ggtern fails to install with ggplot2 3.3.0 but installs well with ggplot2 3.1.0 in R 3.6
installing source package ‘ggtern’ ...
package ‘ggtern’ successfully unpacked and MD5 sums checked
using staged installation
R
data
demo
inst
** byte-compile and prepare package for lazy loading
Error in get(x, envir = ns, inherits = FALSE) :
object 'expand_default' not found
Error: unable to load R code in package ‘ggtern’
Execution halted
The same problem at installation happened with me on R 3.6.3. Going back to ggplot 3.2.1 with devtools::install_version("ggplot2", version = "3.2.1") made it possible to install ggtern
ggtern fails to install with ggplot2 3.3.0 but installs well with ggplot2 3.1.0 in R 3.6