Changing font in Sublime Text 3

Question

I want to change the font in Sublime Text 3 to Roboto Mono, so I downloaded the file and installed it on my computer (macOS). Then I go and open Sublime Text 3, go to "Settings --> Preferences", getting to the split screen where I put into the right side this:

"font_face": "Roboto Mono",
"font_size": 10, 

Now this is supposed to work but it doesn't.

Can someone advise please?

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Update: The error I'm getting is:

Unable to save ~/Library/Application Support/Sublime Text 3/Packages/User/Preferences.sublime-settings
Error: No such file or directory

Answer 1

Follow this support article from Apple for installing fonts and check if you have installed it properly.

If you did, check the name of installed fonts.

Then, go to Settings -> Preferences and on the right hand side(User settings) place:

{
    "font_face": "Roboto Mono",
    "font_size": 10
}

Answer 2

try changing font size (to 15 for instance) using this:

"font_size": 15

updated my font in my case.