Thank you for your quick response!
I switched the package to both babel-icelandic and hyphen-icelandic, but still got an error message.
Reprex:
I open a fresh project with no base project. I create a new .Rmd file, which prompts me to update several packages to be able to compile an rmarkdown document.
I open the terminal and type the code given in the previous community post:
tlmgr init-usertree
tlmgr option repository ftp://tug.org/historic/systems/texlive/2015/tlnet-final
tlmgr --no-persistent-downloads install babel-icelandic
I then try to knit to pdf the following rmarkdown file:
---
title: ""
author: ""
date: ""
output:
pdf_document: default
header-includes:
- \usepackage[icelandic]{babel}
---
Í þessu verkefni munt þú vinna með gögn um Alþingismenn og ræður á Alþingi frá 1991 til 2018. Upprunalegu gögnin eru aðgengileg á vef Alþingis, en xxxxx xxxxx xxxxx hefur umbreytt og bætt við ýmsum viðbótarupplýsingum við gögnin.
The file above compiles, but with several warning messages, including:
Warning message:
Package babel Warning: No hyphenation patterns were preloaded for
(babel) the language `Icelandic' into the format.
(babel) Please, configure your TeX system to add them and
(babel) rebuild the format. Now I will use the patterns
(babel) preloaded for english instead on input line 54.
Obviously, the resulting pdf file includes incorrectly hyphenated words. "Upprunalega" should be hyphenated as such, upp-runa-lega.
I hope this gives you sufficient information to troubleshoot.