pkgs/tools: stdenv.lib -> lib

pkgs/tools/system/stress-ng/default.nix

@@ -17,7 +17,7 @@ stdenv.mkDerivation rec {
 
   # All platforms inputs then Linux-only ones
   buildInputs = [ judy libbsd libgcrypt zlib ]
-    ++ stdenv.lib.optionals stdenv.hostPlatform.isLinux [
+    ++ lib.optionals stdenv.hostPlatform.isLinux [
       attr keyutils libaio libapparmor libcap lksctp-tools
     ];
 
@@ -28,7 +28,7 @@ stdenv.mkDerivation rec {
     "BASHDIR=${placeholder "out"}/share/bash-completion/completions"
   ];
 
-  NIX_CFLAGS_COMPILE = stdenv.lib.optionalString stdenv.hostPlatform.isMusl "-D_LINUX_SYSINFO_H=1";
+  NIX_CFLAGS_COMPILE = lib.optionalString stdenv.hostPlatform.isMusl "-D_LINUX_SYSINFO_H=1";
 
   # Won't build on i686 because the binary will be linked again in the
   # install phase without checking the dependencies. This will prevent