What happened?

The canary builds are failing with a tlz import error. This is due to the build invoking conda init --install.

See https://github.com/conda/conda/runs/7731850991?check_suite_focus=true#step:3:761

Tasks

• Add cytoolz as host dependency #11699
• Require toolz & soften cytoolz dependency #11700
• Require toolz & soften cytoolz dependency conda-forge/conda-feedstock#172
• Require toolz & soften cytoolz dependency AnacondaRecipes/conda-feedstock#10
• Drop cytoolz usage conda-build#4556
• Revert dropping conda._vendor.toolz #11704
• Add conda._vendor.toolz fallback for tlz #11709