Tests don't pass in released 1.1.1

[TyberiusPrime]

Download the umi-tools 1.1.1 release, unzip, install in fresh venv,
add pyyaml and nose, run tests.

14-16 of 58 tests fail. (it varies a bit - RNG related?).
full log:
umitools_fail.txt.

What's up with that?

[TomSmithCGAT]

Can you try setting the python hashseed first (export PYTHONHASHSEED=0).

Since python 3.3, the hashing used in e.g dictionary keys is non-determininistic and are 'salted' with a unpredictable random values: https://docs.python.org/3.4/reference/datamodel.html#object.__hash__. I understand this is prevent DOS attacks.

[TyberiusPrime]

Yes that does allow the tests to pass.

This could be done when calling umi-tools from the tests.
You're forking out to bash in line 122 of test_umi_tools.py anyway,
might as well pass that environment variable?

Since python 3.6, dicts remember their insertion order, and
iter in that order, and that's part of the API since 3.7 .

Set's still have no defined order though.

All the failing tests are actually in dedup & group ('whitelist_scrb' in the output non-withstanding),
and it's not just the output being in a different order.

The actual issue is in network.breadth_first_search which changes order depending on the actual hash values.
PR fixing incoming.

[TomSmithCGAT]

Closing due to inactivity. There's a (long) outstanding PR for making UMI-tools determininstic (#550) following this issue. One day I might even get that merged...