use instructlab constraints-dev.txt in e2e test
#499
Merged
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For instructlab,
pip install .does not installvllm, but it does install an uncappedtorch(2.7.0currently).When we install
vllmlater, we compile a binaryflash_attnwheel againsttorch-2.7.0.vllm-0.8.4requirestorch==2.6.0, so we downgradetorch, and then we use that with the incompatibleflash_attnbinary wheel.To resolve this, use instructlab's
constraints-dev.txtin the firstpip installoperation. This restrictstorchto2.6.0immediately when we first install instructlab, so that we will compileflash_attnagainst thattorchversion.Fixes: #494