# stack > Tool for managing Haskell projects. - Create a new project: `stack new {{project_name}}` - Install all packages needed by a project: `stack install` - Compile a project: `stack build` - Run tests inside a project: `stack test` - Compile a project and re-compile every time a file changes: `stack build --file-watch` - Compile a project and execute a command after compilation: `stack build --exec "{{command}}"` - Run a program and pass an argument to it: `stack exec {{program_name}} -- {{argument}}`