Not executing on bundle install

[adambutler]

First of all ❤️ the idea of this project, and is exactly what I am after. However, I'm not seeing it behave as documented.

I am finding that the script is not being executed on bundle install, but works perfectly if I invoke it with bundle exec git-hookshot.

It seems perhaps pre_install is not being executed or something is up with the output.

When I run the following in irb then output is an empty string. I do get the symlink created though.

require "hookshot"

output = Hookshot.with_captured_stdout do
  current_working_directory = `lsof -p #{Process.ppid} | grep cwd`.split(" ").last
  Hookshot.link(current_working_directory: current_working_directory)
end

output === ""
=> true

I am running ruby 2.4.1 with bundler 1.15.1.

I've got an open PR here exhibiting this issue.

[adambutler]

Update: Changing my Gemfile to point to this repo seems to work. My guess is that the released gem has a bug in it and requires updating.

[brandonweiss]

Hmm, interesting. This required a ton of testing to get it to work, and so I tested it by pointing to the repo rather than pushing a gem. I wonder if Bundler behaves slightly differently depending on where the gem comes from…

I'll play around with it and see what I can figure out.

[adambutler]

Maybe ¯_(ツ)_/¯

I was trying to debug the gem itself so I cloned it from GitHub and changed my Gemfile to use my cloned versions path when I noticed it started working.

This is when I changed it to point to GitHub to test which again seemed to work just fine. After this I had just assumed the published Gem was outdated.

[brandonweiss]

Hmm, OK, so if you're manually running the code in the pre_install hook, I'd guess the reason there's no output is because the hooks directories had already been created? I think if you deleted the contents of .git/hooks and .hooks you'd see output.

Which leaves the problem of why Gem.pre_install hook is not being triggered in some instances…

[brandonweiss]

Also, I'm amazed you found this 😂 I was waiting to tell anyone about it until I'd confirmed it worked consistently.

[adambutler]

I know right? I searched git hooks on RubyGems.org, but nearly everything was about Ruby wrappers for writing Git Hooks... not really what I was looking for.

I wanted something like the shared-git-hooks project but for Ruby land.

I then searched for git hooks share... one result. Mind blown when I saw "Initial commit... a day ago" 😍

[adambutler]

So it turns out this 🔮 dark magic 🔮 can be quite scary...

Looks like it's broken deploys for us on Heroku. I'd suggest finding a way of making this run without lsof or failing elegantly. For now though I'm sadly going to have to remove the gem.

[...]
remote:        Using coffee-script 2.4.1
remote:        Using turbolinks 5.0.1
remote:        Using activesupport 5.1.0.rc1
remote:        Using loofah 2.0.3
remote:        Using mail 2.6.4
remote:        Installing recaptcha 4.3.1
remote:        sh: 1: lsof: not found
remote:        Installing unf_ext 0.0.7.4 with native extensions
remote:        sh: 1: lsof: not found
remote:        The latest bundler is 1.15.3, but you are currently running 1.15.2.
remote:        To update, run `gem install bundler`
remote:        Errno::ENOENT: No such file or directory @ rb_file_s_symlink -
remote:        (/tmp/build_0cce25259cbb38c1ac704fdd31ba83b5/.hooks/pre-push,
remote:        /tmp/build_0cce25259cbb38c1ac704fdd31ba83b5/.git/hooks/pre-push)
remote:        An error occurred while installing netrc (0.11.0), and Bundler cannot continue.
remote:        Make sure that `gem install netrc -v '0.11.0'` succeeds before bundling.
remote:
remote:        In Gemfile:
remote:        rest-client was resolved to 2.0.2, which depends on
remote:        netrc
remote:  !
remote:  !     Failed to install gems via Bundler.
remote:  !
remote:  !     Push rejected, failed to compile Ruby app.
remote:
remote:  !     Push failed
remote: Verifying deploy...
remote:
remote: !	Push rejected to redacted.
remote:
To https://git.heroku.com/redacted.git
 ! [remote rejected] master -> master (pre-receive hook declined)
error: failed to push some refs to 'https://git.heroku.com/redacted.git'

[brandonweiss]

Ruh roh! Hmm… would this be solved by putting in the development group? That way it would only be triggered locally (when deploying you usually bundle install --without="development test").