diff --git a/midipix.nix b/midipix.nix
new file mode 100644
index 0000000..e586c0c
--- /dev/null
+++ b/midipix.nix
@@ -0,0 +1,12 @@
+with import <nixpkgs> {};
+
+
+stdenv.mkDerivation rec {
+  name = "foo-${version}";
+  version = "2016-07-13";
+  src = fetchgit {
+    url = "git://midipix.org/slibtool";
+    rev = "4f56fd184ef6020626492a6f954a486d54f8b7ba";
+    sha256 = "0nmyp5yrzl9dbq85wyiimsj9fklb8637a1936nw7zzvlnzkgh28n";
+  };
+}
diff --git a/release.nix b/release.nix
index 985abd5..5deb103 100644
--- a/release.nix
+++ b/release.nix
@@ -17,6 +17,7 @@ with (import <nixpkgs/pkgs/top-level/release-lib.nix> { inherit supportedSystems
   teleragno.www.tag = import ./github-teleragno-www.nix;
   teleragno.www.MASTER = import ./github-teleragno-www-MASTER.nix;
 
+  midpix.slibtool = import ./midipix.nix
 } /*  // {
   # Simply assign a derivation to an attribute to have it built.
   hello_world_1 = pkgs_x86_64_linux.hello;