POSTIN

/bin/sh

update-alternatives --install /usr/libexec/openssh/ssh-askpass ssh-askpass /usr/libexec/openssh/qt5-ssh-askpass 60
update-alternatives --install /usr/bin/ssh-askpass bssh-askpass /usr/libexec/openssh/qt5-ssh-askpass 60

POSTUN

/bin/sh

[ $1 = 0 ] || exit 0
update-alternatives --remove ssh-askpass /usr/libexec/openssh/qt5-ssh-askpass
update-alternatives --remove bssh-askpass /usr/libexec/openssh/qt5-ssh-askpass