treewide: use optionalString instead of 'then ""'

1 files changed, 4 insertions, 4 deletions

diff --git a/pkgs/applications/editors/texmacs/darwin.nix b/pkgs/applications/editors/texmacs/darwin.nix
index ff090dd3259a..8c74d8c5c8f2 100644
--- a/pkgs/applications/editors/texmacs/darwin.nix
+++ b/pkgs/applications/editors/texmacs/darwin.nix
@@ -47,10 +47,10 @@ stdenv.mkDerivation {
 
   postInstall = "wrapProgram $out/Applications/TeXmacs-${version}/Contents/MacOS/TeXmacs --suffix PATH : " +
     "${ghostscript}/bin:" +
-    (if aspell == null then "" else "${aspell}/bin:") +
-    (if tex == null then "" else "${tex}/bin:") +
-    (if netpbm == null then "" else "${lib.getBin netpbm}/bin:") +
-    (if imagemagick == null then "" else "${imagemagick}/bin:");
+    (lib.optionalString (aspell != null) "${aspell}/bin:") +
+    (lib.optionalString (tex != null) "${tex}/bin:") +
+    (lib.optionalString (netpbm != null) "${lib.getBin netpbm}/bin:") +
+    (lib.optionalString (imagemagick != null) "${imagemagick}/bin:");
 
   enableParallelBuilding = true;