## ---- eval=F------------------------------------------------------------------
#  Sys.setenv(LIB_DIR="/opt/local/lib")
#  Sys.setenv(INCLUDE_DIR="/opt/local/include")
#  install.packages("curl", type="source")
#  library(curl)
#  library(dataone)
#  
#  # Remove the environment variables as they are no longer needed.
#  Sys.setenv(LIB_DIR="")
#  Sys.setenv(INCLUDE_DIR="")

## ---- eval=F------------------------------------------------------------------
#  Sys.setenv(LIB_DIR="/usr/local/opt/curl/lib")
#  Sys.setenv(INCLUDE_DIR="/usr/local/opt/curl/include")
#  install.packages("curl", type="source")
#  library(curl)
#  library(dataone)
#  
#  # Remove the environment variables as they are no longer needed.
#  Sys.setenv(LIB_DIR="")
#  Sys.setenv(INCLUDE_DIR="")