libghc-bytestring-mmap-dev software package provides mmap support for strict ByteStrings, you can install in your Debian 8 (Jessie) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install libghc-bytestring-mmap-dev
libghc-bytestring-mmap-dev is installed in your system.
Make ensure the libghc-bytestring-mmap-dev package were installed using the commands given below,
$ sudo dpkg-query -l | grep libghc-bytestring-mmap-dev *
You will get with libghc-bytestring-mmap-dev package name, version, architecture and description in a table
| Distro | Debian 8 jessie |
| Section | Haskell |
| Package | libghc-bytestring-mmap-dev |
| Version | 0.2.2-4+b1 [mips, mipsel], 0.2 |
| Description | mmap support for strict ByteStrings |
| Sub Section | Haskell |