Gem::ConflictError

[sudarshan-narayanan-we45]

While trying to run calabash-android against a target app, I am facing the following error.

$ calabash-android run my-calculator.apk
Unable to activate luffa-2.0.0, because json-2.1.0 conflicts with json (~> 1.8) (Gem::ConflictError)
/Users/sudarshannarayanan/.rvm/rubies/ruby-head/lib/ruby/2.6.0/rubygems/specification.rb:2304:in raise_if_conflicts' /Users/sudarshannarayanan/.rvm/rubies/ruby-head/lib/ruby/2.6.0/rubygems/specification.rb:1420:in activate'
/Users/sudarshannarayanan/.rvm/rubies/ruby-head/lib/ruby/2.6.0/rubygems/specification.rb:1454:in block in activate_dependencies' /Users/sudarshannarayanan/.rvm/rubies/ruby-head/lib/ruby/2.6.0/rubygems/specification.rb:1440:in each'
/Users/sudarshannarayanan/.rvm/rubies/ruby-head/lib/ruby/2.6.0/rubygems/specification.rb:1440:in activate_dependencies' /Users/sudarshannarayanan/.rvm/rubies/ruby-head/lib/ruby/2.6.0/rubygems/specification.rb:1422:in activate'
/Users/sudarshannarayanan/.rvm/rubies/ruby-head/lib/ruby/2.6.0/rubygems.rb:223:in rescue in try_activate' /Users/sudarshannarayanan/.rvm/rubies/ruby-head/lib/ruby/2.6.0/rubygems.rb:216:in try_activate'
/Users/sudarshannarayanan/.rvm/rubies/ruby-head/lib/ruby/2.6.0/rubygems/core_ext/kernel_require.rb:123:in rescue in require' /Users/sudarshannarayanan/.rvm/rubies/ruby-head/lib/ruby/2.6.0/rubygems/core_ext/kernel_require.rb:34:in require'
/Users/sudarshannarayanan/Projects/CalabashDemo/features/support/env.rb:1:in <top (required)>' /Users/sudarshannarayanan/.rvm/gems/ruby-head@calabash/gems/cucumber-3.1.2/lib/cucumber/glue/registry_and_more.rb:107:in load'
/Users/sudarshannarayanan/.rvm/gems/ruby-head@calabash/gems/cucumber-3.1.2/lib/cucumber/glue/registry_and_more.rb:107:in load_code_file' /Users/sudarshannarayanan/.rvm/gems/ruby-head@calabash/gems/cucumber-3.1.2/lib/cucumber/runtime/support_code.rb:144:in load_file'
/Users/sudarshannarayanan/.rvm/gems/ruby-head@calabash/gems/cucumber-3.1.2/lib/cucumber/runtime/support_code.rb:85:in block in load_files!' /Users/sudarshannarayanan/.rvm/gems/ruby-head@calabash/gems/cucumber-3.1.2/lib/cucumber/runtime/support_code.rb:84:in each'
/Users/sudarshannarayanan/.rvm/gems/ruby-head@calabash/gems/cucumber-3.1.2/lib/cucumber/runtime/support_code.rb:84:in load_files!' /Users/sudarshannarayanan/.rvm/gems/ruby-head@calabash/gems/cucumber-3.1.2/lib/cucumber/runtime.rb:272:in load_step_definitions'
/Users/sudarshannarayanan/.rvm/gems/ruby-head@calabash/gems/cucumber-3.1.2/lib/cucumber/runtime.rb:68:in run!' /Users/sudarshannarayanan/.rvm/gems/ruby-head@calabash/gems/cucumber-3.1.2/lib/cucumber/cli/main.rb:34:in execute!'
/Users/sudarshannarayanan/.rvm/gems/ruby-head@calabash/gems/cucumber-3.1.2/bin/cucumber:9:in <top (required)>' /Users/sudarshannarayanan/.rvm/gems/ruby-head@calabash/bin/cucumber:23:in load'
/Users/sudarshannarayanan/.rvm/gems/ruby-head@calabash/bin/cucumber:23:in `

'

Here is my gemlist.

$ gem list

*** LOCAL GEMS ***

awesome_print (1.8.0)
backports (3.11.4)
bigdecimal (default: 1.3.4)
builder (3.2.3)
bundler (default: 2.0.0.pre.2, 1.17.1)
calabash-android (0.9.8)
calabash-cucumber (0.21.8)
clipboard (1.1.2)
cmath (default: 1.0.0)
command_runner_ng (0.1.4)
concurrent-ruby (1.1.3)
csv (default: 3.0.1)
cucumber (3.1.2)
cucumber-core (3.2.1)
cucumber-expressions (6.0.1)
cucumber-tag_expressions (1.1.1)
cucumber-wire (0.0.1)
date (default: 1.0.0)
dbm (default: 1.0.0)
diff-lcs (1.3)
e2mmap (default: 0.1.0)
edn (1.1.1)
escape (0.0.4)
etc (default: 1.0.1)
fcntl (default: 1.0.0)
fiddle (default: 1.0.0)
fileutils (default: 1.1.0)
forwardable (default: 1.2.0)
gdbm (default: 2.0.0)
geocoder (1.5.0)
gherkin (5.1.0)
httpclient (2.8.3)
i18n (0.9.5)
io-console (default: 0.4.6)
ipaddr (default: 1.2.0)
irb (default: 0.9.6)
json (default: 2.1.0, 1.8.6)
logger (default: 1.2.7)
luffa (2.0.0)
matrix (default: 0.1.0)
multi_json (1.13.1)
multi_test (0.1.2)
mutex_m (default: 0.1.0)
openssl (default: 2.1.2)
ostruct (default: 0.1.0)
prime (default: 0.1.0)
psych (default: 3.1.0.pre2)
rdoc (default: 6.1.0.beta2)
retriable (2.0.2)
rexml (default: 3.1.7.3)
rss (default: 0.2.7)
rubyzip (1.2.2)
run_loop (4.1.0)
scanf (default: 1.0.0)
sdbm (default: 1.0.0)
shell (default: 0.7)
slowhandcuke (0.0.3)
stringio (default: 0.0.2)
strscan (default: 1.0.0)
sync (default: 0.1.0)
thor (0.20.3)
thwait (default: 0.1.0)
tracer (default: 0.1.0)
webrick (default: 1.4.2)
zlib (default: 1.0.0)

I would like to know how to resolve the json conflict and execute the Gherkin script.

[schnapzz]

I've had luck removing the json 2.1.0 dependency in the past and only have json 1.8.6 installed. This clears up most of my issues with Calabash and i don't have anything else depending on json 2.1.0 anyway.
Don't know if this is still relevant.

[antuking]

The same issue and still don't resolve this one yet.
@schnapzz How to downgrade the json to 1.8.6?

[jmoody]

Let's remove the json version dependency all together.

The gemspec should contain "json" with no version.

[schnapzz]

@antuking i removed all other json gems, so the only one i had installed was json 1.8.6. Luckily i had no other gems depending on newer versions of the json gem.
@jmoody Will this be added to the next version of calabash?

[antuking]

I still receive the error after uninstall all of json versions and only install 1.8.6.

Unable to activate luffa-2.0.0, because json-2.1.0 conflicts with json (~> 1.8) (Gem::ConflictError)

And here is my Gem file

@schnapzz What is it wrong here? (Ruby 2.6.1, Rubyzip 1.2.1, calabash-android 0.9.5)

[schnapzz]

@antuking It would seem that you still have json 2.1.0 installed as a gem. If you do a gem list, do you have both multiple json gems installed?

[antuking]

Right @schnapzz , i tried to remove 2.1.0 but didn’t affect. Besides, i set 1.8.6 is default version.
json (default: 2.1.0, default: 1.8.6)

I used both cmd for this one

gem uninstall json:2.1.0
gem uninstall json -v "2.1.0"

[jmoody]

@antuking

Yeah, that is not good.

Here is what I recommend: remove the Luffa dependency. That gem is used for its Version class.

Copy the version class from run-loop and add it (properly name spaced) to this gem.

https://github.com/calabash/run_loop/blob/develop/lib/run_loop/version.rb

Is that something you can do?

[jmoody]

@antuking

I am in the process of releasing luffa 2.1.0; it will not have a dependency on specific json or bundler version. It would be good to remove the Luffa::Version code from this gem.

[antuking]

Thanks @jmoody , i'll try when luffa release with ver2.1.0. Btw, i'm working around with your suggest.

[jmoody]

luffa 2.1.0 released.

[antuking]

I upgraded the luffa and force remove the json default in gems. That's great. Many thanks @jmoody

[jmoody]

To remove gems:

$ gem update --system
$ gem uninstall -Vax --force --no-abort-on-dependent <gem name>