shell: add a nixpkgs-compat file
We are now able to pull in the same revision of nixpkgs as listed in the lock file.
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@ -5,6 +5,8 @@
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let
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inherit (builtins) attrNames readDir;
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nixpkgs = toString (import ./nixpkgs-compat.nix);
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hostname = lib.fileContents /etc/hostname;
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host = "/etc/nixos/hosts/${hostname}.nix";
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config =
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@ -24,7 +26,7 @@ in
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networking.hostName = hostname;
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nix.nixPath = [
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"nixpkgs=${<nixpkgs>}"
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"nixpkgs=${nixpkgs}"
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"nixos-config=/etc/nixos/configuration.nix"
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"nixpkgs-overlays=/etc/nixos/overlays"
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];
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13
nixpkgs-compat.nix
Normal file
13
nixpkgs-compat.nix
Normal file
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@ -0,0 +1,13 @@
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let
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inherit (builtins)
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fetchTarball
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fromJSON
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readFile
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;
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nixos = (fromJSON (readFile ./flake.lock)).nodes.nixos.locked;
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nixpkgs = fetchTarball {
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url = "https://github.com/NixOS/nixpkgs/archive/${nixos.rev}.tar.gz";
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sha256 = nixos.narHash;
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};
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in
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nixpkgs
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