add testlib

Author: moesoha

flake.nix

@@ -16,6 +16,7 @@
 				(self: super: {
 					gcc930 = nixpkgs_gcc930.legacyPackages.${super.system}.gcc9;
 				})
+				(import ./testlib/overlay.nix)
 				(import ./gcc/overlay.nix)
 				(import ./checker/overlay.nix)
 			];

gcc/overlay.nix

@@ -6,6 +6,9 @@ self: super: with super; let
 			inherit pname;
 			patches = patches ++ additionalPatches;
 		});
+		extraBuildCommands = ''
+			echo "-idirafter ${testlib}/include" >> $out/nix-support/libc-cflags
+		'';
 	};
 in {
 	luogu-gcc = applyLuogu gcc13 [

testlib/overlay.nix

@@ -0,0 +1,13 @@
+self: super: with super; {
+	testlib = runCommandLocal "testlib" {
+		version = "0.9.41";
+		headerFile = fetchurl {
+			url = "https://github.com/MikeMirzayanov/testlib/raw/68f9f300b6abebec82d2a68d8ca04394f2664fb6/testlib.h";
+			sha256 = "sha256-cPdMVw8rRdYwhq5uTEG7tcX/1EKMupkUu8A5bSm+ENg=";
+		};
+	} ''
+		set -e
+		mkdir -p $out/include
+		cp -v $headerFile $out/include/testlib.h
+	'';
+}