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Remove support for Python 2.6 (#27256)

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Modifications:
- [x] Removed `centos:6` unit test, adjusted vermin checks
- [x] Removed backport of `collections.OrderedDict`
- [x] Removed backport of `functools.total_ordering`
- [x] Removed Python 2.6 specific skip markers in unit tests
- [x] Fixed a few minor Python 2.6 related TODOs in code

Updating the vendored dependencies will be done in separate PRs
This commit is contained in:
Massimiliano Culpo
2021-11-23 18:06:17 +01:00
committed by GitHub
parent 812663de62
commit fa7189b480
27 changed files with 66 additions and 327 deletions
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lib/spack/llnl/util/multiproc.py
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@@ -16,7 +16,7 @@
class Barrier:
"""Simple reusable semaphore barrier.
Python 2.6 doesn't have multiprocessing barriers so we implement this.
Python 2 doesn't have multiprocessing barriers so we implement this.
See http://greenteapress.com/semaphores/downey08semaphores.pdf, p. 41.
"""