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# Some things resolved about the execution site,
# so we dont have to repeat this everywhere
#
import os
import sys
from buildstream import utils
from buildstream._exceptions import ProgramNotFoundError
try:
utils.get_host_tool('bzr')
HAVE_BZR = True
except ProgramNotFoundError:
HAVE_BZR = False
try:
utils.get_host_tool('git')
HAVE_GIT = True
except ProgramNotFoundError:
HAVE_GIT = False
try:
utils.get_host_tool('ostree')
HAVE_OSTREE_CLI = True
except ProgramNotFoundError:
HAVE_OSTREE_CLI = False
try:
from buildstream import _ostree
HAVE_OSTREE = True
except (ImportError, ValueError):
HAVE_OSTREE = False
try:
utils.get_host_tool('bwrap')
HAVE_BWRAP = True
except ProgramNotFoundError:
HAVE_BWRAP = False
IS_LINUX = os.getenv('BST_FORCE_BACKEND', sys.platform).startswith('linux')
HAVE_ROOT = HAVE_BWRAP or os.geteuid() == 0
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