diff --git a/pkgs/development/compilers/rust/default.nix b/pkgs/development/compilers/rustc/0.11.nix
similarity index 65%
rename from pkgs/development/compilers/rust/default.nix
rename to pkgs/development/compilers/rustc/0.11.nix
index 2c27cf778a14..1c3b09b0985a 100644
--- a/pkgs/development/compilers/rust/default.nix
+++ b/pkgs/development/compilers/rustc/0.11.nix
@@ -14,23 +14,25 @@
 
 */
 
-with if stdenv.system == "i686-linux" then {
-  platform = "linux-i386";
-  snapshot = "84339ea0f796ae468ef86797ef4587274bec19ea";
-  target = "i686-unknown-linux-gnu";
-} else if stdenv.system == "x86_64-linux" then {
-  platform = "linux-x86_64";
-  snapshot = "bd8a6bc1f28845b7f4b768f6bfa06e7fbdcfcaae";
-  target = "x86_64-unknown-linux-gnu";
-} else if stdenv.system == "x86_64-darwin" then {
-  platform = "macos-x86_64";
-  snapshot = "4a8c2e1b7634d73406bac32a1a97893ec3ed818d";
-} else {};
-let snapshotDate = "2014-06-21";
+with ((import ./common.nix) {inherit stdenv; version = "0.11.0"; });
+
+let snapshot = if stdenv.system == "i686-linux"
+      then "84339ea0f796ae468ef86797ef4587274bec19ea"
+      else if stdenv.system == "x86_64-linux"
+      then "bd8a6bc1f28845b7f4b768f6bfa06e7fbdcfcaae"
+      else if stdenv.system == "i686-darwin"
+      then "3f25b2680efbab16ad074477a19d49dcce475977"
+      else if stdenv.system == "x86_64-darwin"
+      then "4a8c2e1b7634d73406bac32a1a97893ec3ed818d"
+      else abort "no-snapshot for platform ${stdenv.system}";
+    snapshotDate = "2014-06-21";
     snapshotRev = "db9af1d";
-    snapshotName = "rust-stage0-${snapshotDate}-${snapshotRev}-${platform}-${snapshot}.tar.bz2"; in
-stdenv.mkDerivation {
-  name = "rust-0.11.0";
+    snapshotName = "rust-stage0-${snapshotDate}-${snapshotRev}-${platform}-${snapshot}.tar.bz2";
+
+in stdenv.mkDerivation {
+  inherit name;
+  inherit version;
+  inherit meta;
 
   src = fetchurl {
     url = http://static.rust-lang.org/dist/rust-0.11.0.tar.gz;
@@ -67,14 +69,4 @@ stdenv.mkDerivation {
 
   buildInputs = [ which file perl curl python27 makeWrapper ];
   enableParallelBuilding = true;
-
-  meta = with stdenv.lib; {
-    homepage = http://www.rust-lang.org/;
-    description = "A safe, concurrent, practical language";
-    maintainers = with maintainers; [ madjar cstrahan ];
-    license = map (builtins.getAttr "shortName") [ licenses.mit licenses.asl20 ];
-    # platforms as per http://static.rust-lang.org/doc/master/tutorial.html#getting-started
-    platforms = [ "i686-linux" "x86_64-linux" "x86_64-darwin" ];
-  };
 }
-
diff --git a/pkgs/development/compilers/rustc/common.nix b/pkgs/development/compilers/rustc/common.nix
new file mode 100644
index 000000000000..7af19a40c790
--- /dev/null
+++ b/pkgs/development/compilers/rustc/common.nix
@@ -0,0 +1,36 @@
+{stdenv, version}:
+
+{
+  inherit version;
+
+  platform = if stdenv.system == "i686-linux"
+    then "linux-i386"
+    else if stdenv.system == "x86_64-linux"
+    then "linux-x86_64"
+    else if stdenv.system == "i686-darwin"
+    then "macos-i386"
+    else if stdenv.system == "x86_64-darwin"
+    then "macos-x86_64"
+    else abort "no snapshot to boostrap for this platform (missing platform url suffix)";
+
+  target = if stdenv.system == "i686-linux"
+    then "i686-unknown-linux-gnu"
+    else if stdenv.system == "x86_64-linux"
+    then "x86_64-unknown-linux-gnu"
+    else if stdenv.system == "i686-darwin"
+    then "i686-apple-darwin"
+    else if stdenv.system == "x86_64-darwin"
+    then "x86_64-apple-darwin"
+    else abort "no snapshot to boostrap for this platform (missing target triple";
+
+  meta = with stdenv.lib; {
+    homepage = http://www.rust-lang.org/;
+    description = "A safe, concurrent, practical language";
+    maintainers = with maintainers; [ madjar cstrahan ];
+    license = map (builtins.getAttr "shortName") [ licenses.mit licenses.asl20 ];
+    # platforms as per http://static.rust-lang.org/doc/master/tutorial.html#getting-started
+    platforms = [ "i686-linux" "x86_64-linux" "x86_64-darwin" ];
+  };
+
+  name = "rustc-${version}";
+}
diff --git a/pkgs/development/compilers/rust/hardcode_paths.patch b/pkgs/development/compilers/rustc/hardcode_paths.patch
similarity index 100%
rename from pkgs/development/compilers/rust/hardcode_paths.patch
rename to pkgs/development/compilers/rustc/hardcode_paths.patch
diff --git a/pkgs/development/compilers/rustc/head.nix b/pkgs/development/compilers/rustc/head.nix
new file mode 100644
index 000000000000..ad33906ae6e9
--- /dev/null
+++ b/pkgs/development/compilers/rustc/head.nix
@@ -0,0 +1,73 @@
+{stdenv, fetchurl, fetchgit, which, file, perl, curl, python27, makeWrapper}:
+
+/* Rust's build process has a few quirks :
+
+- It requires some patched in llvm that haven't landed upstream, so it
+  compiles its own llvm. This might change in the future, so at some
+  point we may be able to switch to nix's llvm.
+
+- The Rust compiler is written is Rust, so it requires a bootstrap
+  compiler, which is downloaded during the build. To make the build
+  pure, we download it ourself before and put it where it is
+  expected. Once the language is stable (1.0) , we might want to
+  switch it to use nix's packaged rust compiler.
+
+*/
+
+with ((import ./common.nix) {inherit stdenv; version = "0.12.0-pre-7a25cf3f3"; });
+
+let snapshot = if stdenv.system == "i686-linux"
+      then "a5e1bb723020ac35173d49600e76b0935e257a6a"
+      else if stdenv.system == "x86_64-linux"
+      then "1a2407df17442d93d1c34c916269a345658045d7"
+      else if stdenv.system == "i686-darwin"
+      then "6648fa88e41ad7c0991a085366e36d56005873ca"
+      else if stdenv.system == "x86_64-darwin"
+      then "71b2d1dfd0abe1052908dc091e098ed22cf272c6"
+      else abort "no-snapshot for platform ${stdenv.system}";
+    snapshotDate = "2014-07-17";
+    snapshotRev = "9fc8394";
+    snapshotName = "rust-stage0-${snapshotDate}-${snapshotRev}-${platform}-${snapshot}.tar.bz2";
+
+in stdenv.mkDerivation {
+  inherit name;
+  inherit version;
+  inherit meta;
+
+  src = fetchgit {
+    url = https://github.com/rust-lang/rust;
+    rev = "7a25cf3f30fa5fae2e868fa910ecc850f5e9ee65";
+    sha256 = "1hx8vd4gn5plbdvr0zvdvqyw9x9r2vbmh112h2f5d2xxsf9p7rf1";
+  };
+
+  # We need rust to build rust. If we don't provide it, configure will try to download it.
+  snapshot = stdenv.mkDerivation {
+    name = "rust-stage0";
+    src = fetchurl {
+      url = "http://static.rust-lang.org/stage0-snapshots/${snapshotName}";
+      sha1 = snapshot;
+    };
+    dontStrip = true;
+    installPhase = ''
+      mkdir -p "$out"
+      cp -r bin "$out/bin"
+    '' + (if stdenv.isLinux then ''
+      patchelf --interpreter "${stdenv.glibc}/lib/${stdenv.gcc.dynamicLinker}" \
+               --set-rpath "${stdenv.gcc.gcc}/lib/:${stdenv.gcc.gcc}/lib64/" \
+               "$out/bin/rustc"
+    '' else "");
+  };
+
+  configureFlags = [ "--enable-local-rust" "--local-rust-root=$snapshot" ];
+
+  # The compiler requires cc, so we patch the source to tell it where to find it
+  patches = [ ./hardcode_paths.patch ./local_stage0.patch ];
+  postPatch = ''
+    substituteInPlace src/librustc/back/link.rs \
+      --subst-var-by "ccPath" "${stdenv.gcc}/bin/cc" \
+      --subst-var-by "arPath" "${stdenv.gcc.binutils}/bin/ar"
+  '';
+
+  buildInputs = [ which file perl curl python27 makeWrapper ];
+  enableParallelBuilding = true;
+}
diff --git a/pkgs/development/compilers/rust/local_stage0.patch b/pkgs/development/compilers/rustc/local_stage0.patch
similarity index 100%
rename from pkgs/development/compilers/rust/local_stage0.patch
rename to pkgs/development/compilers/rustc/local_stage0.patch
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 7942b236b8bd..4de2a30f389d 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -3304,7 +3304,11 @@ let
 
   roadsend = callPackage ../development/compilers/roadsend { };
 
-  rust = callPackage ../development/compilers/rust {};
+  rustc       = callPackage ../development/compilers/rustc/0.11.nix {};
+  rustcMaster = callPackage ../development/compilers/rustc/head.nix {};
+
+  rust = rustc;
+
 
   sbclBootstrap = callPackage ../development/compilers/sbcl/bootstrap.nix {};
   sbcl = callPackage ../development/compilers/sbcl {