Spring works.

Change-Id: I370012cc80e9019467100bec631c488c10a73141
diff --git a/frc971/zeroing/BUILD b/frc971/zeroing/BUILD
index 5271cc2..96315c7 100644
--- a/frc971/zeroing/BUILD
+++ b/frc971/zeroing/BUILD
@@ -1,73 +1,75 @@
-package(default_visibility = ['//visibility:public'])
+package(default_visibility = ["//visibility:public"])
 
-load('//aos/build:queues.bzl', 'queue_library')
+load("//aos/build:queues.bzl", "queue_library")
+load("//tools:environments.bzl", "mcu_cpus")
 
 cc_library(
-  name = 'averager',
-  hdrs = [
-    'averager.h',
-  ],
+    name = "averager",
+    hdrs = [
+        "averager.h",
+    ],
 )
 
 cc_test(
-  name = 'averager_test',
-  srcs = [
-    'averager_test.cc',
-  ],
-  deps = [
-    ':averager',
-    '//aos/testing:googletest',
-  ],
+    name = "averager_test",
+    srcs = [
+        "averager_test.cc",
+    ],
+    deps = [
+        ":averager",
+        "//aos/testing:googletest",
+    ],
 )
 
 cc_library(
-  name = 'zeroing',
-  srcs = [
-    'zeroing.cc',
-  ],
-  hdrs = [
-    'zeroing.h',
-  ],
-  deps = [
-    ':wrap',
-    '//frc971/control_loops:queues',
-    '//frc971:constants',
-  ],
+    name = "zeroing",
+    srcs = [
+        "zeroing.cc",
+    ],
+    hdrs = [
+        "zeroing.h",
+    ],
+    deps = [
+        ":wrap",
+        "//frc971:constants",
+        "//frc971/control_loops:queues",
+    ],
 )
 
 cc_test(
-  name = 'zeroing_test',
-  srcs = [
-    'zeroing_test.cc',
-  ],
-  deps = [
-    '//aos/testing:googletest',
-    '//aos/testing:test_shm',
-    ':zeroing',
-    '//aos/common/util:thread',
-    '//aos/common:die',
-    '//frc971/control_loops:position_sensor_sim',
-    '//frc971/control_loops:queues',
-  ],
+    name = "zeroing_test",
+    srcs = [
+        "zeroing_test.cc",
+    ],
+    deps = [
+        ":zeroing",
+        "//aos/common:die",
+        "//aos/common/util:thread",
+        "//aos/testing:googletest",
+        "//aos/testing:test_shm",
+        "//frc971/control_loops:position_sensor_sim",
+        "//frc971/control_loops:queues",
+    ],
 )
 
 cc_library(
-  name = 'wrap',
-  srcs = [
-    'wrap.cc',
-  ],
-  hdrs = [
-    'wrap.h',
-  ],
+    name = "wrap",
+    srcs = [
+        "wrap.cc",
+    ],
+    hdrs = [
+        "wrap.h",
+    ],
+    compatible_with = mcu_cpus,
 )
 
 cc_test(
-  name = 'wrap_test',
-  srcs = [
-    'wrap_test.cc',
-  ],
-  deps = [
-    '//aos/testing:googletest',
-    ':wrap',
-  ],
+    name = "wrap_test",
+    srcs = [
+        "wrap_test.cc",
+    ],
+    deps = [
+        ":wrap",
+        "//aos/testing:googletest",
+    ],
 )