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R CMD BUILD
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* checking for file ‘chevreul/DESCRIPTION’ ... OK
* preparing ‘chevreul’:
* checking DESCRIPTION meta-information ... OK
* installing the package to build vignettes
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* installing *source* package ‘chevreul’ ...
** using staged installation
** R
** byte-compile and prepare package for lazy loading
** help
*** installing help indices
** building package indices
** installing vignettes
** testing if installed package can be loaded from temporary location
Error: package or namespace load failed for ‘chevreul’:
.onAttach failed in attachNamespace() for 'chevreul', details:
call: rule(left = bold("Attaching packages"), right = paste0("chevreul ",
error: could not find function "rule"
Error: loading failed
Execution halted
ERROR: loading failed
* removing ‘/tmp/RtmpbHgD8k/Rinst10a563d886e82/chevreul’
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ERROR: package installation failed