Custom Bundler Configs

Earlier today I was working in a legacy ruby environment, and ran into a system conflict with my local rubies. In short, libv8 wasn’t installing correctly, and my bundle was broken. This bundler was using Rake 1.12.5 and ruby-2.2.0.

Here’s this problem pretty well documented online:

• Github Issue
• Stack Overflow
• Stack Overflow 2

All of those solutions basically address the sole problem: libv8 version conflicts. But none of them address this through the bundle, all using the gem cli. I needed something I could push to a distributed environment.

The gem failures were based on libv8 and therubyracer. I needed to link up the correct system v8 on install.

brew uninstall v8
brew install v8-315

The solutions would lead to tell me something like this:

gem install libv8 -- --with-system-v8
gem install therubyracer -- --with-v8-dir=/usr/local/..

But I needed it via bundle, this I dug into bundler configs.

So to set this up via CLI, heres the command:

bundle config --local build.libv8 --with-system-v8
bundle config --local build.therubyracer --with-v8-dir=$(brew --prefix v8-315)

Which leads to…

---
BUNDLE_PATH: ".bundle/gems"
BUNDLE_BIN: ".bundle/bin"
BUNDLE_DISABLE_SHARED_GEMS: true
BUNDLE_BUILD__LIBV8: "--with-system-v8"
BUNDLE_BUILD__THERUBYRACER: "--with-v8-dir=/usr/local/opt/v8@3.15"

Boom… now I am installing legacy versions through bundler.