diff --git a/default.nix b/default.nix
index 6c5d401..97998cf 100644
--- a/default.nix
+++ b/default.nix
@@ -16,7 +16,7 @@ let
   uem = callPackage ./pkgs/u/uem/package.nix {
     pkgs = pkgs;
   };
-  cetcd = callPackage ./pkgs/cetcd/package.nix {};
+  cetcd = callPackage ./pkgs/c/cetcd/package.nix {};
 in
 {
   xbuild = xbuild;
diff --git a/pkgs/c/cetcd/package.nix b/pkgs/c/cetcd/package.nix
index a4dba99..bf347be 100644
--- a/pkgs/c/cetcd/package.nix
+++ b/pkgs/c/cetcd/package.nix
@@ -6,19 +6,28 @@
   ...
 }:
 
-stdenv.mkDerivation {
+let
   pname = "cetcd";
   version = "1.0.0";
+  meta = with lib; {
+    description = "c binding of etcd client api";
+    homepage = "https://github.com/shafreeck/cetcd";
+    license = lib.license.apsl20;
+  };
+in
+stdenv.mkDerivation {
+  pname = pname;
+  version = version;
 
   src = fetchFromGitHub {
     owner = "shen390s";
     repo = "cetcd";
     rev = "master";
-#    sha256 = "sha256-9dzSc3w+yxYzsF/rZe3qIarKOpjt2zvIyjuS5FXngIM=";
+    sha256 = "sha256-BTJXrJyjPp5ynHH5Ct91PFiWATzBal4rsnX84wJ0nCg=";
   };
 
   nativeBuildInputs = [
-    pkgs.make
+    pkgs.gnumake
     pkgs.curl
     pkgs.pkg-config
     pkgs.yajl
@@ -37,4 +46,21 @@ stdenv.mkDerivation {
       make install prefix=$out
       runHook postInstall
   '';
+
+  postInstall = ''
+    mkdir -p $out/lib/pkgconfig
+    cat >$out/lib/pkgconfig/cetcd.pc <<EOF
+    prefix=$out
+    exec_prefix=\''${prefix}
+    libdir=$out/lib
+    includedir=\''${prefix}/include
+
+    Name: ${pname}
+    Description: ${meta.description}
+    Version: ${version}
+    Libs: -L\''${libdir} -lcetcd
+    Cflags: -I\''${includedir}
+    EOF
+  '';
+
 }
diff --git a/pkgs/u/uem/package.nix b/pkgs/u/uem/package.nix
index fc7e9ac..d336302 100644
--- a/pkgs/u/uem/package.nix
+++ b/pkgs/u/uem/package.nix
@@ -30,23 +30,26 @@ stdenv.mkDerivation (finalAttrs: {
   nativeBuildInputs = [ pkgs.roswell ];
   doCheck = true;
 
+  configurePhase = ''
+     mkdir -p .roswell
+     cat >.roswell/init.lisp <<EOF
+     (format nil "Hell,world~%")
+     ;;(push "$src" asdf:*central-registry*)
+     EOF
+  '';
+  
   buildPhase = ''
      set +e
-     export HOME=/build
-     env
-     ros version
+     set -x
+     cat .roswell/init.lisp
+     ros setup
+     # find /build/.roswell
+     # echo running
+     sh -x ros version
      find .
-     mkdir -p $HOME/.roswell
-     cat >$HOME/.roswell/init.lisp <<EOF
-     ;; (ql:quickload 'asdf-driver)
-     (let ((cwd (parse-native-namestring (sb-posix:getcwd)
-                                    nil
-                                    *default-pathname-defaults*
-                                    :as-directory t)))
-          (push cwd
-                asdf:*central-registry*))
-     EOF
-
-     ros -l $HOME/.roswell/init.lisp build roswell/uem.ros
+     find /build/source
+     # ros build $src/roswell/uem.ros
+     mkdir -p $out
+     cp .roswell/init.lisp $out
   '';          
 })