5 files changed, 7 insertions, 10 deletions
diff --git a/pkgs/tools/audio/gvolicon/default.nix b/pkgs/tools/audio/gvolicon/default.nix
index c66c6bc1f7e0..9029eb38b06f 100644
--- a/pkgs/tools/audio/gvolicon/default.nix
+++ b/pkgs/tools/audio/gvolicon/default.nix
@@ -16,7 +16,7 @@ stdenv.mkDerivation {
 
   makeFlags = [ "PREFIX=$(out)" ];
 
-  NIX_CFLAGS_COMPILE = [ "-D_POSIX_C_SOURCE" ];
+  NIX_CFLAGS_COMPILE = "-D_POSIX_C_SOURCE";
 
   meta = {
     description = "A simple and lightweight volume icon that sits in your system tray";
diff --git a/pkgs/tools/filesystems/irods/default.nix b/pkgs/tools/filesystems/irods/default.nix
index 56fc2e40ba2f..b6099c099f32 100644
--- a/pkgs/tools/filesystems/irods/default.nix
+++ b/pkgs/tools/filesystems/irods/default.nix
@@ -30,11 +30,8 @@ in rec {
     #                         but we don't use /usr with nix, so remove only 2 items.
     patches = [ ./irods_root_path.patch ];
 
-    NIX_CFLAGS_COMPILE = [
-      # fix build with recent llvm versions
-      "-Wno-deprecated-register"
-      "-Wno-deprecated-declarations"
-    ];
+    # fix build with recent llvm versions
+    NIX_CFLAGS_COMPILE = "-Wno-deprecated-register -Wno-deprecated-declarations";
 
     preConfigure = common.preConfigure + ''
       patchShebangs ./test
diff --git a/pkgs/tools/misc/ldmtool/default.nix b/pkgs/tools/misc/ldmtool/default.nix
index d1d3996bd620..734586fb1ab3 100644
--- a/pkgs/tools/misc/ldmtool/default.nix
+++ b/pkgs/tools/misc/ldmtool/default.nix
@@ -27,7 +27,7 @@ stdenv.mkDerivation rec {
    '';
 
    # glib-2.62 deprecations
-   NIX_CFLAGS_COMPILE = [ "-DGLIB_DISABLE_DEPRECATION_WARNINGS" ];
+   NIX_CFLAGS_COMPILE = "-DGLIB_DISABLE_DEPRECATION_WARNINGS";
 
    configureScript = "sh autogen.sh";
 
diff --git a/pkgs/tools/security/gpgstats/default.nix b/pkgs/tools/security/gpgstats/default.nix
index 34e8c7bd6796..c3a14f62c766 100644
--- a/pkgs/tools/security/gpgstats/default.nix
+++ b/pkgs/tools/security/gpgstats/default.nix
@@ -16,8 +16,8 @@ stdenv.mkDerivation rec {
     cp gpgstats $out/bin
   '';
 
-  NIX_CFLAGS_COMPILE = stdenv.lib.optionals (!stdenv.is64bit)
-    [ "-D_FILE_OFFSET_BITS=64" "-DLARGEFILE_SOURCE=1" ];
+  NIX_CFLAGS_COMPILE = stdenv.lib.optionalString (!stdenv.is64bit)
+    "-D_FILE_OFFSET_BITS=64 -DLARGEFILE_SOURCE=1";
 
   meta = with stdenv.lib; {
     description = "Calculates statistics on the keys in your gpg key-ring";
diff --git a/pkgs/tools/text/sgml/jade/default.nix b/pkgs/tools/text/sgml/jade/default.nix
index b7f8bd6df381..2cc40510121b 100644
--- a/pkgs/tools/text/sgml/jade/default.nix
+++ b/pkgs/tools/text/sgml/jade/default.nix
@@ -19,7 +19,7 @@ stdenv.mkDerivation rec {
 
   buildInputs = [ gnum4 ];
 
-  NIX_CFLAGS_COMPILE = [ "-Wno-deprecated" ];
+  NIX_CFLAGS_COMPILE = "-Wno-deprecated";
 
   preInstall = ''
     install -d -m755 "$out"/lib