Todd Gamblin bf2b30a5f5 bugfix: preserve dict order for Spec.dag_hash() in Python 2 (#31092) ... Fix a bug introduced in #21720. `spack_json.dump()` calls `_strify()` on dictionaries to convert `unicode` to `str`, but it constructs `dict` objects instead of `collections.OrderedDict` objects, so in Python 2 (or earlier versions of 3) it can scramble dictionary order. This can cause hashes to differ between Python 2 and Python 3, or between Python 3.7 and earlier Python 3's. - [x] use `OrderedDict` in `_strify` - [x] add a regression test		2022-06-10 20:32:35 -07:00
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spack	bugfix: preserve dict order for Spec.dag_hash() in Python 2 (#31092)	2022-06-10 20:32:35 -07:00