Todd Gamblin 13aca774e3 bugfix: preserve patch ordering when specs are copied ... - The `Spec` class maintains a special `_patches_in_order_of_appearance` attribute on patch variants, but it is was preserved when specs are copied. - This caused issues for some builds - Add special logic to `Spec` to preserve this variant on copy - TODO: in the long term we should get rid of the special variant and make it the responsibility of one of the variant classes.		2018-11-09 00:31:24 -08:00
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spack	bugfix: preserve patch ordering when specs are copied	2018-11-09 00:31:24 -08:00