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Bundler 1.10.x and Warbler 1.4.7 Are NOT Friends

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On the off chance that you are deploying Ruby apps as Java Servlets using JRuby/Warbler, beware of recent releases of Bundler. Bundler 1.10.0 came out this past Sunday (May 28, it looks like), and it doesn’t play nicely with Warbler.

The failure happens when you first use Bundler >= 1.10 to build a dependency tree prior to running warble, whereupon warble blows up with a distinctive error message like ArgumentError: dependency name must be a String, was #<Bundler::StubSpecification:0x1e69dff6.

I’m a bit perplexed by @indirect’s comment on the issue linked above that “Bundler’s internal Ruby APIs are not stable and may change”; sure, but this seems to me like the kind of change that merits a major version bump. If a method on an object used to return a String, and now it returns a Bundler::StubSpecification, that’s not an insignificant change! At least perhaps include a to_s method that spits out the string that would previously have been returned?

I dunno, maybe there’s a policy doc somewhere on the Bundler site which defines what the internal Ruby APIs are that one should assume will change at any moment; I searched a bit and couldn’t find one, but I apologize in advance if the failure is in my searching.

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