2 files changed, 8 insertions, 5 deletions
diff --git a/pkgs/applications/networking/browsers/dillo/default.nix b/pkgs/applications/networking/browsers/dillo/default.nix
index 73094767bf3d..ab1e0822bf1a 100644
--- a/pkgs/applications/networking/browsers/dillo/default.nix
+++ b/pkgs/applications/networking/browsers/dillo/default.nix
@@ -17,7 +17,7 @@ stdenv.mkDerivation rec {
   buildInputs = with stdenv.lib;
   [ perl fltk openssl libjpeg libpng libXcursor libXi libXinerama ];
 
-  configureFlags =  "--enable-ssl";
+  configureFlags = [ "--enable-ssl" ];
 
   meta = with stdenv.lib; {
     homepage = https://www.dillo.org/;
diff --git a/pkgs/applications/networking/znc/default.nix b/pkgs/applications/networking/znc/default.nix
index 30fa41de12d1..ca5624d5b73f 100644
--- a/pkgs/applications/networking/znc/default.nix
+++ b/pkgs/applications/networking/znc/default.nix
@@ -24,10 +24,13 @@ stdenv.mkDerivation rec {
     ++ optional withTcl tcl
     ++ optional withCyrus cyrus_sasl;
 
-  configureFlags = optionalString withPerl "--enable-perl "
-    + optionalString withPython "--enable-python "
-    + optionalString withTcl "--enable-tcl --with-tcl=${tcl}/lib "
-    + optionalString withCyrus "--enable-cyrus ";
+  configureFlags = [
+    (stdenv.lib.enableFeature withPerl "perl")
+    (stdenv.lib.enableFeature withPython "python")
+    (stdenv.lib.enableFeature withTcl "tcl")
+    (stdenv.lib.withFeatureAs withTcl "tcl" "${tcl}/lib")
+    (stdenv.lib.enableFeature withCyrus "cyrus")
+  ];
 
   meta = with stdenv.lib; {
     description = "Advanced IRC bouncer";