A few weeks ago all stable versions of rstudio have been removed from portage. All the remaining versions of rstudio require ~arch masked versions of Haskell to install. This new versions of Haskhell is failing to install. So I can not install rstudio. Please either place the older, stable versions of rstudio back in portage or fix the Haskell dependencies and mark one of the newer versions of rstudio stable so that I can have at least one stable version of Rstudio. Please strive to maintain at least one stable version of sci-mathematics/rstudio in portage at all times. Thank you
Several months ago, the Haskell team decided to destabilise almost all (or all?) of dev-haskell/* because of how hard it was to maintain compatibility for both unstable and stable keywords (essentially double the work, because both the ~ and stable versions needed to be independently correct with accurate dependencies). (This is made worse by the fact that, like OCaml, Haskell has an unstable ABI and requires all dependent packages to be rebuilt regularly.) I recommend you add an entry like: dev-haskell/* sci-mathematics/rstudio ... to package.accept_keywords. I completely sympathise (and would ultimately like stable Haskell to come back) but just explaining the situation here + a workaround for you. Please also report in a separate bug why/how Haskell is failing to install and we can sort you out with that. It's often an Out Of Memory (OOM) issue.