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exarkun/double-python-overlay.nix Secret

Created September 26, 2019 18:01
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double-python-overlay.nix
let
overlayA = self: super: {
python27 = super.python27.override {
packageOverrides = python-self: python-super: {
foo = python-super.twisted;
};
};
};
overlayB = self: super: {
python27 = super.python27.override {
packageOverrides = python-self: python-super: {
bar = python-super.foo;
};
};
};
in
with import <nixpkgs> {
overlays = [
overlayA
overlayB
];
};
python27.pkgs.bar
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