I have an older MacBook that can't be upgraded past OSX 10.7.5. What is the latest binary release of the Go tools can I install on it? According to the golang downloads page, the current "featured" download (1.6.2) requires OSX 10.8, but for most prior releases, the page doesn't state the OS version compatibility requirements.
Go 1.4.2 was the last official release that officially mentioned support for versions of OSX before 10.8. For that release there were two binary packages: one with an osx10.8 suffix, and one with an osx10.6 suffix.
Already in Go 1.5, only OSX 10.8 was mentioned as being supported. See: https://web.archive.org/web/20150820055435/https://golang.org/dl/
Of course, you can download any version and build it from source, and that's what I'd do if I were stuck with an old version of OSX.