stdenv relies on this. So ignore self-references (but only in legacy non-structured attributes mode).
		
			
				
	
	
		
			57 lines
		
	
	
	
		
			1.4 KiB
		
	
	
	
		
			Nix
		
	
	
	
	
	
			
		
		
	
	
			57 lines
		
	
	
	
		
			1.4 KiB
		
	
	
	
		
			Nix
		
	
	
	
	
	
| with import ./config.nix;
 | |
| 
 | |
| rec {
 | |
|   dep1 = mkDerivation {
 | |
|     name = "check-reqs-dep1";
 | |
|     builder = builtins.toFile "builder.sh" "mkdir $out; touch $out/file1";
 | |
|   };
 | |
| 
 | |
|   dep2 = mkDerivation {
 | |
|     name = "check-reqs-dep2";
 | |
|     builder = builtins.toFile "builder.sh" "mkdir $out; touch $out/file2";
 | |
|   };
 | |
| 
 | |
|   deps = mkDerivation {
 | |
|     name = "check-reqs-deps";
 | |
|     dep1 = dep1;
 | |
|     dep2 = dep2;
 | |
|     builder = builtins.toFile "builder.sh" ''
 | |
|       mkdir $out
 | |
|       ln -s $dep1/file1 $out/file1
 | |
|       ln -s $dep2/file2 $out/file2
 | |
|     '';
 | |
|   };
 | |
| 
 | |
|   makeTest = nr: allowreqs: mkDerivation {
 | |
|     name = "check-reqs-" + toString nr;
 | |
|     inherit deps;
 | |
|     builder = builtins.toFile "builder.sh" ''
 | |
|       mkdir $out
 | |
|       ln -s $deps $out/depdir1
 | |
|     '';
 | |
|     allowedRequisites = allowreqs;
 | |
|   };
 | |
| 
 | |
|   # When specifying all the requisites, the build succeeds.
 | |
|   test1 = makeTest 1 [ dep1 dep2 deps ];
 | |
| 
 | |
|   # But missing anything it fails.
 | |
|   test2 = makeTest 2 [ dep2 deps ];
 | |
|   test3 = makeTest 3 [ dep1 deps ];
 | |
|   test4 = makeTest 4 [ deps ];
 | |
|   test5 = makeTest 5 [];
 | |
| 
 | |
|   test6 = mkDerivation {
 | |
|     name = "check-reqs";
 | |
|     inherit deps;
 | |
|     builder = builtins.toFile "builder.sh" "mkdir $out; ln -s $deps $out/depdir1";
 | |
|     disallowedRequisites = [dep1];
 | |
|   };
 | |
| 
 | |
|   test7 = mkDerivation {
 | |
|     name = "check-reqs";
 | |
|     inherit deps;
 | |
|     builder = builtins.toFile "builder.sh" "mkdir $out; ln -s $deps $out/depdir1";
 | |
|     disallowedRequisites = [test1];
 | |
|   };
 | |
| }
 |