failed ubuntu install

[nickblock]

sudo gem install teapot

`Building native extensions. This could take a while...
ERROR: Error installing teapot:
ERROR: Failed to build gem native extension.

current directory: /var/lib/gems/2.3.0/gems/rainbow-2.2.2/ext

/usr/bin/ruby2.3 mkrf_conf.rb

current directory: /var/lib/gems/2.3.0/gems/rainbow-2.2.2/ext
/usr/bin/ruby2.3 -rubygems /usr/share/rubygems-integration/all/gems/rake-10.5.0/bin/rake RUBYARCHDIR=/var/lib/gems/2.3.0/extensions/x86_64-linux/2.3.0/rainbow-2.2.2 RUBYLIBDIR=/var/lib/gems/2.3.0/extensions/x86_64-linux/2.3.0/rainbow-2.2.2`

Ubuntu 16.04

[ioquatix]

Hi, yeah, I think there is a bug in Rainbow on Ubuntu - I recall seeing this in completely unrelated (to teapot) ruby systems. I will check it out, thanks.

[ioquatix]

Here it is: ku1ik/rainbow#44 and the solution was to use something other than Rainbow...

[ioquatix]

It looks like this will be fixed in Rainbow 3.0 but I'm not sure what the schedule to release that is...

[ioquatix]

Can you try the following:

gem install rainbow -v 2.1.0

then

gem install teapot

and let me know the output of both. Thanks.

[ioquatix]

It looks like the author of Rainbow would like you to try the current head.

ku1ik/rainbow#58 (comment)

[nickblock]

I installed the rainbow 2.1.0, apparently successfully,
But I still get the same error (ERROR: Failed to build gem native extension), when doing "gem install teapot"

Sorry I'm not familiar with gem at all so I wouldn't know where to start checking out a repos and using that. I just came here from reddit, someone recommended this as a package manager for c++. Maybe I'll give it another go at a later date! Cheers.