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-rw-r--r--nixpkgs/pkgs/tools/text/wdiff/default.nix1
1 files changed, 1 insertions, 0 deletions
diff --git a/nixpkgs/pkgs/tools/text/wdiff/default.nix b/nixpkgs/pkgs/tools/text/wdiff/default.nix
index d6ed960cce1e..d358dcdd0c4e 100644
--- a/nixpkgs/pkgs/tools/text/wdiff/default.nix
+++ b/nixpkgs/pkgs/tools/text/wdiff/default.nix
@@ -21,6 +21,7 @@ stdenv.mkDerivation rec {
   meta = with lib; {
     homepage = "https://www.gnu.org/software/wdiff/";
     description = "Comparing files on a word by word basis";
+    mainProgram = "wdiff";
     license = licenses.gpl3Plus;
     maintainers = with maintainers; [ eelco SuperSandro2000 ];
     platforms = platforms.unix;