I did a straight
install.packages("zip")
at it installed and loaded.
I did get a strange warning message
install.packages("zip")
Warning in install.packages :
unable to access index for repository https://cloud.r-project.org/src/contrib:
download from 'https://cloud.r-project.org/src/contrib/PACKAGES' failed
Installing package into ‘/home/john/R/x86_64-pc-linux-gnu-library/4.1’
but it went on and worked.