quicklispPackages: add a basic set of packages, make sure that quicklispPackages_asdf_3_1 can be built completely

pkgs/development/lisp-modules/quicklisp-to-nix-output/let-plus.nix

@@ -0,0 +1,21 @@
+args @ { fetchurl, ... }:
+rec {
+  baseName = ''let-plus'';
+  version = ''20170124-git'';
+
+  description = ''Destructuring extension of LET*.'';
+
+  deps = [ args."alexandria" args."anaphora" ];
+
+  src = fetchurl {
+    url = ''http://beta.quicklisp.org/archive/let-plus/2017-01-24/let-plus-20170124-git.tgz'';
+    sha256 = ''1hfsw4g36vccz2lx6gk375arjj6y85yh9ch3pq7yiybjlxx68xi8'';
+  };
+
+  overrides = x: {
+    postInstall = ''
+        echo "$CL_SOURCE_REGISTRY"
+        NIX_LISP_PRELAUNCH_HOOK='nix_lisp_run_single_form "(asdf:load-system :let-plus)"' "$out/bin/let-plus-lisp-launcher.sh" ""
+    '';
+  };
+}