1 20
try:
2 20
    from .version import version as __version__
3 20
    from .version import githash as __githash__
4 0
except ImportError:
5 0
    __version__ = ''
6 0
    __githash__ = ''
7

8

9
# If we've made it as far as importing astropy_helpers, we don't need
10
# ah_bootstrap in sys.modules anymore.  Getting rid of it is actually necessary
11
# if the package we're installing has a setup_requires of another package that
12
# uses astropy_helpers (and possibly a different version at that)
13
# See https://github.com/astropy/astropy/issues/3541
14 20
import sys
15 20
if 'ah_bootstrap' in sys.modules:
16 0
    del sys.modules['ah_bootstrap']
17

18

19
# Note, this is repeated from ah_bootstrap.py, but is here too in case this
20
# astropy-helpers was upgraded to from an older version that did not have this
21
# check in its ah_bootstrap.
22
# matplotlib can cause problems if it is imported from within a call of
23
# run_setup(), because in some circumstances it will try to write to the user's
24
# home directory, resulting in a SandboxViolation.  See
25
# https://github.com/matplotlib/matplotlib/pull/4165
26
# Making sure matplotlib, if it is available, is imported early in the setup
27
# process can mitigate this (note importing matplotlib.pyplot has the same
28
# issue)
29 20
try:
30 20
    import matplotlib
31 11
    matplotlib.use('Agg')
32 11
    import matplotlib.pyplot
33 9
except:
34
    # Ignore if this fails for *any* reason*
35 9
    pass
36

37

38 20
import os
39
# Ensure that all module-level code in astropy or other packages know that
40
# we're in setup mode:
41 20
if ('__main__' in sys.modules and
42
        hasattr(sys.modules['__main__'], '__file__')):
43 20
    filename = os.path.basename(sys.modules['__main__'].__file__)
44

45 20
    if filename.rstrip('co') == 'setup.py':
46 20
        import builtins
47 20
        builtins._ASTROPY_SETUP_ = True
48

49 20
    del filename

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