# Copyright 1999-2007 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: $

NEED_PYTHON=2.4

inherit distutils python multilib

DESCRIPTION="Python library for symbolic mathematics"
HOMEPAGE="http://code.google.com/p/sympy/"
SRC_URI="http://sympy.googlecode.com/files/${P}.tar.gz"

SLOT="0"

LICENSE="BSD"
KEYWORDS="~amd64 ~x86"
IUSE="examples mathml gtk latex plot test"

RDEPEND="mathml? (
		dev-libs/libxml2
		dev-libs/libxslt
	)
	gtk? (
		!mathml? (
			dev-libs/libxml2
			dev-libs/libxslt
		)
		x11-libs/gtkmathview
	)
	latex? (
		virtual/tetex
		app-text/dvipng
		>=dev-python/pexpect-2.0
	)
	plot? (
		dev-python/pyopengl
		dev-python/imaging
		dev-python/ctypes
	)"
DEPEND="test? ( >=dev-python/py-0.9.0 )
	${RDEPEND}"

PYTHON_MODNAME="sympy"

pkg_setup() {
	if use mathml || use gtk ; then
		if ! built_with_use "dev-libs/libxml2" python ; then
			eerror "dev-libs/libxml2 has to be compiled with 'python' USE-flag."
			die "Needed USE-flag for dev-libs/libxml2 not found."
		fi

		if ! built_with_use "dev-libs/libxslt" python ; then
			eerror "dev-libs/libxslt has to be compiled with 'python' USE-flag."
			die "Needed USE-flag for dev-libs/libxslt not found."
		fi
	fi

	if use gtk ; then
		if ! built_with_use "x11-libs/gtkmathview" gtk ; then
			eerror "x11-libs/gtkmathview has to be compiled with 'gtk' USE-flag."
			die "Needed USE-flag for x11-libs/gtkmathview not found."
		fi
	fi
}

src_install() {
	distutils_src_install

	if use examples ; then
		insinto /usr/share/doc/${PF}
		doins -r examples
	fi

	python_version

	# 'pyglet' is not yet available in portage tree
	insinto ${ROOT}usr/$(get_libdir)/python${PYVER}/site-packages/sympy/thirdparty
	doins -r sympy/thirdparty/pyglet
}

src_test() {
	PYTHONPATH=build/lib/ "${python}" setup.py test || die "Unit tests failed!"
}

pkg_postinst() {
	python_version

	python_mod_optimize ${ROOT}usr/$(get_libdir)/python${PYVER}/site-packages/sympy/

	if ! has_version ">=dev-python/ipython-0.7.2" ; then
		elog
		elog "IPython 0.7.2 (or better) wasn't found on your system. It is"
		elog "highly recommended that you install this package to optimize"
		elog "your work with SymPy. To do so, you can run:"
		elog
		elog " emerge '>=dev-python/ipython-0.7.2'"
	fi

	elog
	elog "SymPy comes with a console that is a simple wrapper around the"
	elog "classic python console (or ipython when available) that loads"
	elog "the sympy namespace and executes some common commands for you."
	elog
	elog "To start it, issue:"
	elog
	elog " isympy"
	elog
	elog "For a brief introduction to SymPy visit:"
	elog
	elog " http://code.google.com/p/sympy/wiki/Tutorial"
	elog
}

pkg_postrm() {
	python_mod_cleanup
}