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-rw-r--r--lib/spack/spack/architecture.py2
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/spack/spack/architecture.py b/lib/spack/spack/architecture.py
index c4ef0805ac..0e006bdf40 100644
--- a/lib/spack/spack/architecture.py
+++ b/lib/spack/spack/architecture.py
@@ -168,9 +168,11 @@ class Platform(object):
def add_operating_system(self, name=None, operating_system=None):
if self.name == 'linux':
linux_os = self._detect_linux_os()
+ self.default_os = linux_os.name
self.operating_sys[linux_os.name] = linux_os
elif self.name == 'darwin':
mac_os = self._detect_mac_os()
+ self.default_os = mac_os.name
self.operating_sys[mac_os.name] = mac_os
else:
self.operating_sys[name] = operating_system