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let
pkgs_ = with pkgs; {
a = derivation {
name = "a";
system = builtins.currentSystem;
builder = "/bin/sh";
args = [ "-c" "touch $out" ];
inherit b;
};
b = derivation {
name = "b";
system = builtins.currentSystem;
builder = "/bin/sh";
args = [ "-c" "touch $out" ];
};
c = b;
};
packageOverrides = p: {
b = derivation (p.b.drvAttrs // { name = "b-overridden"; });
};
pkgs = pkgs_ // (packageOverrides pkgs_);
in pkgs.a.b.name
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