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Replace previous bash command to new one (#7005)

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Prevents infinite recursion caused by sourcing `setup-env.sh` in bashrc
This commit is contained in:
Mario Melara 2019-03-27 10:26:52 -07:00 committed by Todd Gamblin
parent 8a4e762bec
commit 298a55b28f
1 changed files with 5 additions and 16 deletions
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21
lib/spack/spack/platforms/cray.py
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@ -115,24 +115,13 @@ def _default_target_from_env(self):
A bash subshell is launched with a wiped environment and the list of
loaded modules is parsed for the first acceptable CrayPE target.
'''
# Based on the incantation:
# echo "$(env - USER=$USER /bin/bash -l -c 'module list -lt')"
# env -i /bin/bash -lc echo $CRAY_CPU_TARGET 2> /dev/null
if getattr(self, 'default', None) is None:
env = which('env')
env.add_default_arg('-')
# CAUTION - $USER is generally needed in the sub-environment.
# There may be other variables needed for general success.
output = env('USER=%s' % os.environ['USER'],
'HOME=%s' % os.environ['HOME'],
'/bin/bash', '--noprofile', '--norc', '-c',
'. /etc/profile; module list -lt',
output=str, error=str)
self._defmods = _get_modules_in_modulecmd_output(output)
targets = []
_fill_craype_targets_from_modules(targets, self._defmods)
self.default = targets[0] if targets else None
tty.debug("Found default modules:",
*[" %s" % mod for mod in self._defmods])
output = env("-i", "/bin/bash", "-lc", "echo $CRAY_CPU_TARGET",
output=str, error=os.devnull)
self.default = output.strip()
tty.debug("Found default module:%s" % self.default)
return self.default
def _avail_targets(self):