libghc-exact-pi-dev software package provides Exact rational multiples of pi (and integer powers of pi), you can install in your Ubuntu 17.04 (Zesty Zapus) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install libghc-exact-pi-dev
libghc-exact-pi-dev is installed in your system.
Make ensure the libghc-exact-pi-dev package were installed using the commands given below,
$ sudo dpkg-query -l | grep libghc-exact-pi-dev *
You will get with libghc-exact-pi-dev package name, version, architecture and description in a table
| Distro | Ubuntu 17 04 zesty zapus |
| Section | Haskell |
| Package | libghc-exact-pi-dev |
| Version | 0.4.1.2-3 |
| Description | Exact rational multiples of pi (and integer powers of pi) |
| Sub Section | haskell |