v1.14.0.pre.1

Features:

• bundle doctor first runs bundle check (@segiddins)
• the bundler trampoline is automatically enabled when the target version is greater than bundler 2 (@segiddins)
• gem checksums returned by rubygems.org are validated when installing gems (#4464, @segiddins)
• use the git username as a github username when running bundle gem (@JuanitoFatas)
• show more context when the resolver conflicts on required ruby and rubygems versions (@segiddins)
• improve platform support by allowing bundler to pick the best platform match during dependency resolution, enabled with the specific_platform setting (#4295, #4896, @segiddins)
• always prompt the user for a password when using sudo (#3006, @segiddins)
• support running without a home directory (#4778, @segiddins)
• print a warning when the gemfile uses a platform conditional that will exclude the gem from all lockfile platforms (@segiddins)
• add the force_ruby_platform setting to force bundler to install ruby-platform gems, even on other platforms (#4813, @segiddins)
• add conservative update options to bundle lock (#4912, @chrismo)
• improve bundle outdated output to group gems by group (@ryanfox1985)
• add conservative update options to bundle update (#5065, #5076, @chrismo)
• print the output of bundle env as github-flavored markdown, making it easier to preserve formatting when copy-pasting into a new issue (@segiddins)
• configure the persistence file when using bundle gem with rspec (@segiddins)
• add support for the ruby_25 gemfile filter (@amatsuda)
• when installing with a lockfile that is missing dependencies, allow installation to proceed (but without parallelism) (@segiddins)

Performance:

• improve require "bundler" performance by ~5x (@segiddins)
• allow install gems in parallel when running on rubygems 2+

Bugfixes:

• config files with CRLF line endings can be read (#4435, @segiddins)
• bundle lock activates gems for the current platform even if they were activated under a different platform for a separate dependency (#4896, @segiddins)
• running bundle env in a directory without a gemfile no longer crashes (@segiddins)
• fail gracefully when attempting to use a source with an unknown URI scheme (#4953, @segiddins)
• store paths in the lockfile relative to the root gemfile directory when using eval_gemfile (#4966, @segiddins)
• bundle lock will not update without the --update flag (#4957, @segiddins)
• the console binstub generated by bundle gem will load .irbrc files (@mattbrictson)
• print friendly filesystem access errors in the new index (@segiddins)
• print a helpful error when running out of memory on jruby (#4673, @segiddins)
• load all rubygems plugins when installing gems (#2824, @segiddins)
• bundle clean --dry-run prints the list of gems without the --force option when no path is set (#5027, @hmistry)
• local installs no longer print "this gem may have been yanked" (#5022, @hmistry)
• avoid leaking which output when running bundle doctor (@colby-swandale)
• print a warning when attempting to bundle exec an empty program (#5084, @bronzdoc)
• ensure bundle outdated lists all outdated gems (#4979, @chrismo)
• fail gracefully when attempting to bundle gem with an invalid constant name (#5185, @segiddins)
• allow bundler/inline to work in a directory that contains a gemfile (#5117, @colby-swandale)
• ensure that the new index is thread-safe, allowing installation on rbx (#5142, @segiddins)
• remove deprecated rspec syntax in bundle gem output (@gearnode)
  • fail gracefully when any system error is encountered when touching the filesystem (#5134, @segiddins)
• fix compatibility with a machine running with FIPS mode enabled (#4989, @segiddins)
• fix bundle lock --add-platform ruby (#5230, @segiddins)
• print gem post-install messages when running bundle update (@smathy)
• ensure errors due to a retries are all separated by a newline (@segiddins)
• print out the bundle path in gem not found errors (#4854, @diegosteiner)
• fail gracefully when creating threads fails (@segiddins)
• avoid downloading metadata for gems that are only development dependencies (@Paxa)