This is merely a little demonstration of nix#6579: `users.sterni.nix.misc.isRestrictEval` returns whether the restrict-eval setting is true or false by exploiting the aforementioned Nix bug. Change-Id: Icca354d1cd6571cdf0804abae27aac91a18cda1e Reviewed-on: https://cl.tvl.fyi/c/depot/+/5692 Autosubmit: sterni <sternenseemann@systemli.org> Reviewed-by: sterni <sternenseemann@systemli.org> Reviewed-by: tazjin <tazjin@tvl.su> Tested-by: BuildkiteCI
		
			
				
	
	
		
			18 lines
		
	
	
	
		
			471 B
		
	
	
	
		
			Nix
		
	
	
	
	
	
			
		
		
	
	
			18 lines
		
	
	
	
		
			471 B
		
	
	
	
		
			Nix
		
	
	
	
	
	
| { ... }:
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| 
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| let
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|   /* Returns true if it is being evaluated using restrict-eval, false if not.
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|      It's more robust than using `builtins.getEnv` since it isn't fooled by
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|      `env -i`.
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| 
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|      See https://github.com/NixOS/nix/issues/6579 for a description of the
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|      behavior. Precise cause in the evaluator / store implementation is unclear.
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| 
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|      Type: bool
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|   */
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|   inRestrictedEval = builtins.pathExists (toString ./guinea-pig + "/.");
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| in
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| 
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| {
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|   inherit inRestrictedEval;
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| }
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