[go-nuts] Idea for versioning in the new Go package manager.

[Martin Bertschler]

Hello Gophers!

Yesterday I attended a tech meetup and was introduced to the Elm language 
. The one thing that really stuck with me was how the 
Elm package manager handles semantic versioning for the package developers. 
As soon as things are added to the packages API, the minor version of the 
package is automatically bumped, and if the existing API of the package is 
changed, the major version is bumped.

I think this could be a great idea for the new package manager, since the 
whole Go ecosystem values stability and great tooling a lot. Some benefits 
of this feature that I can imagine:

   - Not having to think about the next version number, especially in small 
   projects where I just want to publish some new code. Let the tool just 
   choose one for you.
   - No accidental changes the public API during development, the tool 
   would point out the API changes to you before publishing. If you didn't 
   intend the change you could fix it.
   - Always correct usage of semantic versioning, that the whole ecosystem 
   can depend on. This could enable automatic updates to always the newest 
   patch version. 

Implementing it should not be hard because we already have things like 
https://golang.org/cmd/api/.

The full specification on how Elm handles that can be found here: 
https://github.com/elm-lang/elm-package. 

What are your thoughts on this matter?

Best,
Martin

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Re: [go-nuts] cgo and OSX "main thread"

[Martin Bertschler]

There is also a great wiki article on how to execute functions on the main 
thread from multiple goroutines. It helped me a lot when I did some GUI 
development experiments.
https://github.com/golang/go/wiki/LockOSThread

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