Gistory

If you use bundler and git and you want to know when a gem was updated, gistory comes to the rescue, simply:

gem install gistory
cd /path/to/repo
gistory sidekiq

and you'll see something like:

Gem: sidekiq
Current version: 4.2.7

Change history:
4.2.7 on Tue,  7 Feb 2017 16:05 +01:00 (commit c6edf321)
4.2.6 on Wed, 30 Nov 2016 13:47 +01:00 (commit bf6a0d17)
4.2.5 on Tue, 22 Nov 2016 14:48 -05:00 (commit 20ff5148)
4.1.4 on Wed,  9 Nov 2016 14:31 +01:00 (commit 05a3c549)

By default gistory only looks at the last 100 commits made to the current branch. If you want to see farther back in the past run:

gistory sidekiq -m1000

If you want to look at all changes to Gemfile.lock in all branches, use the -a switch:

gistory sidekiq -a

Note that if the gem was added, then removed, and then added again, gistory will only show the latest version changes up until it was removed.

Roadmap

• use red for changes in the major version, blue for changes in the minor version
• support other VCSs like subversion, mercurial, etc.
• detect if the gem was added, then removed and then added again
• use a libgit2 binding instead of the git cli, how much faster it is?
• remove bundler dep
• add yard doc
• do not print the warning text if there were no more changes in the lock file
• link the commit SHA to the repo's hosting service, if any