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Pants

<https://github.com/pantsbuild/pants/issues/17978|#17978 `[python] interpreter_constraints` is not used as the default IC for user resolves.>
Issue created by <https://github.com/jsirois|jsirois>
As of Pants 2.16.0.dev4 (main HEAD currently), the following configuration is needed to ensure the `python-default` resolve gets the repo-local default IC and not the Pants-embedded default IC:  

<https://github.com/pantsbuild/pants/blob/05b9465b70064d4d5be2ce02f011af1c73428ed9/pants.toml#L130-L147|pants/pants.toml>

Lines 130 to 147 in &lt;/pantsbuild/pants/commit/05b9465b70064d4d5be2ce02f011af1c73428ed9|05b9465&gt;

This feels like a bug. If the default ICs written down by the user are not picked as the default IC for a resolve written down by a user, what is the default IC used for then?
<https://github.com/pantsbuild/pants|pantsbuild/pants>