hapistrano (hackage): Hapistrano makes it easy to reliably deploy Haskell applications to a server.  Following popular libraries like Ruby's Capistrano, Hapistrano does the work of building the application with dependencies into a distinct folder, and then atomically moves a symlink to the latest complete build.  This allows for atomic switchovers to new application code after the build is complete. Rollback is even simpler, since Hapistrano can just point the current symlink to the previous release.  See the project readme on GitHub for more information.
Keywords: library|mit|program|system|capistrano|continuous-deployment|deployment|hacktoberfest|haskell|haskell-applications