During April 2025, Respublica contributed to the haskell/cabal repository by implementing parallel bootstrap build support for cabal-install. They enhanced the existing Python bootstrap script to accept a -j command-line argument, allowing users to specify the number of parallel jobs for building. This update required extending argument parsing and modifying command construction to enable multithreaded builds, directly improving build system efficiency and reducing overall build times, particularly in CI environments. The work demonstrated proficiency in Python, build systems, and command-line interface development. The feature was well-scoped, addressing a clear need for faster, more reliable builds without introducing unnecessary complexity.