Merge pull request #187 from tsloughter/profiles_dir

make base_dir for a run include the profiles in path, link to shared dep

19 files changed, 183 insertions, 88 deletions

diff --git a/src/rebar.hrl b/src/rebar.hrl
index bbd9a2f..0dfcad0 100644
--- a/src/rebar.hrl
+++ b/src/rebar.hrl
@@ -14,7 +14,6 @@
 -define(FMT(Str, Args), lists:flatten(io_lib:format(Str, Args))).
 
 -define(DEFAULT_BASE_DIR, "_build").
--define(DEFAULT_PROFILE_DIR, "default").
 -define(DEFAULT_PROJECT_APP_DIRS, ["_checkouts", "apps", "lib", "."]).
 -define(DEFAULT_DEPS_DIR, "lib").
 -define(DEFAULT_PLUGINS_DIR, "plugins").
diff --git a/src/rebar3.erl b/src/rebar3.erl
index bd52fee..d7597cd 100644
--- a/src/rebar3.erl
+++ b/src/rebar3.erl
@@ -120,7 +120,7 @@ run_aux(State, GlobalPluginProviders, RawArgs) ->
              end,
 
     %% Process each command, resetting any state between each one
-    BaseDir = rebar_dir:base_dir(State2),
+    BaseDir = rebar_state:get(State, base_dir, ?DEFAULT_BASE_DIR),
     State3 = rebar_state:set(State2, base_dir,
                             filename:join(filename:absname(rebar_state:dir(State2)), BaseDir)),
 
diff --git a/src/rebar_app_discover.erl b/src/rebar_app_discover.erl
index f6ed91b..761c09e 100644
--- a/src/rebar_app_discover.erl
+++ b/src/rebar_app_discover.erl
@@ -14,14 +14,18 @@ do(State, LibDirs) ->
     Dirs = [filename:join(BaseDir, LibDir) || LibDir <- LibDirs],
     Apps = find_apps(Dirs, all),
     ProjectDeps = rebar_state:deps_names(State),
+    DepsDir = rebar_dir:deps_dir(State),
 
     %% Sort apps so we get the same merged deps config everytime
     SortedApps = rebar_utils:sort_deps(Apps),
     lists:foldl(fun(AppInfo, StateAcc) ->
                         StateAcc1 = merge_deps(AppInfo, StateAcc),
-                        ProjectDeps1 = lists:delete(rebar_app_info:name(AppInfo), ProjectDeps),
+                        Name = rebar_app_info:name(AppInfo),
+                        OutDir = filename:join(DepsDir, Name),
+                        AppInfo1 = rebar_app_info:out_dir(AppInfo, OutDir),
+                        ProjectDeps1 = lists:delete(Name, ProjectDeps),
                         rebar_state:project_apps(StateAcc1
-                                                ,rebar_app_info:deps(AppInfo, ProjectDeps1))
+                                                ,rebar_app_info:deps(AppInfo1, ProjectDeps1))
                 end, State, SortedApps).
 
 format_error({module_list, File}) ->
diff --git a/src/rebar_app_info.erl b/src/rebar_app_info.erl
index 7a01307..172170d 100644
--- a/src/rebar_app_info.erl
+++ b/src/rebar_app_info.erl
@@ -28,6 +28,8 @@
          dep_level/2,
          dir/1,
          dir/2,
+         out_dir/1,
+         out_dir/2,
          source/1,
          source/2,
          state/1,
@@ -48,6 +50,7 @@
                      profiles=[default] :: atom(),
                      dep_level=0 :: integer(),
                      dir :: file:name(),
+                     out_dir :: file:name(),
                      source :: string() | tuple() | undefined,
                      state :: rebar_state:t() | undefined,
                      valid :: boolean()}).
@@ -79,7 +82,8 @@ new(AppName, Vsn) ->
 new(AppName, Vsn, Dir) ->
     {ok, #app_info_t{name=ec_cnv:to_binary(AppName),
                      original_vsn=Vsn,
-                     dir=ec_cnv:to_list(Dir)}}.
+                     dir=ec_cnv:to_list(Dir),
+                     out_dir=ec_cnv:to_list(Dir)}}.
 
 %% @doc build a complete version of the app info with all fields set.
 -spec new(atom() | binary() | string(), binary() | string(), file:name(), list()) ->
@@ -88,6 +92,7 @@ new(AppName, Vsn, Dir, Deps) ->
     {ok, #app_info_t{name=ec_cnv:to_binary(AppName),
                      original_vsn=Vsn,
                      dir=ec_cnv:to_list(Dir),
+                     out_dir=ec_cnv:to_list(Dir),
                      deps=Deps}}.
 
 %% @doc discover a complete version of the app info with all fields set.
@@ -133,7 +138,7 @@ app_file_src(AppInfo=#app_info_t{}, AppFileSrc) ->
     AppInfo#app_info_t{app_file_src=ec_cnv:to_list(AppFileSrc)}.
 
 -spec app_file(t()) -> file:filename_all() | undefined.
-app_file(#app_info_t{app_file=undefined, dir=Dir, name=Name}) ->
+app_file(#app_info_t{app_file=undefined, out_dir=Dir, name=Name}) ->
     AppFile = filename:join([ec_cnv:to_list(Dir), "ebin", ec_cnv:to_list(Name)++".app"]),
     case filelib:is_file(AppFile) of
         true ->
@@ -199,12 +204,23 @@ dir(#app_info_t{dir=Dir}) ->
     Dir.
 
 -spec dir(t(), file:name()) -> t().
+dir(AppInfo=#app_info_t{out_dir=undefined}, Dir) ->
+    AppInfo#app_info_t{dir=ec_cnv:to_list(Dir),
+                       out_dir=ec_cnv:to_list(Dir)};
 dir(AppInfo=#app_info_t{}, Dir) ->
     AppInfo#app_info_t{dir=ec_cnv:to_list(Dir)}.
 
+-spec out_dir(t()) -> file:name().
+out_dir(#app_info_t{out_dir=OutDir}) ->
+    OutDir.
+
+-spec out_dir(t(), file:name()) -> t().
+out_dir(AppInfo=#app_info_t{}, OutDir) ->
+    AppInfo#app_info_t{out_dir=ec_cnv:to_list(OutDir)}.
+
 -spec ebin_dir(t()) -> file:name().
-ebin_dir(#app_info_t{dir=Dir}) ->
-    filename:join(Dir, "ebin").
+ebin_dir(#app_info_t{out_dir=OutDir}) ->
+    ec_cnv:to_list(filename:join(OutDir, "ebin")).
 
 -spec source(t(), string() | tuple()) -> t().
 source(AppInfo=#app_info_t{}, Source) ->
diff --git a/src/rebar_app_utils.erl b/src/rebar_app_utils.erl
index cd1124a..143d73d 100644
--- a/src/rebar_app_utils.erl
+++ b/src/rebar_app_utils.erl
@@ -29,9 +29,10 @@
 -export([find/2,
          find/3,
          is_app_src/1,
-         app_src_to_app/1,
+         app_src_to_app/2,
          validate_application_info/1,
-         validate_application_info/2]).
+         validate_application_info/2,
+         format_error/1]).
 
 -include("rebar.hrl").
 -include_lib("providers/include/providers.hrl").
@@ -56,9 +57,8 @@ is_app_src(Filename) ->
     %% this is an .app.src file.
     Filename =/= filename:rootname(Filename, ".app.src").
 
-app_src_to_app(Filename) ->
-    Path = filename:join(rebar_utils:droplast(filename:split(filename:dirname(Filename)))),
-    AppFile = filename:join([Path, "ebin", filename:basename(Filename, ".app.src") ++ ".app"]),
+app_src_to_app(OutDir, Filename) ->
+    AppFile = filename:join([OutDir, "ebin", filename:basename(Filename, ".app.src") ++ ".app"]),
     filelib:ensure_dir(AppFile),
     AppFile.
 
@@ -81,6 +81,9 @@ validate_application_info(AppInfo, AppDetail) ->
             end
     end.
 
+format_error(Error) ->
+    io_lib:format("~p", [Error]).
+
 %% ===================================================================
 %% Internal functions
 %% ===================================================================
diff --git a/src/rebar_dir.erl b/src/rebar_dir.erl
index 3962bf8..fd80fa7 100644
--- a/src/rebar_dir.erl
+++ b/src/rebar_dir.erl
@@ -14,16 +14,18 @@
          get_cwd/0,
          template_globals/1,
          template_dir/1,
-         src_dirs/1,
-         ebin_dir/0,
          processing_base_dir/1,
-         processing_base_dir/2]).
+         processing_base_dir/2,
+         make_relative_path/2]).
 
 -include("rebar.hrl").
 
 -spec base_dir(rebar_state:t()) -> file:filename_all().
 base_dir(State) ->
-    rebar_state:get(State, base_dir, ?DEFAULT_BASE_DIR).
+    Profiles = rebar_state:current_profiles(State),
+    ProfilesStrings = [ec_cnv:to_list(P) || P <- Profiles],
+    ProfilesDir = string:join(ProfilesStrings, "+"),
+    filename:join(rebar_state:get(State, base_dir, ?DEFAULT_BASE_DIR), ProfilesDir).
 
 -spec deps_dir(rebar_state:t()) -> file:filename_all().
 deps_dir(State) ->
@@ -78,15 +80,6 @@ template_globals(State) ->
 template_dir(State) ->
     filename:join([global_config_dir(State), "templates"]).
 
--spec src_dirs([string()]) -> [file:filename(), ...].
-src_dirs([]) ->
-    ["src"];
-src_dirs(SrcDirs) ->
-    SrcDirs.
-
-ebin_dir() ->
-    filename:join(get_cwd(), "ebin").
-
 processing_base_dir(State) ->
     Cwd = get_cwd(),
     processing_base_dir(State, Cwd).
@@ -94,3 +87,12 @@ processing_base_dir(State) ->
 processing_base_dir(State, Dir) ->
     AbsDir = filename:absname(Dir),
     AbsDir =:= rebar_state:get(State, base_dir).
+
+make_relative_path(Source, Target) ->
+    do_make_relative_path(filename:split(Source), filename:split(Target)).
+
+do_make_relative_path([H|T1], [H|T2]) ->
+    do_make_relative_path(T1, T2);
+do_make_relative_path(Source, Target) ->
+    Base = lists:duplicate(max(length(Target) - 1, 0), ".."),
+    filename:join(Base ++ Source).
diff --git a/src/rebar_erlc_compiler.erl b/src/rebar_erlc_compiler.erl
index ce15ab0..9157e2a 100644
--- a/src/rebar_erlc_compiler.erl
+++ b/src/rebar_erlc_compiler.erl
@@ -26,7 +26,7 @@
 %% -------------------------------------------------------------------
 -module(rebar_erlc_compiler).
 
--export([compile/2,
+-export([compile/3,
          clean/2]).
 
 -include("rebar.hrl").
@@ -79,8 +79,8 @@
 %%                           'old_inets'}]}.
 %%
 
--spec compile(rebar_state:t(), file:name()) -> 'ok'.
-compile(Config, Dir) ->
+-spec compile(rebar_state:t(), file:name(), file:name()) -> 'ok'.
+compile(Config, Dir, OutDir) ->
     rebar_base_compiler:run(Config,
                             check_files(rebar_state:get(
                                           Config, xrl_first_files, [])),
@@ -96,7 +96,7 @@ compile(Config, Dir) ->
                                           Config, mib_first_files, [])),
                             filename:join(Dir, "mibs"), ".mib", filename:join([Dir, "priv", "mibs"]), ".bin",
                             fun compile_mib/3),
-    doterl_compile(Config, Dir).
+    doterl_compile(Config, Dir, OutDir).
 
 -spec clean(rebar_state:t(), file:filename()) -> 'ok'.
 clean(Config, AppDir) ->
@@ -128,21 +128,19 @@ clean(Config, AppDir) ->
 %% Internal functions
 %% ===================================================================
 
--spec doterl_compile(rebar_state:t(), file:filename()) -> ok.
-doterl_compile(State, Dir) ->
+-spec doterl_compile(rebar_state:t(), file:filename(), file:filename()) -> ok.
+doterl_compile(State, Dir, ODir) ->
     ErlOpts = rebar_utils:erl_opts(State),
-    doterl_compile(State, Dir, [], ErlOpts).
+    doterl_compile(State, Dir, ODir, [], ErlOpts).
 
-doterl_compile(Config, Dir, MoreSources, ErlOpts) ->
-    OutDir = filename:join(Dir, "ebin"),
+doterl_compile(Config, Dir, ODir, MoreSources, ErlOpts) ->
+    OutDir = filename:join(ODir, "ebin"),
     ErlFirstFilesConf = rebar_state:get(Config, erl_first_files, []),
     ?DEBUG("erl_opts ~p", [ErlOpts]),
     %% Support the src_dirs option allowing multiple directories to
     %% contain erlang source. This might be used, for example, should
     %% eunit tests be separated from the core application source.
-    SrcDirs = lists:map(fun(X) ->
-                                filename:join(Dir, X)
-                        end, rebar_dir:src_dirs(proplists:append_values(src_dirs, ErlOpts))),
+    SrcDirs = [filename:join(Dir, X) || X <- proplists:get_value(src_dirs, ErlOpts, ["src"])],
     AllErlFiles = gather_src(SrcDirs, []) ++ MoreSources,
 
     %% Issue: rebar/rebar3#140 (fix matching based on same path + order of
@@ -152,9 +150,9 @@ doterl_compile(Config, Dir, MoreSources, ErlOpts) ->
                          not lists:member(File, ErlFirstFiles) ],
 
     %% Make sure that ebin/ exists and is on the path
-    ok = filelib:ensure_dir(filename:join([Dir, "ebin", "dummy.beam"])),
+    ok = filelib:ensure_dir(filename:join(OutDir, "dummy.beam")),
     CurrPath = code:get_path(),
-    true = code:add_path(filename:absname(filename:join(Dir, "ebin"))),
+    true = code:add_path(filename:absname(OutDir)),
     OutDir1 = proplists:get_value(outdir, ErlOpts, OutDir),
     G = init_erlcinfo(Config, AllErlFiles),
     %% Split RestErls so that files which are depended on are treated
diff --git a/src/rebar_file_utils.erl b/src/rebar_file_utils.erl
index 8fe8965..ef2c70f 100644
--- a/src/rebar_file_utils.erl
+++ b/src/rebar_file_utils.erl
@@ -26,7 +26,8 @@
 %% -------------------------------------------------------------------
 -module(rebar_file_utils).
 
--export([rm_rf/1,
+-export([symlink_or_copy/2,
+         rm_rf/1,
          cp_r/2,
          mv/2,
          delete_each/1,
@@ -41,6 +42,22 @@
 %% Public API
 %% ===================================================================
 
+symlink_or_copy(Source, Target) ->
+    Link = case os:type() of
+               {win32, _} ->
+                   Source;
+               _ ->
+                   rebar_dir:make_relative_path(Source, Target)
+           end,
+    case file:make_symlink(Link, Target) of
+        ok ->
+            ok;
+        {error, eexist} ->
+            ok;
+        {error, _} ->
+            cp_r([Source], Target)
+    end.
+
 %% @doc Remove files and directories.
 %% Target is a single filename, directoryname or wildcard expression.
 -spec rm_rf(string()) -> 'ok'.
@@ -127,7 +144,7 @@ write_file_if_contents_differ(Filename, Bytes) ->
     end.
 
 %% returns an os appropriate tmpdir given a path
--spec system_tmpdir() -> file:filename(). 
+-spec system_tmpdir() -> file:filename().
 -spec system_tmpdir(PathComponents) -> file:filename() when
       PathComponents :: [file:name()].
 
diff --git a/src/rebar_otp_app.erl b/src/rebar_otp_app.erl
index 49579ae..278d7e5 100644
--- a/src/rebar_otp_app.erl
+++ b/src/rebar_otp_app.erl
@@ -40,18 +40,19 @@ compile(State, App) ->
     %% If we get an .app.src file, it needs to be pre-processed and
     %% written out as a ebin/*.app file. That resulting file will then
     %% be validated as usual.
-    Dir = ec_cnv:to_list(rebar_app_info:dir(App)),
     App1 = case rebar_app_info:app_file_src(App) of
                undefined ->
                    App;
                AppFileSrc ->
-                   File = preprocess(State, Dir, AppFileSrc),
+                   File = preprocess(State, App, AppFileSrc),
                    rebar_app_info:app_file(App, File)
            end,
 
     %% Load the app file and validate it.
     validate_app(State, App1).
 
+format_error(invalid_app_file) ->
+    "Failed to read app file";
 format_error({file_read, File, Reason}) ->
     io_lib:format("Failed to read ~s for processing: ~p", [File, Reason]);
 format_error({invalid_name, File, AppName}) ->
@@ -92,13 +93,14 @@ validate_app_modules(State, App, AppData) ->
             {ok, rebar_app_info:original_vsn(App, AppVsn)}
     end.
 
-preprocess(State, Dir, AppSrcFile) ->
+preprocess(State, AppInfo, AppSrcFile) ->
     case consult_app_file(AppSrcFile) of
         {ok, [{application, AppName, AppData}]} ->
             %% Look for a configuration file with vars we want to
             %% substitute. Note that we include the list of modules available in
             %% ebin/ and update the app data accordingly.
-            AppVars = load_app_vars(State) ++ [{modules, ebin_modules(Dir)}],
+            OutDir = rebar_app_info:out_dir(AppInfo),
+            AppVars = load_app_vars(State) ++ [{modules, ebin_modules(OutDir)}],
             A1 = apply_app_vars(AppVars, AppData),
 
             %% AppSrcFile may contain instructions for generating a vsn number
@@ -113,7 +115,9 @@ preprocess(State, Dir, AppSrcFile) ->
             Spec = io_lib:format("~p.\n", [{application, AppName, A3}]),
 
             %% Setup file .app filename and write new contents
-            AppFile = rebar_app_utils:app_src_to_app(AppSrcFile),
+            EbinDir = rebar_app_info:ebin_dir(AppInfo),
+            filelib:ensure_dir(filename:join(EbinDir, "dummy.beam")),
+            AppFile = rebar_app_utils:app_src_to_app(OutDir, AppSrcFile),
             ok = rebar_file_utils:write_file_if_contents_differ(AppFile, Spec),
 
             %% Make certain that the ebin/ directory is available
@@ -172,11 +176,16 @@ ensure_registered(AppData) ->
 %% config. However, in the case of *.app, rebar should not manipulate
 %% that file. This enforces that dichotomy between app and app.src.
 consult_app_file(Filename) ->
-    case lists:suffix(".app.src", Filename) of
+    case filelib:is_file(Filename) of
         false ->
-            file:consult(Filename);
+            throw(?PRV_ERROR(invalid_app_file));
         true ->
-            {ok, rebar_config:consult_file(Filename)}
+            case lists:suffix(".app.src", Filename) of
+                false ->
+                    file:consult(Filename);
+                true ->
+                    {ok, rebar_config:consult_file(Filename)}
+            end
     end.
 
 app_vsn(AppFile) ->
diff --git a/src/rebar_prv_clean.erl b/src/rebar_prv_clean.erl
index ccd126b..d670e4d 100644
--- a/src/rebar_prv_clean.erl
+++ b/src/rebar_prv_clean.erl
@@ -72,7 +72,7 @@ clean_apps(State, Apps) ->
                           ?INFO("Cleaning out ~s...", [rebar_app_info:name(AppInfo)]),
                           %% Legacy hook support
                           rebar_hooks:run_compile_hooks(AppDir, pre_hooks, clean, S),
-                          rebar_erlc_compiler:clean(State, ec_cnv:to_list(rebar_app_info:dir(AppInfo))),
+                          rebar_erlc_compiler:clean(State, rebar_app_info:out_dir(AppInfo)),
                           rebar_hooks:run_compile_hooks(AppDir, post_hooks, clean, S)
                   end, Apps).
 
diff --git a/src/rebar_prv_common_test.erl b/src/rebar_prv_common_test.erl
index b697d37..c3f9163 100644
--- a/src/rebar_prv_common_test.erl
+++ b/src/rebar_prv_common_test.erl
@@ -43,13 +43,14 @@ do(State) ->
     ?DEBUG("Compiling Common Test suites in: ~p", [OutDir]),
     lists:foreach(fun(App) ->
                       AppDir = rebar_app_info:dir(App),
+                      AppOutDir = rebar_app_info:out_dir(App),
                       C = rebar_config:consult(AppDir),
                       S = rebar_state:new(State, C, AppDir),
                       %% combine `erl_first_files` and `common_test_first_files` and
                       %% adjust compile opts to include `common_test_compile_opts`
                       %% and `{src_dirs, "test"}`
                       TestState = test_state(S, InDirs, OutDir),
-                      ok = rebar_erlc_compiler:compile(TestState, AppDir)
+                      ok = rebar_erlc_compiler:compile(TestState, AppDir, AppOutDir)
                   end, TestApps),
     ok = maybe_compile_extra_tests(TestApps, State, InDirs, OutDir),
     Path = code:get_path(),
@@ -342,7 +343,7 @@ maybe_compile_extra_tests(TestApps, State, InDirs, OutDir) ->
                        [{src_dirs, ["test"|InDirs]}] ++
                        lists:keydelete(src_dirs, 1, ErlOpts),
             TestState = first_files(rebar_state:set(State, erl_opts, TestOpts)),
-            rebar_erlc_compiler:compile(TestState, rebar_dir:get_cwd());
+            rebar_erlc_compiler:compile(TestState, rebar_dir:get_cwd(), rebar_dir:get_cwd());
         %% already compiled `./test` so do nothing
         _ -> ok
     end.
diff --git a/src/rebar_prv_compile.erl b/src/rebar_prv_compile.erl
index c4cca16..bce4aab 100644
--- a/src/rebar_prv_compile.erl
+++ b/src/rebar_prv_compile.erl
@@ -69,6 +69,10 @@ build_apps(State, Apps) ->
 
 build_app(State, AppInfo) ->
     AppDir = rebar_app_info:dir(AppInfo),
+    OutDir = rebar_app_info:out_dir(AppInfo),
+
+    copy_app_dirs(AppDir, OutDir),
+
     S = case rebar_app_info:state(AppInfo) of
             undefined ->
                 C = rebar_config:consult(AppDir),
@@ -81,12 +85,13 @@ build_app(State, AppInfo) ->
     rebar_hooks:run_compile_hooks(AppDir, pre_hooks, compile, S),
     AppInfo1 = compile(S, AppInfo),
     rebar_hooks:run_compile_hooks(AppDir, post_hooks, compile, S),
-    true = code:add_patha(filename:join(AppDir, "ebin")),
+
+    true = code:add_patha(rebar_app_info:ebin_dir(AppInfo1)),
     AppInfo1.
 
 compile(State, AppInfo) ->
     ?INFO("Compiling ~s", [rebar_app_info:name(AppInfo)]),
-    rebar_erlc_compiler:compile(State, ec_cnv:to_list(rebar_app_info:dir(AppInfo))),
+    rebar_erlc_compiler:compile(State, ec_cnv:to_list(rebar_app_info:dir(AppInfo)), ec_cnv:to_list(rebar_app_info:out_dir(AppInfo))),
     case rebar_otp_app:compile(State, AppInfo) of
         {ok, AppInfo1} ->
             AppInfo1;
@@ -94,7 +99,6 @@ compile(State, AppInfo) ->
             throw(Error)
     end.
 
-
 %% ===================================================================
 %% Internal functions
 %% ===================================================================
@@ -103,3 +107,29 @@ handle_args(State) ->
     {Args, _} = rebar_state:command_parsed_args(State),
     Jobs = proplists:get_value(jobs, Args, ?DEFAULT_JOBS),
     {ok, rebar_state:set(State, jobs, Jobs)}.
+
+copy_app_dirs(OldAppDir, AppDir) ->
+    case ec_cnv:to_binary(filename:absname(OldAppDir)) =/=
+        ec_cnv:to_binary(filename:absname(AppDir)) of
+        true ->
+            EbinDir = filename:join([OldAppDir, "ebin"]),
+            %% copy all files from ebin if it exists
+            case filelib:is_dir(EbinDir) of
+                true ->
+                    OutEbin = filename:join(AppDir, "ebin"),
+                    filelib:ensure_dir(filename:join(OutEbin, "dummy.beam")),
+                    rebar_file_utils:cp_r(filelib:wildcard(filename:join(EbinDir, "*")), OutEbin);
+                false ->
+                    ok
+            end,
+            filelib:ensure_dir(filename:join(AppDir, "dummy")),
+            %% link to src to be adjacent to ebin is needed for R15 use of cover/xref
+            [symlink_or_copy(OldAppDir, AppDir, Dir) || Dir <- ["priv", "include", "src", "test"]];
+        false ->
+            ok
+    end.
+
+symlink_or_copy(OldAppDir, AppDir, Dir) ->
+    Source = filename:join(OldAppDir, Dir),
+    Target = filename:join(AppDir, Dir),
+    rebar_file_utils:symlink_or_copy(Source, Target).
diff --git a/src/rebar_prv_eunit.erl b/src/rebar_prv_eunit.erl
index 13d00b9..cd1b0f8 100644
--- a/src/rebar_prv_eunit.erl
+++ b/src/rebar_prv_eunit.erl
@@ -42,13 +42,14 @@ do(State) ->
     ?DEBUG("Compiling EUnit instrumented modules in: ~p", [OutDir]),
     lists:foreach(fun(App) ->
                       AppDir = rebar_app_info:dir(App),
+                      AppOutDir = rebar_app_info:out_dir(App),
                       C = rebar_config:consult(AppDir),
                       S = rebar_state:new(State, C, AppDir),
                       %% combine `erl_first_files` and `eunit_first_files` and adjust
                       %% compile opts to include `eunit_compile_opts`, `{d, 'TEST'}`
                       %% and `{src_dirs, "test"}`
                       TestState = first_files(test_state(S, OutDir)),
-                      ok = rebar_erlc_compiler:compile(TestState, AppDir)
+                      ok = rebar_erlc_compiler:compile(TestState, AppDir, AppOutDir)
                   end, TestApps),
     ok = maybe_compile_extra_tests(TestApps, State, OutDir),
     Path = code:get_path(),
@@ -167,7 +168,7 @@ maybe_compile_extra_tests(TestApps, State, OutDir) ->
                        [{src_dirs, ["test"]}] ++
                        safe_define_test_macro(lists:keydelete(src_dirs, 1, ErlOpts)),
             TestState = first_files(rebar_state:set(State, erl_opts, TestOpts)),
-            rebar_erlc_compiler:compile(TestState, rebar_dir:get_cwd());
+            rebar_erlc_compiler:compile(TestState, rebar_dir:get_cwd(), rebar_dir:get_cwd());
         %% already compiled `./test` so do nothing
         _ -> ok
     end.
diff --git a/src/rebar_prv_install_deps.erl b/src/rebar_prv_install_deps.erl
index ab4cca1..f702936 100644
--- a/src/rebar_prv_install_deps.erl
+++ b/src/rebar_prv_install_deps.erl
@@ -374,7 +374,15 @@ maybe_fetch(AppInfo, Upgrade, Seen, State) ->
         false ->
             case rebar_app_discover:find_app(AppDir, all) of
                 false ->
-                    fetch_app(AppInfo, AppDir, State);
+                    case in_default(AppInfo, State) of
+                        false ->
+                            fetch_app(AppInfo, AppDir, State);
+                        {true, FoundApp} ->
+                            ?INFO("Linking ~s to ~s", [rebar_app_info:dir(FoundApp), AppDir]),
+                            filelib:ensure_dir(AppDir),
+                            rebar_file_utils:symlink_or_copy(rebar_app_info:dir(FoundApp), AppDir),
+                            true
+                    end;
                 {true, _} ->
                     case sets:is_element(rebar_app_info:name(AppInfo), Seen) of
                         true ->
@@ -392,6 +400,10 @@ in_checkouts(AppInfo) ->
         error -> false
     end.
 
+in_default(AppInfo, State) ->
+    Name = ec_cnv:to_list(rebar_app_info:name(AppInfo)),
+    DefaultAppDir = filename:join([rebar_state:get(State, base_dir), "default", "lib", Name]),
+    rebar_app_discover:find_app(DefaultAppDir, all).
 
 -spec parse_deps(binary(), list(), list(), list(), integer()) -> {[rebar_app_info:t()], [pkg_dep()]}.
 parse_deps(DepsDir, Deps, State, Locks, Level) ->
diff --git a/src/rebar_prv_xref.erl b/src/rebar_prv_xref.erl
index 49ae70e..142f8fd 100644
--- a/src/rebar_prv_xref.erl
+++ b/src/rebar_prv_xref.erl
@@ -102,7 +102,6 @@ prepare(State) ->
     %% Save the code path prior to doing any further code path
     %% manipulation
     OriginalPath = code:get_path(),
-    true = code:add_path(rebar_dir:ebin_dir()),
 
     %% Get list of xref checks we want to run
     ConfXrefChecks = rebar_state:get(State, xref_checks,
diff --git a/src/rebar_state.erl b/src/rebar_state.erl
index 2f8ab59..39e0e88 100644
--- a/src/rebar_state.erl
+++ b/src/rebar_state.erl
@@ -97,6 +97,7 @@ new(ParentState, Config, Dir) ->
                         D = proplists:get_value(deps, Config, []),
                         dict:from_list([{{deps, default}, D} | Config])
                 end,
+
     NewOpts = dict:merge(fun(_Key, Value1, _Value2) ->
                                  Value1
                          end, LocalOpts, Opts),
@@ -193,13 +194,14 @@ apply_profiles(State, [default]) ->
     State;
 apply_profiles(State=#state_t{opts=Opts, current_profiles=CurrentProfiles}, Profiles) ->
     ConfigProfiles = rebar_state:get(State, profiles, []),
-    NewOpts = lists:foldl(fun(default, OptsAcc) ->
-                                  OptsAcc;
-                             (Profile, OptsAcc) ->
-                                  ProfileOpts = dict:from_list(proplists:get_value(Profile, ConfigProfiles, [])),
-                                  merge_opts(Profile, ProfileOpts, OptsAcc)
-                          end, Opts, Profiles),
-    State#state_t{current_profiles=CurrentProfiles++Profiles, opts=NewOpts}.
+    {Profiles1, NewOpts} =
+        lists:foldl(fun(default, {ProfilesAcc, OptsAcc}) ->
+                            {ProfilesAcc, OptsAcc};
+                       (Profile, {ProfilesAcc, OptsAcc}) ->
+                            ProfileOpts = dict:from_list(proplists:get_value(Profile, ConfigProfiles, [])),
+                            {[Profile]++ProfilesAcc, merge_opts(Profile, ProfileOpts, OptsAcc)}
+                    end, {[], Opts}, Profiles),
+    State#state_t{current_profiles=CurrentProfiles++Profiles1, opts=NewOpts}.
 
 merge_opts(Profile, NewOpts, OldOpts) ->
     Opts = dict:merge(fun(_Key, NewValue, OldValue) when is_list(NewValue) ->
diff --git a/test/rebar_compile_SUITE.erl b/test/rebar_compile_SUITE.erl
index 9a21986..924ce5c 100644
--- a/test/rebar_compile_SUITE.erl
+++ b/test/rebar_compile_SUITE.erl
@@ -77,7 +77,7 @@ build_checkout_apps(Config) ->
 build_checkout_deps(Config) ->
     AppDir = ?config(apps, Config),
     CheckoutsDir = ?config(checkouts, Config),
-    DepsDir = filename:join([AppDir, "_build", "lib"]),
+    DepsDir = filename:join([AppDir, "_build", "default", "lib"]),
     Name1 = rebar_test_utils:create_random_name("checkapp1_"),
     Vsn1 = rebar_test_utils:create_random_vsn(),
     rebar_test_utils:create_app(filename:join([AppDir,Name1]), Name1, Vsn1, [kernel, stdlib]),
@@ -96,7 +96,6 @@ build_checkout_deps(Config) ->
 
 recompile_when_opts_change(Config) ->
     AppDir = ?config(apps, Config),
-    EbinDir = filename:join([AppDir, "ebin"]),
 
     Name = rebar_test_utils:create_random_name("app1_"),
     Vsn = rebar_test_utils:create_random_vsn(),
@@ -104,6 +103,7 @@ recompile_when_opts_change(Config) ->
 
     rebar_test_utils:run_and_check(Config, [], ["compile"], {ok, [{app, Name}]}),
 
+    EbinDir = filename:join([AppDir, "_build", "default", "lib", Name, "ebin"]),
     {ok, Files} = file:list_dir(EbinDir),
     ModTime = [filelib:last_modified(filename:join([EbinDir, F]))
                || F <- Files, filename:extension(F) == ".beam"],
@@ -123,7 +123,6 @@ recompile_when_opts_change(Config) ->
 
 dont_recompile_when_opts_dont_change(Config) ->
     AppDir = ?config(apps, Config),
-    EbinDir = filename:join([AppDir, "ebin"]),
 
     Name = rebar_test_utils:create_random_name("app1_"),
     Vsn = rebar_test_utils:create_random_vsn(),
@@ -131,6 +130,7 @@ dont_recompile_when_opts_dont_change(Config) ->
 
     rebar_test_utils:run_and_check(Config, [], ["compile"], {ok, [{app, Name}]}),
 
+    EbinDir = filename:join([AppDir, "_build", "default", "lib", Name, "ebin"]),
     {ok, Files} = file:list_dir(EbinDir),
     ModTime = [filelib:last_modified(filename:join([EbinDir, F]))
                || F <- Files, filename:extension(F) == ".beam"],
@@ -141,20 +141,20 @@ dont_recompile_when_opts_dont_change(Config) ->
 
     {ok, NewFiles} = file:list_dir(EbinDir),
     NewModTime = [filelib:last_modified(filename:join([EbinDir, F]))
-                  || F <- NewFiles, filename:extension(F) == ".beam"], 
+                  || F <- NewFiles, filename:extension(F) == ".beam"],
 
     ?assert(ModTime == NewModTime).
 
 dont_recompile_yrl_or_xrl(Config) ->
     AppDir = ?config(apps, Config),
-    
+
     Name = rebar_test_utils:create_random_name("app1_"),
     Vsn = rebar_test_utils:create_random_vsn(),
     rebar_test_utils:create_app(AppDir, Name, Vsn, [kernel, stdlib]),
 
     Xrl = filename:join([AppDir, "src", "not_a_real_xrl_" ++ Name ++ ".xrl"]),
     ok = filelib:ensure_dir(Xrl),
-    XrlBody = 
+    XrlBody =
         "Definitions."
         "\n\n"
         "D = [0-9]"
@@ -182,4 +182,4 @@ dont_recompile_yrl_or_xrl(Config) ->
 
     NewModTime = filelib:last_modified(XrlBeam),
 
-    ?assert(ModTime == NewModTime).
\ No newline at end of file
+    ?assert(ModTime == NewModTime).
diff --git a/test/rebar_test_utils.erl b/test/rebar_test_utils.erl
index a036619..157c2df 100644
--- a/test/rebar_test_utils.erl
+++ b/test/rebar_test_utils.erl
@@ -142,17 +142,18 @@ top_level_deps([{{Name, Vsn, Ref}, _} | Deps]) ->
 %%% Helpers %%%
 %%%%%%%%%%%%%%%
 check_results(AppDir, Expected) ->
-    BuildDir = filename:join([AppDir, "_build", "lib"]),
+    BuildDirs = filelib:wildcard(filename:join([AppDir, "_build", "*", "lib"])),
     CheckoutsDir = filename:join([AppDir, "_checkouts"]),
     LockFile = filename:join([AppDir, "rebar.lock"]),
     Locks = lists:flatten(rebar_config:consult_file(LockFile)),
-    Apps = rebar_app_discover:find_apps([AppDir]),
-    InvalidApps = rebar_app_discover:find_apps([AppDir], invalid),
-    ValidApps = rebar_app_discover:find_apps([AppDir], valid),
-    AppsNames = [{ec_cnv:to_list(rebar_app_info:name(App)), App} || App <- Apps],
-    InvalidAppsNames = [{ec_cnv:to_list(rebar_app_info:name(App)), App} || App <- InvalidApps],
-    ValidAppsNames = [{ec_cnv:to_list(rebar_app_info:name(App)), App} || App <- ValidApps],
-    Deps = rebar_app_discover:find_apps([BuildDir], all),
+
+    InvalidApps = rebar_app_discover:find_apps(BuildDirs, invalid),
+    ValidApps = rebar_app_discover:find_apps(BuildDirs, valid),
+
+    InvalidDepsNames = [{ec_cnv:to_list(rebar_app_info:name(App)), App} || App <- InvalidApps],
+    ValidDepsNames = [{ec_cnv:to_list(rebar_app_info:name(App)), App} || App <- ValidApps],
+
+    Deps = rebar_app_discover:find_apps(BuildDirs, all),
     DepsNames = [{ec_cnv:to_list(rebar_app_info:name(App)), App} || App <- Deps],
     Checkouts = rebar_app_discover:find_apps([CheckoutsDir], all),
     CheckoutsNames = [{ec_cnv:to_list(rebar_app_info:name(App)), App} || App <- Checkouts],
@@ -160,7 +161,7 @@ check_results(AppDir, Expected) ->
     lists:foreach(
         fun({app, Name}) ->
                 ct:pal("Name: ~p", [Name]),
-                case lists:keyfind(Name, 1, AppsNames) of
+                case lists:keyfind(Name, 1, DepsNames) of
                     false ->
                         error({app_not_found, Name});
                     {Name, _App} ->
@@ -168,7 +169,7 @@ check_results(AppDir, Expected) ->
                 end
         ; ({app, Name, invalid}) ->
                 ct:pal("Name: ~p", [Name]),
-                case lists:keyfind(Name, 1, InvalidAppsNames) of
+                case lists:keyfind(Name, 1, InvalidDepsNames) of
                     false ->
                         error({app_not_found, Name});
                     {Name, _App} ->
@@ -176,7 +177,7 @@ check_results(AppDir, Expected) ->
                 end
         ; ({app, Name, valid}) ->
                 ct:pal("Name: ~p", [Name]),
-                case lists:keyfind(Name, 1, ValidAppsNames) of
+                case lists:keyfind(Name, 1, ValidDepsNames) of
                     false ->
                         error({app_not_found, Name});
                     {Name, _App} ->
@@ -217,7 +218,7 @@ check_results(AppDir, Expected) ->
                 {ok, Cwd} = file:get_cwd(),
                 try
                     file:set_cwd(AppDir),
-                    ReleaseDir = filename:join([AppDir, "_build", "rel"]),
+                    [ReleaseDir] = filelib:wildcard(filename:join([AppDir, "_build", "*", "rel"])),
                     RelxState = rlx_state:new("", [], []),
                     RelxState1 = rlx_state:base_output_dir(RelxState, ReleaseDir),
                     {ok, RelxState2} = rlx_prv_app_discover:do(RelxState1),
diff --git a/test/rebar_xref_SUITE.erl b/test/rebar_xref_SUITE.erl
index 067be07..1b1d6d7 100644
--- a/test/rebar_xref_SUITE.erl
+++ b/test/rebar_xref_SUITE.erl
@@ -57,8 +57,9 @@ end_per_testcase(_, Config) ->
     %% we are about to remove the directory and there may be
     %% subsequent test cases that error out when the code path tries
     %% to include one of these soon-to-be nonexistent directories.
-    code:del_path(AppDir ++ "/."),
-    true = code:del_path(rebar_dir:ebin_dir()),
+    Name = ?config(app_name, Config),
+    EbinDir = filename:join([AppDir, "_build", "default" "lib", Name, "ebin"]),
+    true = code:del_path(EbinDir),
     file:set_cwd(OrigDir),
     ec_file:remove(AppDir, [recursive]),
     ok.