Worked on the gruntwork-io/terragrunt repository to enhance stack generation reliability by addressing a critical bug in directory resolution. Focused on ensuring that get_original_terragrunt_dir returns the correct stackfile path during stack generation, this fix reduces misconfigurations in multi-stack workflows and streamlines deployment processes. The solution involved updating Go code, migrating tests from deprecated util.JoinPath to the standard filepath.Join for improved compatibility, and revising documentation to reflect the new behavior. Leveraged skills in Go, infrastructure as code, and testing, demonstrating a methodical approach to maintaining code quality and aligning with evolving language standards within the project’s infrastructure.