Re: [arch-general] libicuuc.so.54: cannot open shared object

libicu.so.55 just hit [extra], but I can't see R depending on icu so maybe it has some plugin which requires icu which you need to rebuild?

If you run the following $ LD_DEBUG=all ld /usr/lib64/R/bin/exec/R You should be able to figure out which library that R links with that needs icu (i.e. an indirect dependency).