cabal-install software package provides command-line interface for Cabal and Hackage, you can install in your Debian 9 (Stretch) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install cabal-install
cabal-install is installed in your system.
Make ensure the cabal-install package were installed using the commands given below,
$ sudo dpkg-query -l | grep cabal-install *
You will get with cabal-install package name, version, architecture and description in a table
| Distro | Debian 9 stretch |
| Section | Haskell |
| Package | cabal-install |
| Version | 1.22.9.0-1 |
| Description | command-line interface for Cabal and Hackage |
| Sub Section | Haskell |