Plumb reproducible build env vars more thoroughly. (#2554) #3049

Job	Run time
Check GitHub Organization	1s
tox -e py312-pip24_2	13m 19s
tox -e py312-pip24_2-integration --shard 1/2	47m 22s
tox -e format-check,lint-check,typecheck,vendor-check,package,docs	8m 40s
tox -e py312-pip24_2-integration --shard 2/2	44m 51s
./dtox.sh -e py27-pip20	9m 29s
./dtox.sh -e py37-pip22_3_1	10m 27s
./dtox.sh -e py311-pip23_3_2	13m 7s
./dtox.sh -e py312-pip24_2	10m 39s
./dtox.sh -e py313-pip24_2	11m 0s
./dtox.sh -e pypy310-pip24_2	18m 46s
./dtox.sh -e py27-pip20-integration	28m 13s
./dtox.sh -e py37-pip22_3_1-integration --shard 1/2	22m 39s
./dtox.sh -e py37-pip22_3_1-integration --shard 2/2	21m 53s
./dtox.sh -e py311-pip23_3_2-integration --shard 1/2	23m 44s
./dtox.sh -e py311-pip23_3_2-integration --shard 2/2	23m 17s
./dtox.sh -e py312-pip24_2-integration --shard 1/2	27m 23s
./dtox.sh -e py312-pip24_2-integration --shard 2/2	24m 34s
./dtox.sh -e py313-pip24_2-integration --shard 1/2	22m 26s
./dtox.sh -e py313-pip24_2-integration --shard 2/2	23m 20s
./dtox.sh -e pypy310-pip24_2-integration --shard 1/2	38m 14s
./dtox.sh -e pypy310-pip24_2-integration --shard 2/2	37m 44s
Gather Final Status	1s
	8h 1m 9s

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