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diff --git a/src/rebar_app_installer.erl b/src/rebar_app_installer.erl
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+%% -------------------------------------------------------------------
+%%
+%% rebar: Erlang Build Tools
+%%
+%% Copyright (c) 2009 Dave Smith (dizzyd@dizzyd.com)
+%%
+%% Permission is hereby granted, free of charge, to any person obtaining a copy
+%% of this software and associated documentation files (the "Software"), to deal
+%% in the Software without restriction, including without limitation the rights
+%% to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+%% copies of the Software, and to permit persons to whom the Software is
+%% furnished to do so, subject to the following conditions:
+%%
+%% The above copyright notice and this permission notice shall be included in
+%% all copies or substantial portions of the Software.
+%%
+%% THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+%% IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+%% FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+%% AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+%% LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+%% OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+%% THE SOFTWARE.
+%% -------------------------------------------------------------------
+-module(rebar_app_installer).
+
+-export([install/2]).
+
+-include("rebar.hrl").
+
+%% ===================================================================
+%% Public API
+%% ===================================================================
+
+install(Config, File) ->
+    %% Load the app name and version from the .app file and construct
+    %% the app identifier
+    {ok, AppName, AppData} = rebar_app_utils:load_app_file(File),
+    Vsn = proplists:get_value(vsn, AppData),
+    AppId = ?FMT("~s-~s", [AppName, Vsn]),
+    ?CONSOLE("Installing: ~s\n", [AppId]),
+
+    %% Check the erlang lib directory to see if this app identifier
+    %% is already present.
+    AppDir = filename:join([code:lib_dir(), AppId]),
+    case filelib:is_dir(AppDir) of
+        true ->
+            %% Already exists -- check for force=1 global flag and only
+            %% continue if it's set
+            case rebar_config:get_global(force, "0") of
+                "0" ->
+                    ?ERROR("~s already exists. Installation failed."),
+                    ?FAIL;
+                "1" ->
+                    ?WARN("~s already exists, but forcibly overwriting."),                    
+            end;
+        false ->
+            ok
+    end,
+
+    %% Wipe out any previous versions
+    ok = rebar_file_utils:rm_rf(Appdir),
+
+    %% Re-create target
+    ok = rebar_file_utils:mkdir_p(AppDir),
+
+    %% By default we copy the ebin, include, src and priv directories
+