renv & rstan on Mac OS — choose a cache path without spaces

Summary:

On Mac, rstan does not compile when StanHeaders are in the renv cache, which, by default is under /Library/Application Support/renv, i.e. a path with a space. You can tell you have this problem, if the error message mention paths starting "Support".

Workaround:

To circumvent this, you can put the renv cache under a path without spaces by following these instructions: https://rstudio.github.io/renv/reference/paths.html
I went with /Library/Frameworks/renv/.

Reproducible Steps:

renv::init()
renv::install("rstan")
library(rstan)
scode <- "
parameters {
  real y[2]; 
} 
model {
  y[1] ~ normal(0, 1);
  y[2] ~ double_exponential(0, 2);
} 
"
fit1 <- stan(model_code = scode, iter = 10, verbose = FALSE) 
print(fit1)

RStan Version:

‘2.19.3’

R Version:

4.0.1

Operating System:

OS X Mojave 10.14.6

Start by reproducing the issue with the listed renv::init(), renv::install("rstan"), library(rstan), and stan() steps on OS X Mojave. Investigate how the renv cache path containing spaces affects StanHeaders during compilation; done means the example compiles and runs without the reported path error.