I was updating Julia packages over an unstable internet connection and I didn't like how fast the spinners were running. I think they spin about twice per second.

I looked at the Pkg.jl code, and I found that setting the environment variable CI=true would disable all progress output. That's good, but I was looking for something fancier – just slowing down the progress output, not eliminating it.

I think it would be possible to make the spinner speed configurable with a rather small code change. I think this line

One could add a new global variable

const PRECOMPILE_SPINNER_INTERVAL = Ref(0.1)

to the code, and then create the Timer via Timer(0; interval=PRECOMPILE_SPINNER_INTERVAL[]). This would allow changing the spinners by setting a global variable. A similar mechanism is already used in MiniProgressBars.jl where two variables are defined