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-rw-r--r--lib/spack/spack/cmd/external.py6
1 files changed, 4 insertions, 2 deletions
diff --git a/lib/spack/spack/cmd/external.py b/lib/spack/spack/cmd/external.py
index 86f2ac00cd..9570576c4f 100644
--- a/lib/spack/spack/cmd/external.py
+++ b/lib/spack/spack/cmd/external.py
@@ -282,7 +282,8 @@ def _get_external_packages(packages_to_check, system_path_to_exe=None):
tty.debug(
'The following executables in {0} were decidedly not '
'part of the package {1}: {2}'
- .format(prefix, pkg.name, ', '.join(exes_in_prefix))
+ .format(prefix, pkg.name, ', '.join(
+ _convert_to_iterable(exes_in_prefix)))
)
for spec in specs:
@@ -295,7 +296,8 @@ def _get_external_packages(packages_to_check, system_path_to_exe=None):
continue
if spec in resolved_specs:
- prior_prefix = ', '.join(resolved_specs[spec])
+ prior_prefix = ', '.join(
+ _convert_to_iterable(resolved_specs[spec]))
tty.debug(
"Executables in {0} and {1} are both associated"