How to create a Ruby string within a CocoaPod PodSpec?

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There is a common trick to re-use a string within a pod spec:

  s.version = '0.0.2'
  s.source = { :git => ..., :tag => s.version }

By reusing the s.version string after it's assigned, I don't have to remember to change two fields when I update my podspec.

But, what I'd really like to do is tag my code with "v0.0.2", not "0.0.2". So I tried to just create a new string by prepending a 'v' to the version:

  s.source = { :git => ..., :tag => 'v' +  s.version }

However, that bombs the pod command.

I recall seeing a trick while searching for something else a while ago that showed how to inject Ruby code into a spec, but I cannot find it now, and even if I could not sure it addressed what I'm trying to do.

So, my question is, is this even possible, and if so, how do I accomplish it?

asked 56 secs ago

David H

22.2k