If I run Travis CI with R 3.2 in my test that runs these lines:
devtools::install_github("mnpopcenter/ripums")
ddi <- read_ipums_ddi(ripums_example("cps_00006.xml"))
ipums_view(ddi, launch = FALSE)
I get the following error:
unable to load shared object '/usr/lib/R/site-library/jsonlite/libs/jsonlite.so':
/usr/lib/R/site-library/jsonlite/libs/jsonlite.so: undefined symbol: R_GetConnection
Any ideas?