pkgs/tools: stdenv.lib -> lib

pkgs/tools/security/asc-key-to-qr-code-gif/default.nix

@@ -23,12 +23,12 @@ stdenv.mkDerivation {
     substitutions = [
       ''--replace "convert" "${imagemagick}/bin/convert"''
       ''--replace "qrencode" "${qrencode.bin}/bin/qrencode"''
-    ] ++ stdenv.lib.optional testQR [
+    ] ++ lib.optional testQR [
       ''--replace "hash zbarimg" "true"'' # hash does not work on NixOS
       ''--replace "$(zbarimg --raw" "$(${zbar.out}/bin/zbarimg --raw"''
     ];
   in ''
-    substituteInPlace asc-to-gif.sh ${stdenv.lib.concatStringsSep " " substitutions}
+    substituteInPlace asc-to-gif.sh ${lib.concatStringsSep " " substitutions}
   '';
 
   installPhase = ''