Add keyfinder-cli: musical key detection

pkgs/applications/audio/keyfinder-cli/default.nix

@@ -0,0 +1,32 @@
+{ stdenv, fetchFromGitHub, libav, libkeyfinder }:
+
+stdenv.mkDerivation rec {
+  version = "20150125";
+  name = "keyfinder-cli-${version}";
+
+  src = fetchFromGitHub {
+    repo = "keyfinder-cli";
+    owner = "EvanPurkhiser";
+    rev = "3a6f598b3661fdba73ada81cd200a6e56c23ddca";
+    sha256 = "05k4g9zdzi4q81p8lax9b2j4bcg1bpp04sdbza5i5pfz2fng2cf7";
+  };
+
+  meta = with stdenv.lib; {
+    description = "Musical key detection for digital audio (command-line tool)";
+    longDescription = ''
+      This small utility is the automation-oriented DJ's best friend. By making
+      use of Ibrahim Sha'ath's high quality libKeyFinder library, it can be
+      used to estimate the musical key of many different audio formats.
+    '';
+    homepage = https://github.com/EvanPurkhiser/keyfinder-cli;
+    license = with licenses; gpl3Plus;
+    platforms = with platforms; linux;
+    maintainers = with maintainers; [ nckx ];
+  };
+
+  buildInputs = [ libav libkeyfinder ];
+
+  makeFlagsArray = "PREFIX=$(out)";
+
+  enableParallelBuilding = true;
+}

pkgs/top-level/all-packages.nix

@@ -10346,6 +10346,8 @@ let
 
   keyfinder = callPackage ../applications/audio/keyfinder { };
 
+  keyfinder-cli = callPackage ../applications/audio/keyfinder-cli { };
+
   keymon = callPackage ../applications/video/key-mon { };
 
   kid3 = callPackage ../applications/audio/kid3 {