pre_install() {
    virtualenv2 --system-site-packages /usr/lib/seafile/seafileenv
    virtualenv2 --relocatable /usr/lib/seafile/seafileenv
    source /usr/lib/seafile/seafileenv/bin/activate

    pip2 install gunicorn
    pip2 install "Django>=1.5.8,<1.6"
    pip2 install django-pipeline
    pip2 install http://effbot.org/media/downloads/PIL-1.1.7.tar.gz
    pip2 install "https://github.com/djblets/djblets/archive/release-0.6.14.zip#egg=Djblets"
    pip2 install "Pillow>=2.6.1,<3.0.0"
    pip2 install "django-compressor==1.4"
    pip2 install "django-statici18n==1.1.2"
    pip2 install "git+git://github.com/haiwen/django-constance.git@bde7f7cdfd0ed1631a6817fd4cd76f37bf54fe35#egg=django-constance[database]"
    pip2 install "openpyxl==2.3.0"

    deactivate
}


post_install() {
    systemctl daemon-reload
}

pre_upgrade() {
    rm -rf /usr/lib/seafile/seafileenv
    pre_install
}

post_upgrade() {
    post_install
}

post_remove() {
    rm -rf /usr/lib/seafile/seafileenv
    post_install
}