Hi, I've successfully built master packages with my patch (forcing HTTP::OAI@3.x dependency)[1]. They also install with no issue in Stretch. Here's what you need to test yourself: https://cloud.theke.io/s/AyfTWpXt6R87epe Basically download everything somewhere and: $ vagrant up $ vagrant ssh v$ wget -q -O- https://debian.koha-community.org/koha/gpg.asc | sudo apt-key add - v$ echo 'deb http://debian.koha-community.org/koha unstable main' | sudo tee /etc/apt/sources.list.d/koha.list v$ apt update v$ sudo dpkg -i /vagrant/libhttp-*.deb v$ sudo apt -f install v$ sudo dpkg -i /vagrant/koha-deps*.deb v$ sudo apt -f install v$ sudo dpkg -i /vagrant/koha-perldeps*.deb v$ sudo apt -f install v$ sudo dpkg -i /vagrant/koha-common*.deb v$ sudo apt -f install Voila. [1] https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=20437 -- Tomás Cohen Arazi Theke Solutions (https://theke.io <http://theke.io/>) ✆ +54 9351 3513384 GPG: B2F3C15F