$ sudo apt-get update
$ sudo apt-get install libghc-cond-dev-0.4.0.2-a8b7a

libghc-cond-dev-0.4.0.2-a8b7a is installed in your system.

Make ensure the libghc-cond-dev-0.4.0.2-a8b7a package were installed using the commands given below,

$ sudo dpkg-query -l | grep libghc-cond-dev-0.4.0.2-a8b7a*

You will get with libghc-cond-dev-0.4.0.2-a8b7a package name, version, architecture and description in a table

libghc-cond-dev-0.4.0.2-a8b7a package basic information: