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authorscheibelp <scheibel1@llnl.gov>2017-10-03 16:47:07 -0700
committerbecker33 <becker33@llnl.gov>2017-10-03 16:47:07 -0700
commitf53be46186ed297319be54f9770feb84171882d6 (patch)
treea8d0aebe3536c57b6bc0cd124cda860501672104 /lib
parented656dccf5aeff6bdc7449c38cd833555052fdab (diff)
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wrap generator with collection to avoid exhausting it with single iteration (#5586)
Diffstat (limited to 'lib')
-rw-r--r--lib/spack/spack/build_environment.py6
1 files changed, 3 insertions, 3 deletions
diff --git a/lib/spack/spack/build_environment.py b/lib/spack/spack/build_environment.py
index 849ee0b15c..af3329ed56 100644
--- a/lib/spack/spack/build_environment.py
+++ b/lib/spack/spack/build_environment.py
@@ -191,9 +191,9 @@ def set_build_environment_variables(pkg, env, dirty):
dirty (bool): Skip unsetting the user's environment settings
"""
# Gather information about various types of dependencies
- build_deps = pkg.spec.dependencies(deptype=('build', 'test'))
- link_deps = pkg.spec.traverse(root=False, deptype=('link'))
- build_link_deps = list(build_deps) + list(link_deps)
+ build_deps = set(pkg.spec.dependencies(deptype=('build', 'test')))
+ link_deps = set(pkg.spec.traverse(root=False, deptype=('link')))
+ build_link_deps = build_deps | link_deps
rpath_deps = get_rpath_deps(pkg)
build_prefixes = [dep.prefix for dep in build_deps]