Rstan does not install mac Big sur & RStudio toolchain fails

Interfaces RStan
1

I attempt to install RStan on mac Big sur toolchain pkg fails to install and I can’t install RStan

2

We need more information, what commands/instructions are you following and what error did you get?

3

Hi, thanks for your attention. I really appreciate it.

The macOS R toolchain installer did not work for me.

The issue was finally solved by installing Xcode from AppStore and gfortran for Big Sur with the intel operator separately.

4

Hi, I am having the same trouble. I am using the installer from Release To R 4.0.0 and Beyond! · rmacoslib/r-macos-rtools · GitHub but it encounters an error.

I am not as tech savvy to follow medi_ebrahimi’s vague description of the solution. Could you provide me with some concrete steps?

5

I’m also having same problem. I’m running on Mac version 11.4 with M1 chip. Stan doesn’t install and can’t get toolchain to install either.

EDIT: I fixed the problem by installing Xcode manually and then installed Stan through R and it worked.