CHANGELOG.md

+# [1.0.0-beta.9](https://git.gitlab.arm.com/bazel/ape/compare/v1.0.0-beta.8...v1.0.0-beta.9) (2024-06-17)
+
+### Bug Fixes
+
+- **assimilate:** symlink on Windows ([21c70a3](https://git.gitlab.arm.com/bazel/ape/commit/21c70a35358847fb6452f1b086d5ae208b0f9b33))
+- **assimilate:** use ELF on Apple Silicon ([85084d3](https://git.gitlab.arm.com/bazel/ape/commit/85084d326695d94c033e9458ebad84cabb83455d))
+
 # [1.0.0-beta.8](https://git.gitlab.arm.com/bazel/ape/compare/v1.0.0-beta.7...v1.0.0-beta.8) (2024-06-17)
 
 ### Bug Fixes

MODULE.bazel

 module(
     name = "ape",
-    version = "1.0.0-beta.8",
+    version = "1.0.0-beta.9",
     bazel_compatibility = [
         ">=7.0.0",
     ],

ape/assimilate/rule.bzl

@@ -40,23 +40,41 @@ ATTRS = {
 
 def implementation(ctx):
     windows = ctx.attr._windows[platform_common.ConstraintValueInfo]
-    macos = ctx.attr._macos[platform_common.ConstraintValueInfo]
-    arm64 = ctx.attr._arm64[platform_common.ConstraintValueInfo]
-    amd64 = ctx.attr._amd64[platform_common.ConstraintValueInfo]
 
     basename = ctx.attr.basename or ctx.label.name
 
+    executable = ctx.actions.declare_file("{}.ape/{}".format(ctx.label.name, basename))
+
+    if ctx.target_platform_has_constraint(windows):
+        _symlink(ctx, executable)
+    else:
+        _assimilate(ctx, executable)
+
+    files = depset([executable])
+
+    runfiles = ctx.runfiles([executable])
+
+    return DefaultInfo(
+        executable = executable,
+        files = files,
+        runfiles = runfiles,
+    )
+
+def _assimilate(ctx, executable):
     ape = ctx.toolchains["//ape/toolchain/ape:type"]
 
-    executable = ctx.actions.declare_file("{}.ape/{}".format(ctx.label.name, basename))
+    windows = ctx.attr._windows[platform_common.ConstraintValueInfo]
+    macos = ctx.attr._macos[platform_common.ConstraintValueInfo]
+    arm64 = ctx.attr._arm64[platform_common.ConstraintValueInfo]
+    amd64 = ctx.attr._amd64[platform_common.ConstraintValueInfo]
 
     args = ctx.actions.args()
     args.add(ctx.file._assimilate)
 
     # Executable format
     if ctx.target_platform_has_constraint(windows):
-        pass  # PE
-    elif ctx.target_platform_has_constraint(macos):
+        fail("Cannot assimilate on Windows, APE are already PE format. Symlink instead.")
+    elif ctx.target_platform_has_constraint(macos) and not ctx.target_platform_has_constraint(arm64):
         args.add("-m")  # MachO
     else:
         args.add("-e")  # ELF
@@ -83,14 +101,11 @@ def implementation(ctx):
         toolchain = "//ape/toolchain/assimilate:type",
     )
 
-    files = depset([executable])
-
-    runfiles = ctx.runfiles([executable])
-
-    return DefaultInfo(
-        executable = executable,
-        files = files,
-        runfiles = runfiles,
+def _symlink(ctx, executable):
+    ctx.actions.symlink(
+        output = executable,
+        target_file = ctx.file.src,
+        is_executable = True,
     )
 
 ape_assimilate = rule(