force_instl_of_reqd_pkg <- function(package_nm_1L_chr){
if(!package_nm_1L_chr %in% installed.packages()){
install.packages(package_nm_1L_chr,
Sys.getenv("R_LIBS_USER"),
repos="https://cran.ms.unimelb.edu.au/")
}
library(package_nm_1L_chr,
character.only=TRUE
)
}
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