Selects

java/example/simple/BUILD.bazel

@@ -2,12 +2,23 @@ load("//rules:simple_java_library.bzl", "simple_java_library")
 
 simple_java_library(
     name = "simple",
-    src = "Simple.java",
-    deps = [":simple_dep"],
+    src = select({
+        "@platforms//os:linux": "SimpleLinux.java",
+        "//conditions:default": "Simple.java",
+    }),
+    deps = select({
+        "@platforms//os:linux": [":simple_dep_linux"],
+        "//conditions:default": [":simple_dep"],
+    }),
     visibility = ["//visibility:public"],
 )
 
 simple_java_library(
     name = "simple_dep",
     src = "Dep.java",
 )
+
+simple_java_library(
+    name = "simple_dep_linux",
+    src = "LinuxDep.java",
+)

java/example/simple/LinuxDep.java

@@ -0,0 +1,5 @@
+package example.simple;
+
+public class LinuxDep {
+  public static final String NAME = "LinuxDep";
+}

java/example/simple/SimpleLinux.java

@@ -0,0 +1,7 @@
+package example.simple;
+
+public class SimpleLinux {
+  public static String description() {
+    return String.format("I am a simple class named SimpleLinux, and I know about %s", LinuxDep.NAME);
+  }
+}