--- /dev/null
+commit c2e06e0ea0b4a1cbb67049ab77a80f53646fb0b2
+Author: Alexis Ballier <aballier@gentoo.org>
+Date: Tue Dec 23 12:27:19 2014 +0100
+
+ Add support for rospack_norecurse to avoid recursing into all subdirectories when looking for a package.
+
+ I am installing ros into /usr, hence this searches in /usr/share. I have a lot of directories, not ROS related, into /usr/share (e.g. a full TeX Live install), and I get these timings:
+
+ Without rospack_norecurse in /usr/share:
+ $ time rosversion rospack
+ 2.2.5
+
+ real 0m2.861s
+ user 0m1.588s
+ sys 0m1.267s
+
+ With rospack_norecurse in /usr/share:
+ $ time rosversion rospack
+ 2.2.5
+
+ real 0m0.135s
+ user 0m0.100s
+ sys 0m0.034s
+
+ This is on a desktop with a SSD drive. On an arm board, with much less packages in /usr/share but way much slower I/O I remember hitting the 10 seconds timeout for roscore to start.
+
+diff --git a/src/rospkg/rospack.py b/src/rospkg/rospack.py
+index e55acec..7ed98de 100644
+--- a/src/rospkg/rospack.py
++++ b/src/rospkg/rospack.py
+@@ -42,7 +42,7 @@ from .stack import parse_stack_file, InvalidStack
+ _cache_lock = Lock()
+
+
+-def list_by_path(manifest_name, path, cache):
++def list_by_path(manifest_name, path, cache, recurse=True):
+ """
+ List ROS stacks or packages within the specified path.
+
+@@ -53,6 +53,7 @@ def list_by_path(manifest_name, path, cache):
+ :param manifest_name: MANIFEST_FILE or STACK_FILE, ``str``
+ :param path: path to list resources in, ``str``
+ :param cache: path cache to update. Maps resource name to directory path, ``{str: str}``
++ :param recurse: search recursively in subdirectories ``bool``
+ :returns: complete list of resources in ROS environment, ``[str]``
+ """
+ resources = []
+@@ -89,9 +90,15 @@ def list_by_path(manifest_name, path, cache):
+ # optimization for stacks.
+ del dirs[:]
+ continue #leaf
+- elif 'rospack_nosubdirs' in files:
++ elif 'rospack_nosubdirs' in files or not recurse:
+ del dirs[:]
+ continue #leaf
++ elif 'rospack_norecurse' in files:
++ for sd in dirs:
++ spath = os.path.join(d, sd)
++ resources += list_by_path(manifest_name, spath, cache, False)
++ del dirs[:]
++ continue
+ # remove hidden dirs (esp. .svn/.git)
+ [dirs.remove(di) for di in dirs if di[0] == '.']
+ return resources
--- /dev/null
+# Copyright 1999-2014 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+# $Id$
+
+EAPI=5
+PYTHON_COMPAT=( python{2_7,3_3,3_4} )
+
+SCM=""
+if [ "${PV#9999}" != "${PV}" ] ; then
+ SCM="git-r3"
+ EGIT_REPO_URI="http://github.com/ros-infrastructure/rospkg"
+fi
+
+inherit ${SCM} distutils-r1
+
+DESCRIPTION="Standalone Python library for the ROS package system"
+HOMEPAGE="http://wiki.ros.org/rospkg"
+if [ "${PV#9999}" != "${PV}" ] ; then
+ SRC_URI=""
+ KEYWORDS=""
+ # Needed for tests
+ S="${WORKDIR}/${PN}"
+ EGIT_CHECKOUT_DIR="${S}"
+else
+ SRC_URI="http://download.ros.org/downloads/${PN}/${P}.tar.gz
+ http://github.com/ros-infrastructure/rospkg/archive/${PV}.tar.gz -> ${P}.tar.gz
+ "
+ KEYWORDS="~amd64 ~arm"
+fi
+
+LICENSE="BSD"
+SLOT="0"
+IUSE="test"
+
+RDEPEND="dev-python/pyyaml[${PYTHON_USEDEP}]"
+DEPEND="${RDEPEND}
+ test? (
+ dev-python/nose[${PYTHON_USEDEP}]
+ dev-python/coverage[${PYTHON_USEDEP}]
+ )
+"
+PATCHES=(
+ "${FILESDIR}/norecurse.patch"
+)
+
+python_test() {
+ nosetests --with-coverage --cover-package=rospkg --with-xunit test || die
+}
+
+src_install() {
+ distutils-r1_src_install
+
+ # Avoid recursing into /usr/share when looking for packages.
+ dodir /usr/share
+ touch "${ED}/usr/share/rospack_norecurse"
+}
--- /dev/null
+# Copyright 1999-2014 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+# $Id$
+
+EAPI=5
+PYTHON_COMPAT=( python{2_7,3_3,3_4} )
+
+SCM=""
+if [ "${PV#9999}" != "${PV}" ] ; then
+ SCM="git-r3"
+ EGIT_REPO_URI="http://github.com/ros-infrastructure/rospkg"
+fi
+
+inherit ${SCM} distutils-r1
+
+DESCRIPTION="Standalone Python library for the ROS package system"
+HOMEPAGE="http://wiki.ros.org/rospkg"
+if [ "${PV#9999}" != "${PV}" ] ; then
+ SRC_URI=""
+ KEYWORDS=""
+ # Needed for tests
+ S="${WORKDIR}/${PN}"
+ EGIT_CHECKOUT_DIR="${S}"
+else
+ SRC_URI="http://download.ros.org/downloads/${PN}/${P}.tar.gz
+ http://github.com/ros-infrastructure/rospkg/archive/${PV}.tar.gz -> ${P}.tar.gz
+ "
+ KEYWORDS="~amd64 ~arm"
+fi
+
+LICENSE="BSD"
+SLOT="0"
+IUSE="test"
+
+RDEPEND="dev-python/pyyaml[${PYTHON_USEDEP}]"
+DEPEND="${RDEPEND}
+ test? (
+ dev-python/nose[${PYTHON_USEDEP}]
+ dev-python/coverage[${PYTHON_USEDEP}]
+ )
+"
+PATCHES=(
+ "${FILESDIR}/norecurse.patch"
+)
+
+python_test() {
+ nosetests --with-coverage --cover-package=rospkg --with-xunit test || die
+}
+
+src_install() {
+ distutils-r1_src_install
+
+ # Avoid recursing into /usr/share when looking for packages.
+ dodir /usr/share
+ touch "${ED}/usr/share/rospack_norecurse"
+}