Explore a 24-minute conference talk from ACM SIGPLAN's Haskell Implementors' Workshop 2023 (HIW'23) that introduces a novel GHC plugin for setting breakpoints in Haskell programs. Dive into Aaron Allen's solution to address the limitations of GHCi's built-in breakpoint functionality, particularly in concurrent programs like web servers. Learn about a new approach that works effectively in concurrent contexts and operates independently of the bytecode interpreter. Discover the potential benefits this plugin offers to industrial users and gain insights into its implementation details, which may be of particular interest to GHC hackers. For more comprehensive information, refer to the associated GitHub repository.