Script to reproduce bundler issue #5436

repro-5346.sh

#!/bin/sh

set -ex

mkdir -p /tmp/repro-5346
cd /tmp/repro-5346

cat > Gemfile <<EOF
source 'https://rubygems.org'
require 'json'
gem 'rake'
EOF

bundle env
# Bundler   1.14.1
# Rubygems  2.5.2
# Ruby      2.3.3p222 (2016-11-21 revision 56859) [x86_64-darwin15]
# Git       2.10.1 (Apple Git-78)
# Platform  x86_64-darwin-15

# Expected behavior: should work, works with bundler 1.13.7
# Observerd behavior: bundle install --deployment fails with bundler 1.14.1:
# You are trying to install in deployment mode after changing
# your Gemfile. Run `bundle install` elsewhere and add the
# updated Gemfile.lock to version control.
# 
# You have deleted from the Gemfile:
# * json

bundle install --path vendor/bundle
bundle exec rake --version
bundle install --deployment