Encountering user error (could not create file system event stream)

[dredozubov]

I'm getting this on OS X 10.12.6 Sierra and it reproduces when running ghcid --command="./hadrian/ghci.sh" on ghc repo as was initially reported here. I'm not sure how to create a smaller reproduction case yet, but I can provide more information if it's not reproducible outside my machine.

[goldfirere]

I just hit this same problem, on MacOS 10.13.6.