Cleanup of various echo and debug messages. Added top-level mingw.nix for use with nix-env, because many asserts are broken all-packages.nix does not work with mingw stdenv.

svn path=/nixpkgs/trunk/; revision=6142

pkgs/stdenv/mingw/default.nix

@@ -79,6 +79,7 @@ let {
           gcc = gccCore;
           shell = msysShell;
           inherit curl;
+          isDarwin = false;
         };
 
       mkDerivationFun = {

pkgs/stdenv/mingw/fetchurl/builder.sh

@@ -15,7 +15,6 @@ if test -z "$out"; then
 fi
 
 header "downloading $out from $url"
-echo "curl is $curl"
 $curl --fail --location --max-redirs 20 "$url" > "$out"
 
 if test "$NIX_OUTPUT_CHECKED" != "1"; then
@@ -30,7 +29,6 @@ if test "$NIX_OUTPUT_CHECKED" != "1"; then
     fi
 fi
 
-echo "chmod is $chmod"
 $chmod a-x $out
 
 stopNest

pkgs/stdenv/mingw/setup.sh

@@ -26,10 +26,10 @@ else
   cd $NIX_BUILD_TOP
 fi
 
-# if test "$NIX_DEBUG" = "1"; then
+if test "$NIX_DEBUG" = "1"; then
     echo "Initial path: $PATH"
     echo "$buildInputs"
-# fi
+fi
 
 # Execute the pre-hook.
 export SHELL=@SHELL@
@@ -211,8 +211,6 @@ trap "closeNest" EXIT
 # then go to the build directory and source in `env-vars' to reproduce
 # the environment used for building.
 dumpVars() {
-    pwd
-    ls
     if test "$noDumpEnvVars" != "1"; then
         export > $NIX_BUILD_TOP/env-vars
     fi

pkgs/top-level/mingw.nix

@@ -0,0 +1,10 @@
+let {
+  pkgs =
+    import ./all-packages.nix {
+      system = "i686-mingw";
+    };
+
+  body = {
+    inherit (pkgs) zlib;
+  };
+}