diff --git a/.gitignore b/.gitignore
index 7699760..2e99a93 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,3 +5,9 @@
 ebin/
 priv/easton_index
 
+.idea
+_build
+idx
+*.d
+*.lock
+.DS_Store
diff --git a/rebar.config b/rebar.config
index de99f76..5a765ad 100644
--- a/rebar.config
+++ b/rebar.config
@@ -1,4 +1,3 @@
-
 {port_specs, [
     {"priv/easton_index", [
         "c_src/easton_index/*.cc"
@@ -9,13 +8,20 @@
     {"CXXFLAGS", "$CXXFLAGS -std=c++0x -g -Wall -Werror"},
     {"EXE_LDFLAGS",
         "$EXE_LDFLAGS -lCsMap -lspatialindex -lspatialindex_c -lgeos -lgeos_c -lleveldb"},
-    {"EXE_LINK_TEMPLATE",
-          "$CXX $PORT_IN_FILES $LDFLAGS $EXE_LDFLAGS -o $PORT_OUT_FILE"},
-    {"darwin", "EXE_CFLAGS",  "$EXE_CFLAGS -I/usr/local/include"},
+    {"EXE_LINK_TEMPLATE", "$CXX $PORT_IN_FILES $LDFLAGS $EXE_LDFLAGS -o $PORT_OUT_FILE"},
+    {"darwin", "EXE_CFLAGS", "$EXE_CFLAGS -I/usr/local/include"},
     {"darwin", "EXE_LDFLAGS", "$EXE_LDFLAGS -L/usr/local/lib"}
 ]}.
 
-{eunit_opts, [
-    verbose
-]}.
+{eunit_opts, [verbose]}.
 
+{plugins, [{pc, "~> 1.0"}]}.
+{artifacts, [
+    "priv/easton_index"
+]}.
+{provider_hooks, [
+    {post, [
+        {compile, {pc, compile}},
+        {clean, {pc, clean}}
+    ]}
+]}.
diff --git a/test/easton_05_search_tests.erl b/test/easton_05_search_tests.erl
index 3fe093d..c7c5260 100644
--- a/test/easton_05_search_tests.erl
+++ b/test/easton_05_search_tests.erl
@@ -285,8 +285,8 @@ gen_point(inner) ->
     % Inner square is easy square. The
     % slightly-less than 1 and 2 numbers
     % are to avoid edge effects for queries.
-    X = 1.999 * random:uniform() - 0.999,
-    Y = 1.999 * random:uniform() - 0.999,
+    X = 1.999 * rand:uniform() - 0.999,
+    Y = 1.999 * rand:uniform() - 0.999,
     {X, Y};
 gen_point(outer) ->
     % Outer square is harder square.
@@ -294,9 +294,9 @@ gen_point(outer) ->
     % in a unit square and then transposing it
     % randomly to one of the twelve possible unit
     % squares that make up the outer ring.
-    X = random:uniform(),
-    Y = random:uniform(),
-    S = random:uniform(12),
+    X = rand:uniform(),
+    Y = rand:uniform(),
+    S = rand:uniform(12),
     % This numbering starts in the top left
     % and runs clockwise.
     {OffX, OffY} = case S of
diff --git a/test/easton_06_temporal_tests.erl b/test/easton_06_temporal_tests.erl
index b87f918..2f312d0 100644
--- a/test/easton_06_temporal_tests.erl
+++ b/test/easton_06_temporal_tests.erl
@@ -84,7 +84,7 @@ moving_shape_test(Idx) ->
     NumShapes = length(Triples),
     ?assertEqual({ok, NumShapes}, easton_index:doc_count(Idx)),
 
-    lists:foreach(fun({Name, Shape, MovingShape}) ->
+    lists:foreach(fun({Name, _Shape, _MovingShape}) ->
         ?assertEqual(ok, easton_index:remove(Idx, Name))
     end, Triples),
 
diff --git a/test/easton_07_mvr_tests.erl b/test/easton_07_mvr_tests.erl
index 415ce31..e2ef2b7 100644
--- a/test/easton_07_mvr_tests.erl
+++ b/test/easton_07_mvr_tests.erl
@@ -86,7 +86,7 @@ historical_shape_test(Idx) ->
     NumShapes = length(Triples),
     ?assertEqual({ok, NumShapes}, easton_index:doc_count(Idx)),
 
-    lists:foreach(fun({Name, Shape, HistoricalShape}) ->
+    lists:foreach(fun({Name, _Shape, _HistoricalShape}) ->
         ?assertEqual(ok, easton_index:remove(Idx, Name))
     end, Triples),