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Summary
Calling
pip install
multiple times can (deeply unfortunately) allow an environment to become out-of-sync;pip
doesn't "remember" the constraints of previous installation commands.One of the largest effects here is that doing
pip install -e .
followed bypip install git+<qiskit>@main
installsqiskit-terra
from the initial installation (viaqiskit==0.45.2
), then installsqiskit==1.0.0.dev0
from Git, which is an incompatible environment. Doing the whole environment resolution in a singlepip install
command fixes this, as theqiskit
dependency is correctly resolved to be only the1.0.0.dev0
version.Details and comments