fix(build): preserve local builds without Rust

tools/packs/build.sh

@@ -83,7 +83,11 @@ pack tracking "$work/tracking" hand_landmarker.task hand_landmarker_lite.task po
     libopencv_java4.so libmediapipe_tasks_jni.so
 pack xbox "$linuxfs/droiddeck-xbox" version xodus-cli xodus-service
 pack comet "$linuxfs/droiddeck-comet" version comet
-bash "$repo/tools/stores/build-amazon.sh"
-mkdir "$work/amazon"
-cp "$repo/app/build/amazon-engine/engine.json" "$repo/app/build/amazon-engine/libdroiddeckamazon.so" "$work/amazon/"
-pack amazon "$work/amazon" engine.json libdroiddeckamazon.so
+if [[ "${DROIDDECK_SKIP_RUST:-0}" == 1 && "${CI:-false}" != true ]]; then
+    rm -f "$out/amazon.tar.zst"
+else
+    bash "$repo/tools/stores/build-amazon.sh"
+    mkdir "$work/amazon"
+    cp "$repo/app/build/amazon-engine/engine.json" "$repo/app/build/amazon-engine/libdroiddeckamazon.so" "$work/amazon/"
+    pack amazon "$work/amazon" engine.json libdroiddeckamazon.so
+fi

tools/release/runtime_inputs.py

@@ -2,6 +2,7 @@
 import hashlib
 import gzip
 import json
+import os
 from pathlib import Path
 import subprocess
 import sys
@@ -65,8 +66,9 @@ def outputs(root):
                 result['assets/' + tree + '/' + path.relative_to(base).as_posix()] = path.relative_to(root).as_posix()
     for library in ['libproot.so', 'libproot-loader.so', 'libdirectaudiorelay.so']:
         result['lib/arm64-v8a/' + library] = 'app/src/main/jniLibs/arm64-v8a/' + library
-    result['lib/arm64-v8a/libdroiddeckamazon.so'] = 'app/build/amazon-engine/libdroiddeckamazon.so'
-    result['assets/store-engines/amazon/engine.json'] = 'app/build/amazon-engine/engine.json'
+    if amazon_enabled():
+        result['lib/arm64-v8a/libdroiddeckamazon.so'] = 'app/build/amazon-engine/libdroiddeckamazon.so'
+        result['assets/store-engines/amazon/engine.json'] = 'app/build/amazon-engine/engine.json'
     result['assets/pulseaudio.tzst'] = 'app/build/prepared-assets/pulseaudio.tzst'
     result['assets/graphics_driver/adrenotools-turnip25.1.0-quest1.tzst'] = \
         'app/build/prepared-assets/graphics_driver/adrenotools-turnip25.1.0-quest1.tzst'
@@ -76,8 +78,12 @@ def outputs(root):
     return result
 
 
+def amazon_enabled():
+    return os.environ.get('CI') == 'true' or os.environ.get('DROIDDECK_SKIP_RUST') != '1'
+
+
 def required():
-    paths = ['lib/arm64-v8a/libdroiddeckamazon.so', 'assets/store-engines/amazon/engine.json']
+    paths = ['lib/arm64-v8a/libdroiddeckamazon.so', 'assets/store-engines/amazon/engine.json'] if amazon_enabled() else []
     paths += ['assets/graphics_driver/adrenotools-turnip25.1.0-quest1.tzst']
     paths += [f'assets/graphics_driver/adrenotools-{name}.tzst'
               for name in ['turnip26.3.0-a6xx', 'turnip26.3.0-quest2']]
@@ -194,7 +200,7 @@ def pack_digests(root, name):
 
 def check_apk(apk, root=ROOT):
     data = verify(root)
-    packs = {name: pack_digests(root, name) for name in PACK_NAMES}
+    packs = {name: pack_digests(root, name) for name in PACK_NAMES if name != 'amazon' or amazon_enabled()}
     with ZipFile(apk) as package:
         names = set(package.namelist())
         for library in PACKED_LIBRARIES:

tools/stores/README.md

@@ -28,6 +28,8 @@ New APKs reuse an existing pack when its digest is unchanged; changed pins downl
 their exact version rather than loading an arbitrary older engine. Loading verifies
 the manifest/library and JNI interface before configuring the engine. Unpinned local
 builds intentionally cannot borrow an arbitrary prior Amazon pack.
+The existing local `DROIDDECK_SKIP_RUST=1` mode omits Amazon too. CI always requires
+the engine and pack even when that local flag is present.
 
 Device validation still needs a fresh Amazon sign-in, existing-account upgrade, failed
 download/retry, offline relaunch, and cancel/resume installation. Robolectric integrity

tools/tests/test_runtime_inputs.py

@@ -1,6 +1,7 @@
 import importlib.util
 import gzip
 import io
+import os
 from pathlib import Path, PureWindowsPath
 import subprocess
 import tarfile
@@ -72,6 +73,14 @@ class RuntimeInputsTest(unittest.TestCase):
         with self.assertRaisesRegex(ValueError, 'proot pack provides'):
             runtime.check_apk(apk, self.root)
 
+    def test_local_rust_skip_cannot_disable_the_amazon_pack_in_ci(self):
+        with mock.patch.dict(os.environ, {'DROIDDECK_SKIP_RUST': '1', 'CI': 'false'}):
+            self.assertFalse(runtime.amazon_enabled())
+            self.assertNotIn('lib/arm64-v8a/libdroiddeckamazon.so', runtime.outputs(self.root))
+        with mock.patch.dict(os.environ, {'DROIDDECK_SKIP_RUST': '1', 'CI': 'true'}):
+            self.assertTrue(runtime.amazon_enabled())
+            self.assertIn('lib/arm64-v8a/libdroiddeckamazon.so', runtime.required())
+
     def test_missing_proot_cannot_be_attested(self):
         (self.root / 'app/src/main/jniLibs/arm64-v8a/libproot.so').unlink()
         with self.assertRaisesRegex(ValueError, 'libproot.so'):