diff --git a/pkgs/by-name/el/elkhound/package.nix b/pkgs/by-name/el/elkhound/package.nix
index f1d4bbb4266f..8f8daf2823ad 100644
--- a/pkgs/by-name/el/elkhound/package.nix
+++ b/pkgs/by-name/el/elkhound/package.nix
@@ -10,13 +10,13 @@
 
 stdenv.mkDerivation rec {
   pname = "elkhound";
-  version = "unstable-2020-04-13";
+  version = "0-unstable-2020-04-13";
 
   src = fetchFromGitHub {
     owner = "WeiDUorg";
     repo = "elkhound";
     rev = "a7eb4bb2151c00cc080613a770d37560f62a285c";
-    sha256 = "sha256-Y96OFpBNrD3vrKoEZ4KdJuI1Q4RmYANsu7H3ZzfaA6g=";
+    hash = "sha256-Y96OFpBNrD3vrKoEZ4KdJuI1Q4RmYANsu7H3ZzfaA6g=";
   };
 
   postPatch = ''
@@ -32,6 +32,8 @@ stdenv.mkDerivation rec {
     perl
   ];
 
+  cmakeFlags = [ "-Wno-dev" ]; # it vomits warnings that only upstream cares about
+
   installPhase = ''
     runHook preInstall
 
@@ -51,5 +53,6 @@ stdenv.mkDerivation rec {
     license = licenses.bsd3;
     maintainers = with maintainers; [ peterhoeg ];
     platforms = platforms.unix;
+    mainProgram = "elkhound";
   };
 }