#!/bin/sh -e

./configure \
    --prefix=/usr \
    --without-ensurepip

make
make DESTDIR="$1" install

ln -s python3 "$1/usr/bin/python"

# Rebuild all python subpackages if required.
{
    # Exit here if python is not installed.
    command -v python3 >/dev/null || exit 0

    # Figure out the system's python version.
    python_sys=$(kiss l python)
    python_sys=${python_sys#* }
    python_sys=${python_sys#?.}
    python_sys=${python_sys%.*}

    # Figure out this python version.
    read -r python_repo _ < "${0%/*}/version"
    python_repo=${python_repo#?.}
    python_repo=${python_repo%.*}

    # If the two python versions differ, tell post-install to rebuild.
    [ "$python_sys" = "$python_repo" ] ||
        :>/tmp/python-REBUILD
}