Error in loadNamespace(name) : there is no package called ‘IRkernel’ in R 3.5.1

[anshumansinghraghuvanshi]

downloaded 596 KB

Installing pbdZMQ
'/Library/Frameworks/R.framework/Resources/bin/R' --no-site-file --no-environ --no-save --no-restore  \
  --quiet CMD INSTALL  \
  '/private/var/folders/94/8px0b66x2qz1_9cdlfbnk4fw0000gn/T/Rtmps5hsN2/devtools2aee43058951/pbdZMQ'  \
  --library='/Library/Frameworks/R.framework/Versions/3.5/Resources/library' --install-tests 

* installing *binary* package ‘pbdZMQ’ ...
* DONE (pbdZMQ)
Skipping install of 'repr' from a cran remote, the SHA1 (0.15.0) has not changed since last install.
  Use `force = TRUE` to force installation
trying URL 'https://cran.rstudio.com/bin/macosx/el-capitan/contrib/3.5/uuid_0.1-2.tgz'
Content type 'application/x-gzip' length 26061 bytes (25 KB)
==================================================
downloaded 25 KB

Installing uuid
'/Library/Frameworks/R.framework/Resources/bin/R' --no-site-file --no-environ --no-save --no-restore  \
  --quiet CMD INSTALL  \
  '/private/var/folders/94/8px0b66x2qz1_9cdlfbnk4fw0000gn/T/Rtmps5hsN2/devtools2aee437f2511/uuid'  \
  --library='/Library/Frameworks/R.framework/Versions/3.5/Resources/library' --install-tests 

* installing *binary* package ‘uuid’ ...
* DONE (uuid)
'/Library/Frameworks/R.framework/Resources/bin/R' --no-site-file --no-environ --no-save --no-restore  \
  --quiet CMD INSTALL  \
  '/private/var/folders/94/8px0b66x2qz1_9cdlfbnk4fw0000gn/T/Rtmps5hsN2/devtools2aee700c023e/IRkernel-IRkernel-97c492b'  \
  --library='/Library/Frameworks/R.framework/Versions/3.5/Resources/library' --install-tests 

* installing *source* package ‘IRkernel’ ...
** R
** inst
** tests
** byte-compile and prepare package for lazy loading
xcrun: error: invalid active developer path (/Library/Developer/CommandLineTools), missing xcrun at: /Library/Developer/CommandLineTools/usr/bin/xcrun
Warning in system(paste(cmd.ot, " -D ", fn.dylib, sep = ""), intern = TRUE) :
  running command '/usr/bin/otool -D /Library/Frameworks/R.framework/Versions/3.5/Resources/library/pbdZMQ/libs/libzmq.5.dylib' had status 1
Error : .onLoad failed in loadNamespace() for 'pbdZMQ', details:
  call: if (id[2] != fn.dylib) {
  error: missing value where TRUE/FALSE needed
ERROR: lazy loading failed for package ‘IRkernel’
* removing ‘/Library/Frameworks/R.framework/Versions/3.5/Resources/library/IRkernel’
Installation failed: Command failed (1)
Warning message:
GitHub repo contains submodules, may not function as expected! 
> IRkernel::installspec()
Error in loadNamespace(name) : there is no package called ‘IRkernel’
> version
               _                           
platform       x86_64-apple-darwin15.6.0   
arch           x86_64                      
os             darwin15.6.0                
system         x86_64, darwin15.6.0        
status                                     
major          3                           
minor          5.1                         
year           2018                        
month          07                          
day            02                          
svn rev        74947                       
language       R                           
version.string R version 3.5.1 (2018-07-02)
nickname       Feather Spray               

[flying-sheep]

the error is this part

Error : .onLoad failed in loadNamespace() for 'pbdZMQ', details:
  call: if (id[2] != fn.dylib) {
  error: missing value where TRUE/FALSE needed

i.e. pbdZMQ failed to install, so this is a pbdZMQ error not an IRkernel error. please file an isue there!