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e0816431a2
Otherwise references to the Python interpreter inside the set are wrong, as demonstrated by: ``` nix with import <nixpkgs> { }; let python' = python3.override { packageOverrides = final: prev: { requests = prev.requests.overridePythonAttrs(old: { version = "1337"; }); }; }; in python'.pkgs.python.pkgs.requests ``` which returns the _non_ overriden requests. And the same with `self`: ``` with import <nixpkgs> { }; let python' = python3.override { self = python'; packageOverrides = final: prev: { requests = prev.requests.overridePythonAttrs(old: { version = "1337"; }); }; }; in python'.pkgs.python.pkgs.requests ``` which returns the overriden requests. This can manifest itself as file collisions when constructing environments or as subtly incorrect dependency graphs. |
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