问题
I have some package to override in my configuration.nix. So I write the code as follows:
nixpkgs.config = {
allowUnfree = true;
packageOverrides = {
pkgs: rec {
#mumble + pulse audio
mumble = pkgs.mumble.override {
pulseSupport = true;
};
#kernel for intel ethernet and Testing e1000e package override
linuxPackages.e1000e = pkgs.linuxPackages.e1000e.overrideDerivation (attrs: {
name = "e1000e-3.3.3-${config.boot.kernelPackages.kernel.version}";
src = fetchurl {
url = "https://www.dropbox.com/s/pxx883hx9763ygn/e1000e-3.3.3.tar.gz?dl=0";
sha256 = "1s2w54927fsxg0f037h31g3qkajgn5jd0x3yi1chxsyckrcr0x80";
};
});
};
};
};
but when I do nixos-rebuild switch
, I got the following error:
syntax error, unexpected ':', expecting '.' or '=', at 37,11
which is at pkgs: rec {...
What did I do wrong? At first I write it by separating the pkgs like this:
packageOverrides = {
pkgs: with pkgs: {......}; #this is for mumble
pkgs: rec {...}; #this is for kernel
};
and still got the same error.
回答1:
The proper solution is:
nixpkgs.config = {
allowUnfree = true;
packageOverrides = super: let self = super.pkgs; in {
mumble = super.mumble.override { pulseSupport = true; };
linuxPackages = super.linuxPackages // {
e1000e = super.linuxPackages.e1000e.overrideDerivation (old: {
name = "e1000e-3.3.3-${config.boot.kernelPackages.kernel.version}";
src = fetchurl {
url = "https://www.dropbox.com/s/pxx883hx9763ygn/e1000e-3.3.3.tar.gz?dl=0";
sha256 = "1s2w54927fsxg0f037h31g3qkajgn5jd0x3yi1chxsyckrcr0x80";
};
});
};
};
}
The variable super
refers to the Nixpkgs set before the overrides are applied and self
refers to it after the overrides are applied. It's important to distinguish these two explicitly to avoid infinite recursions, etc.
Also, note that your override
linuxPackages.e1000e = pkgs.linuxPackages.e1000e.overrideDerivation ...
replaces the linuxPackages
attribute set with one that contains nothing but the (overriden) e1000e
derivation. That's probably not what you want.
来源:https://stackoverflow.com/questions/36000514/how-to-override-2-two-packages-in-nixos-configuration-nix