v0.5.3 has a broken dependency chain in PDK docker image

[sgnn7]

Describe the Bug

We're having issues running pdk tests in puppet/pdk container with the following gem definition in the Gemfile of our module:

group :development do
  gem "puppet-module-posix-dev-r#{minor_version}", '~> 0.4',     require: false, platforms: [:ruby]
end

This results in:

13:08:46  An error occurred while installing http-parser (1.2.2), and Bundler cannot
13:08:46  continue.
13:08:46  Make sure that `gem install http-parser -v '1.2.2' --source
13:08:46  'https://rubygems.org/'` succeeds before bundling.
13:08:46  
13:08:46  In Gemfile:
13:08:46    puppet-module-posix-dev-r2.5 was resolved to 0.5.3, which depends on
13:08:46      puppet_litmus was resolved to 0.18.4, which depends on
13:08:46        rspec_honeycomb_formatter was resolved to 0.2.1, which depends on
13:08:46          honeycomb-beeline was resolved to 2.3.0, which depends on
13:08:46            libhoney was resolved to 1.15.0, which depends on
13:08:46              http was resolved to 4.4.1, which depends on
13:08:46                http-parser

I am guessing that it's a problem with the dependencies or the image itself.

Earliest working gem version that passes this point is puppet-module-posix-dev-r2.5 v0.5.0

Expected Behavior

No problems running tests

Steps to Reproduce

Steps to reproduce the behavior:

Easy reproduction:

1. Clone our project: https://github.com/cyberark/conjur-puppet
2. You must have a clean checkout of this repo - problem is cache related
3. Run ./scripts/test.sh

Minimal reproduction

• Gemfile

source 'https://rubygems.org'

group :development do
  gem "puppet-module-posix-dev-r2.5", '0.5.3',      require: false, platforms: [:ruby]
end

• metadata.json

{
  "name": "cyberark-conjur",
  "version": "3.1.0",
  "dependencies": [
    {
      "name": "puppetlabs/registry",
      "version_requirement": ">= 3.1.0 < 4.0.0"
    }
  ],
  "operatingsystem_support": [
    {
      "operatingsystem": "Ubuntu",
      "operatingsystemrelease": [
        "20.04"
      ]
    }
  ],
  "requirements": [
    {
      "name": "puppet",
      "version_requirement": ">= 6.0.0 < 7.0.0"
    }
  ],
  "pdk-version": "1.18.1",
  "template-url": "pdk-default#1.18.1",
  "template-ref": "tags/1.18.1-0-g3d2e75c"
}

• Run docker run --rm -it -w /root -v $(pwd)/Gemfile:/root/Gemfile -v $(pwd)/metadata.json:/root/metadata.json puppet/pdk test unit

Environment

pdk (INFO): Using Ruby 2.5.8
pdk (INFO): Using Puppet 6.17.0

• Version v0.5.3
• Platform: puppet/pdk DockerHub container

Additional Context

Add any other context about the problem here.

[sgnn7]

The problem here afaict (and I don't know where to file it) turns out that:

• As soon as we have a gem that's not baked into the puppet/pdk image gem cache triggers a bundle install
• puppet-module-posix-dev-r2.5 gem through cascading dependency chain ends up depending on http-parser = 1.2.2
• http-parser is a native extension and as such requires build tooling in the VM (specifically the gcc and make packages)
• puppet/pdk does not have those packages installed
• Build breaks

[sgnn7]

Problem also seems to occur only on the first run of the pdk image invocation on a real repo so it is definitely gem cache related.

[sgnn7]

Closing this issue now that the real cause has been pinpointed and a replacement issue filed in the appropriate repo.