@Morriar that was the original version but it adds a complexity of having to handle two types of quotes in the string, so a bit more noisy and error-prone. I can change it to /bin/sh if we want to.

Because I was not able to reproduce the issue in local Spoom tests, I personally believe that the fix here is not necessary, and we should find the core issue, while using this branch as a relief point for the team and a guidance on where to look for.

This is a complex issue so I wanted to share my current understanding of how and why it's happening:

At Shopify, many of our dev environments are set up with Nix. In some of our Nix-ified environment, Nix wraps Ruby in an execution script that sets DYLD_LIBRARY_PATH to include libtiff-4.7.0/lib.

This libtiff directory contains the following file: libcxx-19.1.7/lib/libc++.1.0.dylib. This is Nix's version of the C++ standard library. Separately, Sorbet attempts to load whatever version of C++ comes standard on the user's machine. These two versions of C++ stdlib are incompatible with one another, resulting in bugs in Sorbet, such as corrupted JSON output.

Shelling out from Ruby mitigates the issue because it forces commands to execute from the system shell, where Sorbet will only load the system version of C++ stdlib, thus preventing the error.