Reading your short list triggered a flashback. I struggled with everything you listed, probably more.
When I made a run at getting an existing RoR project running on my Mac (~1 year ago), there was no shortage of howtos and advice. The problem was resolving all the contradictory information.
As moe points out, the project home page should have the single source of validated truth on how to get RoR running on a Mac. Minimally.
That such a source of truth didn't exist led me to conclude that Rails was run by amateurs and to not be taken seriously.
Reading your short list triggered a flashback. I struggled with everything you listed, probably more.
When I made a run at getting an existing RoR project running on my Mac (~1 year ago), there was no shortage of howtos and advice. The problem was resolving all the contradictory information.
As moe points out, the project home page should have the single source of validated truth on how to get RoR running on a Mac. Minimally.
That such a source of truth didn't exist led me to conclude that Rails was run by amateurs and to not be taken seriously.