The goal of arnaudmillan is to say hello to somebody.
You need to install the tar.gz localy if you have it with
remotes::install_local(path = "arnaudmillan_0.xx.0.tar.gz")
Or start by build and install from the sources.
This is a basic example which shows you how to solve a common problem:
library(arnaudmillan)
## basic example code
dire_bonjour('Arnaud')
#> Bonjour Arnaud
dire_bonjour()
#> Bonjour toi