespace(j <- i[[1L]], c(lib.loc, .libPaths()), versionCheck = vI[[j]]) :
    namespace ‘evaluate’ 0.10 is being loaded, but >= 0.10.1 is required ERROR: lazy loading failed for package ‘opencpu’
  • removing ‘/home/vmpdc/R/x86_64-pc-linux-gnu-library/3.4/opencpu’ Warning in install.packages : installation of package ‘opencpu’ had non-zero exit status

Have tried using: 

install.packages("opencpu",repos="http://cran.rstudio.com/")

and 

install.packages("opencpu",repos="http://cran.cnr.Berkeley.edu/")

but no difference.

Not sure if this has any effect, but have installed the cloud server version of the opencpu on the same ubuntu box (which is under apache2).

I was able to follow the instructions from hereHow to install OpenCPU, which uses the github link (though did get an error for

configuration failed for package protolite

  • protobuf-compiler is not installed in my system for R3.4.2)

Not sure what to make of the namespace 'evaluate' error, though.

Vinnie
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  • Jeoren's suggestion did the trick. Incidentally, following his other somewhat related [suggestion](https://github.com/jeroen/protolite/issues/4) on github, I did: `sudo apt-get install protobuf-compiler` and that took care of the protolite error. – Vinnie Nov 15 '17 at 23:16

1 Answers1

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It says the evaluate package is outdated. Try this:

update.packages(ask = FALSE)

The opencpu package requires the latest version of the evaluate package.

Jeroen Ooms
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