output checkouts compilation to _build/<profile>/checkouts/

rebar.config.sample

@@ -122,6 +122,8 @@
 {root_dir, "."}.
 %% where checkout dependencies are to be located
 {checkouts_dir, "_checkouts"}.
+%% where, under <base_dir>/<profile> checkout dependencies are to be built
+{checkouts_out_dir, "checkouts"}.
 %% directory in '<base_dir>/<profile>/' where plugins go
 {plugins_dir, "plugins"}.
 %% directories where OTP applications for the project can be located

src/rebar.hrl

@@ -18,6 +18,7 @@
 -define(DEFAULT_ROOT_DIR, ".").
 -define(DEFAULT_PROJECT_APP_DIRS, ["apps/*", "lib/*", "."]).
 -define(DEFAULT_CHECKOUTS_DIR, "_checkouts").
+-define(DEFAULT_CHECKOUTS_OUT_DIR, "checkouts").
 -define(DEFAULT_DEPS_DIR, "lib").
 -define(DEFAULT_PLUGINS_DIR, "plugins").
 -define(DEFAULT_TEST_DEPS_DIR, "test/lib").

src/rebar_app_utils.erl

@@ -255,7 +255,10 @@ dep_to_app(Parent, DepsDir, Name, Vsn, Source, IsLock, State) ->
     CheckoutsDir = rebar_utils:to_list(rebar_dir:checkouts_dir(State, Name)),
     AppInfo = case rebar_app_info:discover(CheckoutsDir) of
                   {ok, App} ->
-                      rebar_app_info:source(rebar_app_info:is_checkout(App, true), checkout);
+                      OutDir = filename:join(rebar_dir:checkouts_out_dir(State), Name),
+                      rebar_app_info:out_dir(
+                        rebar_app_info:source(
+                          rebar_app_info:is_checkout(App, true), checkout), OutDir);
                   not_found ->
                       Dir = rebar_utils:to_list(filename:join(DepsDir, Name)),
                       {ok, AppInfo0} =

src/rebar_dir.erl

@@ -9,6 +9,8 @@
          root_dir/1,
          checkouts_dir/1,
          checkouts_dir/2,
+         checkouts_out_dir/1,
+         checkouts_out_dir/2,
          plugins_dir/1,
          lib_dirs/1,
          home_dir/0,
@@ -97,6 +99,17 @@ checkouts_dir(State) ->
 checkouts_dir(State, App) ->
     filename:join(checkouts_dir(State), App).
 
+%% @doc returns the location of the directory checkouts are built to
+-spec checkouts_out_dir(rebar_state:t()) -> file:filename_all().
+checkouts_out_dir(State) ->
+    filename:join(base_dir(State), rebar_state:get(State, checkouts_out_dir, ?DEFAULT_CHECKOUTS_OUT_DIR)).
+
+%% @doc returns the expected location of a given app in the checkouts
+%% directory for the project.
+-spec checkouts_out_dir(rebar_state:t(), file:filename_all()) -> file:filename_all().
+checkouts_out_dir(State, App) ->
+    filename:join(checkouts_out_dir(State), App).
+
 %% @doc Returns the directory where plugins are located.
 -spec plugins_dir(rebar_state:t()) -> file:filename_all().
 plugins_dir(State) ->

src/rebar_env.erl

@@ -12,6 +12,7 @@
 %% REBAR_BUILD_DIR         = rebar_dir:base_dir/1
 %% REBAR_ROOT_DIR          = rebar_dir:root_dir/1
 %% REBAR_CHECKOUTS_DIR     = rebar_dir:checkouts_dir/1
+%% REBAR_CHECKOUTS_OUT_DIR = rebar_dir:checkouts_out_dir/1
 %% REBAR_PLUGINS_DIR       = rebar_dir:plugins_dir/1
 %% REBAR_GLOBAL_CONFIG_DIR = rebar_dir:global_config_dir/1
 %% REBAR_GLOBAL_CACHE_DIR  = rebar_dir:global_cache_dir/1
@@ -42,6 +43,7 @@ create_env(State, Opts) ->
         {"REBAR_BUILD_DIR",         filename:absname(rebar_dir:base_dir(State))},
         {"REBAR_ROOT_DIR",          filename:absname(rebar_dir:root_dir(State))},
         {"REBAR_CHECKOUTS_DIR",     filename:absname(rebar_dir:checkouts_dir(State))},
+        {"REBAR_CHECKOUTS_OUT_DIR", filename:absname(rebar_dir:checkouts_out_dir(State))},
         {"REBAR_PLUGINS_DIR",       filename:absname(rebar_dir:plugins_dir(State))},
         {"REBAR_GLOBAL_CONFIG_DIR", filename:absname(rebar_dir:global_config_dir(State))},
         {"REBAR_GLOBAL_CACHE_DIR",  filename:absname(rebar_dir:global_cache_dir(Opts))},

src/rebar_prv_plugins.erl

@@ -44,6 +44,10 @@ do(State) ->
     Plugins = rebar_state:get(State, plugins, []),
     ProjectPlugins = rebar_state:get(State, project_plugins, []),
     PluginsDirs = filelib:wildcard(filename:join(rebar_dir:plugins_dir(State), "*")),
+
+    %% use `checkouts_dir' and not `checkouts_out_dir'. Since we use `all' in `find_apps'
+    %% so it doesn't need to be built and the apps in `checkouts_dir' could be old
+    %% because the user removing from `_checkouts/' doesn't cause removal of the output
     CheckoutsDirs = filelib:wildcard(filename:join(rebar_dir:checkouts_dir(State), "*")),
     Apps = rebar_app_discover:find_apps(CheckoutsDirs++PluginsDirs, SrcDirs, all, State),
     display_plugins("Local plugins", Apps, Plugins ++ ProjectPlugins),

test/rebar_compile_SUITE.erl

@@ -48,7 +48,7 @@ all() ->
 groups() ->
     [{basic_app, [], [build_basic_app, paths_basic_app, clean_basic_app]},
      {release_apps, [], [build_release_apps, paths_release_apps, clean_release_apps]},
-     {checkout_apps, [], [build_checkout_apps, paths_checkout_apps]},
+     {checkout_apps, [], [paths_checkout_apps]},
      {checkout_deps, [], [build_checkout_deps, paths_checkout_deps]},
      {basic_srcdirs, [], [build_basic_srcdirs, paths_basic_srcdirs]},
      {release_srcdirs, [], [build_release_srcdirs,
@@ -264,13 +264,6 @@ build_release_apps(Config) ->
         {ok, [{app, Name1}, {app, Name2}]}
     ).
 
-build_checkout_apps(Config) ->
-    [Name1, Name2] = ?config(app_names, Config),
-    rebar_test_utils:run_and_check(
-        Config, [], ["compile"],
-        {ok, [{app, Name1}, {checkout, Name2}]}
-    ).
-
 build_checkout_deps(Config) ->
     AppDir = ?config(apps, Config),
     [Name1, Name2] = ?config(app_names, Config),

test/rebar_test_utils.erl

@@ -248,7 +248,7 @@ check_results(AppDir, Expected, ProfileRun) ->
     BuildDirs = filelib:wildcard(filename:join([AppDir, "_build", ProfileRun, "lib", "*"])),
     PluginDirs = filelib:wildcard(filename:join([AppDir, "_build", ProfileRun, "plugins", "*"])),
     GlobalPluginDirs = filelib:wildcard(filename:join([AppDir, "global", "plugins", "*"])),
-    CheckoutsDirs = filelib:wildcard(filename:join([AppDir, "_checkouts", "*"])),
+    CheckoutsDirs = filelib:wildcard(filename:join([AppDir, "_build", ProfileRun, "checkouts", "*"])),
     LockFile = filename:join([AppDir, "rebar.lock"]),
     Locks = lists:flatten(rebar_config:consult_lock_file(LockFile)),