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Gambas 3.5.2

If you want to install gambas 3.5.2, you need to add the jessie repository.

Open sources.list with nano editor.

$ sudo gedit /etc/apt/sources.list

Add these lines to sources.list :

deb http://ftp.nl.debian.org/debian/ jessie main
deb-src http://ftp.nl.debian.org/debian/ jessie main

Save the result (<ctrl> + O -> <enter>) and close the sources.list (<ctrl> + X)

Next update the sources and install gambas 3.5.2:

$ sudo apt-get update
$ sudo apt-get install gambas3

After installation you will find gambas 3 installed in menu 'Programming'