Ruby claims "Unable to resolve dependencies" when they are met

Ruby
1

I tried installing beaker-rspec and it was failing with:

ERROR:  While executing gem ... (Gem::DependencyError)
Unable to resolve dependencies: rspec requires rspec-core (~>
2.99.0), rspec-expectations (~> 2.99.0), rspec-mocks (~> 2.99.0)

Despite the fact those Gems are already installed:

gem list |grep rspec

rspec (3.1.0)
rspec-core (3.1.7)
rspec-expectations (3.1.2)
rspec-its (1.1.0)
rspec-mocks (3.1.3)
rspec-puppet (1.0.1)
rspec-support (3.1.2)
serverspec (2.7.0)

I tried to force it with --no-dependencies and manually installing
dependencies but I get this error when I run it:

usr/lib/ruby/1.9.1/rubygems/dependency.rb:247:in `to_specs’: Could not
find serverspec (~> 1.0) amongst [CFPropertyList-2.2.8, active
support-4.1.8, addressable-2.3.6, akami-1.2.2,
archive-tar-minitar-0.5.2, autoparse-0.3.3, aws-sdk-1.59.1,
aws-sdk-v1-1.59.1, backport
s-3.6.4, backports-3.6.0, beaker-2.0.0, beaker-rspec-4.0.0,
builder-3.2.2, bundle-0.0.1, bundler-1.7.8, bundler-1.7.7,
chronic_duratio
n-0.10.6, cucumber-1.3.17, cucumber-puppet-0.3.7, daemons-1.1.9,
diff-lcs-1.2.5, docile-1.1.5, docker-api-1.17.0, eventmachine-1.0.3,
excon-0.42.1, extlib-0.9.16, facter-2.3.0, facter-1.7.6, fakefs-0.6.0,
faraday-0.9.0, fission-0.5.0, fog-1.25.0, fog-brightbox-0.7.1,
fog-core-1.25.0, fog-json-1.0.0, fog-profitbricks-0.0.1,
fog-radosgw-0.0.3, fog-sakuracloud-0.1.1, fog-softlayer-0.3.25,
fog-terremark
-0.0.3, fog-vmfusion-0.0.1, fog-voxel-0.0.2, fog-xml-0.1.1,
formatador-0.2.5, gem-man-0.3.0, gherkin-2.12.2,
google-api-client-0.7.1,
gyoku-1.2.2, gyoku-1.1.0, hiera-1.3.4, hiera-puppet-1.0.0,
hiera-puppet-helper-1.0.1, highline-1.6.21, hocon-0.0.6, httpi-2.3.0,
httpi
-2.2.5, i18n-0.6.11, inflecto-0.0.2, inifile-3.0.0, inifile-2.0.2,
ipaddress-0.8.0, json-1.8.1, json_pure-1.8.1, jwt-1.2.0, kramdown-1
.5.0, launchy-2.4.3, logutils-0.6.1, macaddr-1.7.1, markdown-1.2.0,
metaclass-0.0.4, mime-types-2.4.3, mime-types-1.25.1, mini_portile
-0.6.1, mini_portile-0.6.0, mini_portile-0.5.3, minitest-5.4.3,
mocha-1.1.0, multi_json-1.10.1, multi_test-0.1.1, multipart-post-2.0.0
, net-scp-1.2.1, net-ssh-2.9.1, netrc-0.9.0, netrc-0.8.0,
nokogiri-1.6.5, nori-2.4.0, numerizer-0.2.0, numerizer-0.1.1,
opennebula-4.1
0.1, props-1.1.2, puppet-2.7.26, puppet-lint-1.1.0, puppet-syntax-1.3.0,
puppetlabs_spec_helper-0.8.2, rack-1.5.2, rake-10.4.2, rbvmom
i-1.8.2, rbvmomi-1.8.1, rest-client-1.7.2, retriable-1.4.1, rspec-3.1.0,
rspec-core-3.1.7, rspec-expectations-3.1.2, rspec-its-1.1.0,
rspec-mocks-3.1.3, rspec-puppet-1.0.1, rspec-support-3.1.2,
rubyzip-1.1.6, rvc-1.8.0, savon-2.8.0, savon-2.6.0, serverspec-2.7.0,
sign
et-0.6.0, simplecov-0.9.1, simplecov-html-0.8.0, spec-5.3.4,
specinfra-2.10.2, systemu-2.6.4, templater-1.0.0, terminal-table-1.4.5,
t
extutils-0.10.0, thin-1.6.3, thread_safe-0.3.4, trollop-2.0,
tzinfo-1.2.2, unf-0.1.4, unf_ext-0.0.6, uuid-2.3.7, uuidtools-2.1.5,
wasa
bi-3.3.1, wasabi-3.3.0, yard-0.8.7.6, zip-2.0.2] (Gem::LoadError)

I’ve tried gem pristine --all and re-installing rubygems package but
it’s still failing.

2

your problem is:

“rspec-core (~>2.99.0)” does not match “rspec-core (3.1.7)”
same with
“serverspec (~> 1.0)” does not match “serverspec (2.7.0)”

for you, you might need to investigate, what does require something else
in your list

i did look and the problem is that “beaker-rspec” does need an older
version of “serverspec” and that does need an older version of rspec …

the problem is also that “beaker-rspec” does require rspec before
“serverspec” which makes it even more broken …

for you: imo “beaker-rspec” itself does need to be fixed, but i cant
help you with that

3

Thanks very much for your help, I wasn’t familiar with the ~> syntax and
read up on it after your post. I was confused though by the rspec
requirement, since beaker-rspec doesn’t peg a version. Again thanks for
your help I’ll log an issue with the beaker-rspec maintainers.