baloo-dev software package provides development files for Baloo, 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 baloo-dev
baloo-dev is installed in your system.
Make ensure the baloo-dev package were installed using the commands given below,
$ sudo dpkg-query -l | grep baloo-dev *
You will get with baloo-dev package name, version, architecture and description in a table
| Distro | Debian 9 stretch |
| Section | Library development |
| Package | baloo-dev |
| Version | 4:4.14.3-3+b2 [mips, mips64el, |
| Description | development files for Baloo |
| Sub Section | libdevel |