"brew formula" installation logs

Question

Sometimes I install a formula with Brew, and I get a series of warnings and notifications. At some point later, I want to go back and read what problems the installation found.

Does brew automatically keep track of these installation logs? If not, is there any way I could instruct it (perhaps with a parameter) to always record the installation log on a file?

Answer 1

Logs are stored in ~/Library/Logs/Homebrew.
You can browse this in Finder or using Console.app.

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If you want to save your own log of an install, you can use…

brew install <formula> 2>&1 | tee install.log

^{Source: https://github.com/Homebrew/homebrew/issues/10430}