2 files changed, 5 insertions, 4 deletions
diff --git a/pkgs/tools/misc/cpulimit/default.nix b/pkgs/tools/misc/cpulimit/default.nix
index 547e2a1f059..1978476a12d 100644
--- a/pkgs/tools/misc/cpulimit/default.nix
+++ b/pkgs/tools/misc/cpulimit/default.nix
@@ -9,12 +9,13 @@ stdenv.mkDerivation rec {
     sha256 = "0xf0r6zxaqan1drz61nqf95p2pkiiihpvrjhrr9dx9j3vswyx31g";
   };
 
-  buildFlags = with stdenv;
+  buildFlags = with stdenv; [ (
     if isDarwin then "osx"
     else if isFreeBSD then "freebsd"
-    else "cpulimit";
+    else "cpulimit"
+  ) ];
 
-  installFlags = "PREFIX=$(out)";
+  installFlags = [ "PREFIX=$(out)" ];
 
   meta = with stdenv.lib; {
     homepage = http://limitcpu.sourceforge.net/;
diff --git a/pkgs/tools/misc/ent/default.nix b/pkgs/tools/misc/ent/default.nix
index 1c0401e2ead..7e8d04b4209 100644
--- a/pkgs/tools/misc/ent/default.nix
+++ b/pkgs/tools/misc/ent/default.nix
@@ -14,7 +14,7 @@ stdenv.mkDerivation {
 
   buildInputs = [ unzip ];
 
-  buildFlags = if stdenv.cc.isClang then [ "CC=clang" ] else null;
+  buildFlags = stdenv.lib.optional stdenv.cc.isClang "CC=clang";
 
   installPhase = ''
     mkdir -p $out/bin