diff --git a/pkgs/tools/package-management/nix-top/default.nix b/pkgs/tools/package-management/nix-top/default.nix
new file mode 100644
index 000000000000..b334b1270cfe
--- /dev/null
+++ b/pkgs/tools/package-management/nix-top/default.nix
@@ -0,0 +1,50 @@
+{ stdenv
+, lib
+, fetchFromGitHub
+, ruby
+, makeWrapper
+, procps               # ps
+, ncurses              # tput
+, binutils-unwrapped   # strings
+, findutils
+}:
+
+# No gems used, so mkDerivation is fine.
+let
+  additionalPath = lib.makeBinPath [ncurses procps binutils-unwrapped findutils];
+in
+stdenv.mkDerivation rec {
+  name = "nix-top-${version}";
+  version = "0.1.0";
+
+  src = fetchFromGitHub {
+    owner = "samueldr";
+    repo = "nix-top";
+    rev = "v${version}";
+    sha256 = "0l50w90hs3kmdk5kb3cwjzkx38104j6n4ssqs6jpnqfc2znagpni";
+  };
+
+  nativeBuildInputs = [
+    makeWrapper
+  ];
+
+  buildInputs = [
+    ruby
+  ];
+  
+  installPhase = ''
+    mkdir -p $out/bin/
+    cp ./nix-top $out/bin/nix-top
+    wrapProgram $out/bin/nix-top \
+      --prefix PATH : "${additionalPath}"
+  '';
+
+  meta = with lib; {
+    description = "Tracks what nix is building";
+    homepage = https://github.com/samueldr/nix-top;
+    license = licenses.mit;
+    maintainers = with maintainers; [ samueldr ];
+    platforms = platforms.linux;
+    inherit version;
+  };
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 644f5d821e68..3447004cddae 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -21301,6 +21301,8 @@ with pkgs;
 
   nix-template-rpm = callPackage ../build-support/templaterpm { inherit (pythonPackages) python toposort; };
 
+  nix-top = callPackage ../tools/package-management/nix-top { };
+
   nix-repl = callPackage ../tools/package-management/nix-repl { nix = nix1; };
 
   nix-review = callPackage ../tools/package-management/nix-review { };