For me it was Go. The toolchain just stays out of my way. I find Go much easier to deal with at a project level than anything else. YMMV because I'm a command-line kind of guy.

Many of you will assume I'm a moron for choosing such a retrograde, simpleminded language. It's true! I am a moron compared to most HN readers. And your language is much more sophisticated than mine and had generics long before and didn't need a make keyword and stuff. No disagreement there.

All I know is I can get the job done faster in Go than with Python, and I have type checking too. Plus a sane-ish package manager and a single, stable ecosystem. Plus I can deploy a single executable that even lets me embed assets inside it. It just stays the hell out of my way.