diff --git a/csharp/BUCK b/csharp/BUCK
index d29f35a3..e679803a 100644
--- a/csharp/BUCK
+++ b/csharp/BUCK
@@ -3,7 +3,14 @@
 # This source code is licensed under the MIT license found in the
 # LICENSE file in the root directory of this source tree.
 
-load("//:yoga_defs.bzl", "BASE_COMPILER_FLAGS", "is_apple_platform", "yoga_cxx_library", "yoga_dep")
+load(
+    "//:yoga_defs.bzl",
+    "BASE_COMPILER_FLAGS",
+    "is_apple_platform",
+    "yoga_cxx_library",
+    "yoga_dep",
+    "yoga_apple_binary",
+)
 
 COMPILER_FLAGS = BASE_COMPILER_FLAGS + ["-std=c++11"]
 
@@ -32,41 +39,4 @@ yoga_cxx_library(
     deps = [yoga_dep(":yoga")],
 )
 
-if is_apple_platform():
-    yoganet_ios_srcs = []
-    for arch in [
-        "iphonesimulator-x86_64",
-        "iphoneos-arm64",
-    ]:
-        name = "yoganet-" + arch
-        yoganet_ios_srcs.append(":" + name)
-        genrule(
-            name = name,
-            srcs = [
-                yoga_dep(":yogaApple#%s,static" % arch),
-                yoga_dep("YogaKit:YogaKitApple#%s,static" % arch),
-                yoga_dep("csharp:yoganetApple#%s,static" % arch),
-            ],
-            out = "libyoga-%s.a" % arch,
-            cmd = "libtool -static -o $OUT $SRCS",
-            visibility = [yoga_dep("csharp:yoganet-ios")],
-        )
-
-    genrule(
-        name = "yoganet-ios",
-        srcs = yoganet_ios_srcs,
-        out = "libyoga.a",
-        cmd = "lipo $SRCS -create -output $OUT",
-        visibility = ["PUBLIC"],
-    )
-
-    yoganet_macosx_target = "csharp:yoganetAppleMac#macosx-%s,dynamic"
-    genrule(
-        name = "yoganet-macosx",
-        srcs = [
-            yoga_dep(yoganet_macosx_target % "x86_64"),
-        ],
-        out = "libyoga.dylib",
-        cmd = "lipo $SRCS -create -output $OUT",
-        visibility = ["PUBLIC"],
-    )
+yoga_apple_binary()
diff --git a/yoga_defs.bzl b/yoga_defs.bzl
index 9f33a825..1a574c04 100644
--- a/yoga_defs.bzl
+++ b/yoga_defs.bzl
@@ -190,3 +190,43 @@ def yoga_prebuilt_jar(*args, **kwargs):
 
 def is_apple_platform():
     return True
+
+def yoga_apple_binary():
+    if is_apple_platform():
+        yoganet_ios_srcs = []
+        for arch in [
+            "iphonesimulator-x86_64",
+            "iphoneos-arm64",
+        ]:
+            name = "yoganet-" + arch
+            yoganet_ios_srcs.append(":" + name)
+            native.genrule(
+                name = name,
+                srcs = [
+                    yoga_dep(":yogaApple#%s,static" % arch),
+                    yoga_dep("YogaKit:YogaKitApple#%s,static" % arch),
+                    yoga_dep("csharp:yoganetApple#%s,static" % arch),
+                ],
+                out = "libyoga-%s.a" % arch,
+                cmd = "libtool -static -o $OUT $SRCS",
+                visibility = [yoga_dep("csharp:yoganet-ios")],
+            )
+
+        native.genrule(
+            name = "yoganet-ios",
+            srcs = yoganet_ios_srcs,
+            out = "libyoga.a",
+            cmd = "lipo $SRCS -create -output $OUT",
+            visibility = ["PUBLIC"],
+        )
+
+        yoganet_macosx_target = "csharp:yoganetAppleMac#macosx-%s,dynamic"
+        native.genrule(
+            name = "yoganet-macosx",
+            srcs = [
+                yoga_dep(yoganet_macosx_target % "x86_64"),
+            ],
+            out = "libyoga.dylib",
+            cmd = "lipo $SRCS -create -output $OUT",
+            visibility = ["PUBLIC"],
+        )