# relocate-preamble.py.in
#
# This file is part of LilyPond, the GNU music typesetter.
#
# Copyright (C) 2007--2020  Han-Wen Nienhuys <hanwen@xs4all.nl>
#
# LilyPond is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# LilyPond is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with LilyPond.  If not, see <http://www.gnu.org/licenses/>.
#

This is generic code, used for all python scripts.

The quotes are to ensure that the source .py file can still be
run as a python script, but does not include any sys.path handling.
Otherwise, the lilypond-book calls inside the build
might modify installed .pyc files.

"""

# This is needed for installations with a non-default layout, ie where share/
# is not next to bin/.
sys.path.insert (0, os.path.join ('@lilypond_datadir@', 'python'))

# Dynamic relocation, for installations with a default layout including GUB,
# but also for execution from the build directory.
bindir = os.path.abspath (os.path.dirname (sys.argv[0]))
topdir = os.path.dirname (bindir)
if bindir.endswith (r'/scripts/out'):
    topdir = os.path.join (os.path.dirname (topdir), 'out')
datadir = os.path.abspath (os.path.join (topdir, 'share', 'lilypond'))
for v in [ 'current', '@TOPLEVEL_VERSION@' ]:
    sys.path.insert (0, os.path.join (datadir, v, 'python'))

"""