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+%% -*- mode: Erlang; fill-column: 80; comment-column: 75; -*-
+%% Example Relcool Config
+%% ======================
+%%
+%% This is an example relcool config whose purpose is to demonstrate all of the
+%% options available in relcool. Its not expected that you will use all of the
+%% things here. In fact, there is a high likely hood that *your* relcool.config
+%% will be extremely minimal, as relcool does a very good job of figuring out
+%% things on its own.
+%%
+%% The Release We Are Building
+%% ---------------------------
+%%
+%% Lets say we have a release called sexpr. The sexpr release supports versions
+%% 0.0.1 and 0.0.2 with different dependencies. 0.0.1 requires erlware commons
+%% 0.8.0 or lesser. 0.0.2 requires erlware_commons 0.8.1 or greater along with
+%% neotoma (any version). We also do not want neotoma to be loaded. We also want
+%% our default release. the one we build in the common case to be sexper 0.0.2.
+
+%% You can tell relcool about additional directories that you want searched for
+%% otp apps during the discovery process. You do that in the 'paths' config. You
+%% can also specify these paths on the command line with `-p`. Be aware that
+%% relcool plays well with rebar so if you have a deps directory in the current
+%% directory it will be automatically added.
+{paths, ["/opt/erlang_apps"]}.
+
+%% If needed you can use a specific vm.args file instead of the
+%% one automatically generated by relx.
+{vm_args, "./config/vm.args"}.
+
+%% If you have a sys.config file you need to tell relcool where it is. If you do
+%% that relcool will include the sys.config in the appropriate place
+%% automatically.
+{sys_config, "./config/sys.config"}.
+
+%% relcool will include erts by default. However, if you don't want to include
+%% erts you can add the `include_erts` tuple to the config and tell relcool not
+%% to include it.
+{include_erts, false}.
+
+%% The default start script relcool creates is basic. For a more complete start
+%% script add the extended_start_script option.
+{extended_start_script, true}.
+
+%% When we have multiple releases relcool needs to know which one to build. You
+%% can specify that on the command line with the `-n` and `-v` arguments to
+%% relcool. However, it is often more convenient to do it in the config.
+{default_release, sexpr, "0.0.2"}.
+
+{release, {sexpr, "0.0.1"},
+ [sexpr,
+  %% There are two syntaxes for constraints.
+  %% The first is the tuple syntax shown here.
+  {erlware_commons, "0.8.0", '<='}]}.
+
+{release, {sexpr, "0.0.2"},
+ [sexpr,
+
+  %% This is the second constraint syntax, it is interchangeable with the tuple
+  %% syntax and its up to you which you find more readable/usable.
+  "erlware_commons>=0.8.1",
+
+  %% You can put the release load types in the release spec here in exactly the
+  %% same way that you can do it for a normal relfile. The syntax is
+  %% {<constraint>, <type>}.
+  {neotoma, load}]}.
+
+%% During development its often the case that you want to substitute the app
+%% that you are working on for a 'production' version of an app. You can
+%% explicitly tell relcool to override all versions of an app that you specify
+%% with an app in an arbitrary directory. Relcool will then symlink that app
+%% into the release in place of the specified app. be aware though that relcool
+%% will check your app for consistancy so it should be a normal OTP app and
+%% already be built.
+{overrides, [{sexpr, "../sexpr"}]}.
+
+
+%% In some cases you might want to add additional functionality to relcool. You
+%% can do this via a 'provider'. A provider is an implementation of the relcool
+%% provider behaviour. This probably shouldn't be needed very often.
+{add_providers, [my_custom_functionality]}.