1 files changed, 43 insertions, 0 deletions
diff --git a/src/rebar_prv_lock.erl b/src/rebar_prv_lock.erl
new file mode 100644
index 0000000..6aaf7ac
--- /dev/null
+++ b/src/rebar_prv_lock.erl
@@ -0,0 +1,43 @@
+-module(rebar_prv_lock).
+
+-behaviour(rebar_provider).
+
+-export([init/1,
+         do/1]).
+
+-include("rebar.hrl").
+
+-define(PROVIDER, lock).
+-define(DEPS, [install_deps]).
+
+%% ===================================================================
+%% Public API
+%% ===================================================================
+
+-spec init(rebar_state:t()) -> {ok, rebar_state:t()}.
+init(State) ->
+    State1 = rebar_state:add_provider(State, #provider{name = ?PROVIDER,
+                                                       provider_impl = ?MODULE,
+                                                       bare = false,
+                                                       deps = ?DEPS,
+                                                       example = "",
+                                                       short_desc = "Locks dependencies",
+                                                       desc = info("Locks dependencies"),
+                                                       opts = []}),
+    {ok, State1}.
+
+-spec do(rebar_state:t()) -> {ok, rebar_state:t()}.
+do(State) ->
+    AllDeps = rebar_state:get(State, all_deps, []),
+    Locks = lists:map(fun(Dep) ->
+                              Dir = rebar_app_info:dir(Dep),
+                              {rebar_app_info:name(Dep)
+                              ,rebar_app_info:original_vsn(Dep)
+                              ,rebar_fetch:lock_source(Dir, rebar_app_info:source(Dep))}
+                      end, AllDeps),
+    Dir = rebar_state:dir(State),
+    file:write_file(filename:join(Dir, "rebar.lock"), io_lib:format("~p.~n", [Locks])),
+    {ok, rebar_state:set(State, locks, Locks)}.
+
+info(_) ->
+    "".