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-rw-r--r--lib/spack/spack/util/spack_json.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/spack/spack/util/spack_json.py b/lib/spack/spack/util/spack_json.py
index 232852fd22..579d046985 100644
--- a/lib/spack/spack/util/spack_json.py
+++ b/lib/spack/spack/util/spack_json.py
@@ -11,7 +11,7 @@ import spack.error
__all__ = ["load", "dump", "SpackJSONError"]
-_json_dump_args = {"indent": 2, "separators": (",", ": ")}
+_json_dump_args = {"indent": None, "separators": (",", ":")}
def load(stream: Any) -> Dict: