Improve startup time on macOS

[erf]

Abstract

Startup time now on macOS is about ~3 seconds whilst other popular terminals open in about 1 second.

Motivation

Specification

[christianparpart]

Many thanks for all of your tickets, @erf. On this one, this is because it's an x86-64 build running on an Apple M1 (ARM64), where Apple Rosetta 2 is doing an initial JIT-transpiling into an ARM64 executable. I realise that Alacritty is faster, but Warp terminal is slower than Contour in startup-times.

I am sure there's something we can optimize in general startup performance, regardless of the platform (MacOS), which is initial font fallback discovery (because that's done at process startup, but could easily be cached, or lazy-loaded as needed).

We could also start providing native Apple M1 executables on the release page (I am mainly using an Apple M1 as well, where i'm - apart from running OS/X - also run ARM64 based Linux VMs daily). 🤔

[erf]

That makes sense! i Run on a m1 macbook. Building a universal build including Apple Silicon would probably make it much faster!

BTW: I tested against Terminal.app, iTerm2.app, Wezterm and Ghostty and they were all about 1 sec