Gem install rails doesn’t do anything

I installed rvm, I still don't know why there was such a mess but now I can just force a certain ruby version easily, and I know where all the gems get installed into. (into the rvm directory) Works for me.

Mike Clark from PragmaticStudio Solved this for me!

Ah, looks like it’s an issue with the sqlite3 v1.4.0 gem which was released on February 4. There’s a fix in the works:

https://github.com/rails/rails/issues/35153

In the meantime, you can fall back to v1.3.6 by adding that version to the “sqlite3” line in your Gemfile, like so:

gem "sqlite3", "~> 1.3.6”

Then make sure to “bundle install”.

Anyway, that solved the issue for me. I also found this helpful:

https://stackoverflow.com/questions/54527277/cant-activate-sqlite3-1-3-6-already-activated-sqlite3-1-4-0/54606137#54606137

Give that a try and see if it works for you.