Worked on the haskell/cabal repository to deliver parallel bootstrap build support for cabal-install, introducing a -j command-line argument to the bootstrap script. This enhancement allowed users to specify the number of parallel jobs, reducing overall build times and improving efficiency, particularly in continuous integration environments. The work involved extending Python-based argument parsing and command construction within bootstrap.py, demonstrating skills in build systems and command-line interface development. By focusing on usability and reliability, the changes streamlined the build process without introducing regressions. Over the month, contributed one feature with no reported bugs, reflecting a targeted and well-executed engineering effort.