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You can install psmineR from CRAN with:
install.packages("psmineR")
You can install the development version of psmineR from GitHub with:
# install.packages("devtools")
# devtools::install_github("bupaverse/psmineR")
install.packages("psmineR", repos = c('https://bupaverse.r-universe.dev', 'https://cloud.r-project.org'))