[DRE-maint] Bug#867599: gem2deb fails to install pure ruby part when a gem has both pure ruby and native libs

[Antonio Terceiro]

Control: tag -1 + moreinfo

On Fri, Jul 07, 2017 at 10:43:20PM +0530, Pirate Praveen wrote:
> package: gem2deb
> version: 0.34
> 
> gem2deb is not installing the pure ruby libraries of grpc (ruby-grpc is
> in alioth) and tests fail.

yes it is installing the pure ruby libraries

> ──────────────────────────────────────────────────────────────────────────────┐
> │ Run tests for ruby2.3 from debian/ruby-tests.rake
>       │
> └──────────────────────────────────────────────────────────────────────────────┘
> 
> RUBYLIB=/<<PKGBUILDDIR>>/debian/ruby-grpc/usr/lib/x86_64-linux-gnu/ruby/vendor_ruby/2.3.0:.
> GEM_PATH=debian/ruby-grpc/usr/share/rubygems-integration/2.3.0:/var/lib/gems/2.3.0:/usr/lib/x86_64-linux-gnu/rubygems-integration/2.3.0:/usr/share/rubygems-integration/2.3.0:/usr/share/rubygems-integration/all
> ruby2.3 -S rake -f debian/ruby-tests.rake
> /usr/bin/ruby2.3 /usr/bin/rspec --pattern
> ./src/ruby/spec/\*\*/\*_spec.rb --format documentation
> /<<PKGBUILDDIR>>/src/ruby/lib/grpc/errors.rb:48:in `<class:BadStatus>':
> uninitialized constant GRPC::Core (NameError)

if the pure ruby libraries were not being installed, you would get a
LoadError (i.e. a `require` statement failed), but that's not what is
happening here.

gem2deb does install the Ruby code even when there is a C extension, and
there are several automated tests for that. If it didn't, we wouldn't
be learning that this late in the game.

I don't think this is a bug in gem2deb, but you can convince me
otherwise.
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