treewide: fix *Flags

pkgs/tools/filesystems/fatresize/default.nix

@@ -25,9 +25,7 @@ stdenv.mkDerivation rec {
 
   # Filesystem resize functions were reintroduced in parted 3.1 due to no other available free alternatives
   # but in a sepparate library -> libparted-fs-resize --- that's why the added LDFLAG
-  makeFlags = ''
-    LDFLAGS=-lparted-fs-resize
-  '';
+  makeFlags = [ "LDFLAGS=-lparted-fs-resize" ];
 
   propagatedBuildInputs = [ parted utillinux ];
 

pkgs/tools/inputmethods/fcitx/unwrapped.nix

@@ -75,20 +75,20 @@ stdenv.mkDerivation rec {
     libxkbcommon libxml2 dbus cairo gtk2 gtk3 pango qt4 libuuid
   ];
 
-  cmakeFlags = ''
-    -DENABLE_QT_IM_MODULE=ON
-    -DENABLE_GTK2_IM_MODULE=ON
-    -DENABLE_GTK3_IM_MODULE=ON
-    -DENABLE_GIR=OFF
-    -DENABLE_OPENCC=OFF
-    -DENABLE_PRESAGE=OFF
-    -DENABLE_XDGAUTOSTART=OFF
-    -DENABLE_PINYIN=${if withPinyin then "ON" else "OFF"}
-    -DENABLE_TABLE=ON
-    -DENABLE_SPELL=ON
-    -DENABLE_QT_GUI=ON
-    -DXKB_RULES_XML_FILE='${xkeyboard_config}/share/X11/xkb/rules/evdev.xml'
-    '';
+  cmakeFlags = [
+    "-DENABLE_QT_IM_MODULE=ON"
+    "-DENABLE_GTK2_IM_MODULE=ON"
+    "-DENABLE_GTK3_IM_MODULE=ON"
+    "-DENABLE_GIR=OFF"
+    "-DENABLE_OPENCC=OFF"
+    "-DENABLE_PRESAGE=OFF"
+    "-DENABLE_XDGAUTOSTART=OFF"
+    "-DENABLE_PINYIN=${if withPinyin then "ON" else "OFF"}"
+    "-DENABLE_TABLE=ON"
+    "-DENABLE_SPELL=ON"
+    "-DENABLE_QT_GUI=ON"
+    "-DXKB_RULES_XML_FILE='${xkeyboard_config}/share/X11/xkb/rules/evdev.xml'"
+  ];
 
   meta = with stdenv.lib; {
     homepage    = https://github.com/fcitx/fcitx;

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/;

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

pkgs/tools/package-management/librepo/default.nix

@@ -13,7 +13,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ cmake pkgconfig ];
 
-  cmakeFlags="-DPYTHON_DESIRED=${stdenv.lib.substring 0 1 python.pythonVersion}";
+  cmakeFlags = ["-DPYTHON_DESIRED=${stdenv.lib.substring 0 1 python.pythonVersion}" ];
 
   buildInputs = [ python libxml2 glib openssl curl check gpgme ];
 

pkgs/tools/system/ipmitool/default.nix

@@ -25,7 +25,7 @@ stdenv.mkDerivation {
       ${if static then "LDFLAGS=-static --enable-static --disable-shared" else "--enable-shared"}
     )
   '';
-  makeFlags = if static then "AM_LDFLAGS=-all-static" else "";
+  makeFlags = stdenv.lib.optional static "AM_LDFLAGS=-all-static";
   dontDisableStatic = static;
 
   meta = with lib; {