I am having trouble installing most packages, this is the error message when I try to install the package 'greta':
install.packages("greta", dependencies = FALSE)
There is a binary version available but the source version is later:
binary source needs_compilation
greta 0.3.0 0.3.1 FALSE
installing the source package ‘greta’
essai de l'URL 'https://mirror.ibcp.fr/pub/CRAN/src/contrib/greta_0.3.1.tar.gz'
Content type 'application/x-gzip' length 882526 bytes (861 KB)
downloaded 861 KB
ERROR: dependency ‘tensorflow’ is not available for package ‘greta’
- removing ‘/Library/Frameworks/R.framework/Versions/3.4/Resources/library/greta’
Warning in install.packages :
installation of package ‘greta’ had non-zero exit status
The downloaded source packages are in
Thank you for your help!