20 lines
		
	
	
		
			557 B
		
	
	
	
		
			Nix
		
	
	
	
	
	
			
		
		
	
	
			20 lines
		
	
	
		
			557 B
		
	
	
	
		
			Nix
		
	
	
	
	
	
let requiredVersion = import ./lib/minver.nix; in
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if ! builtins ? nixVersion || builtins.compareVersions requiredVersion builtins.nixVersion == 1 then
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  abort ''
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    This version of Nixpkgs requires Nix >= ${requiredVersion}, please upgrade:
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    - If you are running NixOS, use `nixos-rebuild' to upgrade your system.
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    - If you installed Nix using the install script (https://nixos.org/nix/install),
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      it is safe to upgrade by running it again:
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          curl https://nixos.org/nix/install | sh
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  ''
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else
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  import ./pkgs/top-level/impure.nix
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