diff --git a/build.cm b/build.cm
index d89f691f..d79119e1 100644
--- a/build.cm
+++ b/build.cm
@@ -920,17 +920,17 @@ Build.compile_native = function(src_path, target, buildtype, pkg) {
   var qbe_emit = use('qbe_emit')
 
   // Step 2: Generate QBE IL
-  // Use relative path from package dir for symbol name (must match loader in try_native_mod_dylib)
+  // Derive package from the file itself (not the caller's context) to ensure correct symbol names
   var sym_name = null
-  var _pkg_dir = null
+  var _file_info = shop.file_info(src_path)
+  var _actual_pkg = _file_info.package || pkg
   var _sym_stem = null
-  if (pkg) {
-    _pkg_dir = shop.get_package_dir(pkg)
-    if (starts_with(src_path, _pkg_dir + '/'))
-      _sym_stem = text(src_path, length(_pkg_dir) + 1)
+  if (_actual_pkg) {
+    if (_file_info.name)
+      _sym_stem = _file_info.name + (_file_info.is_actor ? '.ce' : '.cm')
     else
       _sym_stem = fd.basename(src_path)
-    sym_name = shop.c_symbol_for_file(pkg, _sym_stem)
+    sym_name = shop.c_symbol_for_file(_actual_pkg, _sym_stem)
   }
   var il_parts = qbe_emit(optimized, qbe_macros, sym_name)
 
@@ -1001,16 +1001,17 @@ Build.compile_native_ir = function(optimized, src_path, opts) {
   var qbe_macros = use('qbe')
   var qbe_emit = use('qbe_emit')
 
+  // Derive package from the file itself (not the caller's context)
   var sym_name = null
-  var _pkg_dir2 = null
+  var _file_info2 = shop.file_info(src_path)
+  var _actual_pkg2 = _file_info2.package || pkg
   var _sym_stem2 = null
-  if (pkg) {
-    _pkg_dir2 = shop.get_package_dir(pkg)
-    if (starts_with(src_path, _pkg_dir2 + '/'))
-      _sym_stem2 = text(src_path, length(_pkg_dir2) + 1)
+  if (_actual_pkg2) {
+    if (_file_info2.name)
+      _sym_stem2 = _file_info2.name + (_file_info2.is_actor ? '.ce' : '.cm')
     else
       _sym_stem2 = fd.basename(src_path)
-    sym_name = shop.c_symbol_for_file(pkg, _sym_stem2)
+    sym_name = shop.c_symbol_for_file(_actual_pkg2, _sym_stem2)
   }
   var il_parts = qbe_emit(optimized, qbe_macros, sym_name)
 
diff --git a/internal/engine.cm b/internal/engine.cm
index b51800c8..5883ad62 100644
--- a/internal/engine.cm
+++ b/internal/engine.cm
@@ -1737,7 +1737,6 @@ $_.clock(_ => {
   var native_build = null
   var native_dylib_path = null
   var native_handle = null
-  var native_parts = null
   var native_basename = null
   var native_sym = null
 
@@ -1746,8 +1745,7 @@ $_.clock(_ => {
     native_build = use_core('build')
     native_dylib_path = native_build.compile_native(prog_path, null, null, pkg)
     native_handle = os.dylib_open(native_dylib_path)
-    native_parts = array(prog_path, '/')
-    native_basename = native_parts[length(native_parts) - 1]
+    native_basename = file_info.name ? file_info.name + (file_info.is_actor ? '.ce' : '.cm') : fd.basename(prog_path)
     native_sym = pkg ? shop.c_symbol_for_file(pkg, native_basename) : null
     if (native_sym)
       os.native_module_load_named(native_handle, native_sym, env)
diff --git a/internal/shop.cm b/internal/shop.cm
index 869e552a..2efb2c9f 100644
--- a/internal/shop.cm
+++ b/internal/shop.cm
@@ -255,31 +255,34 @@ function safe_canonicalize(pkg) {
 // given a file, find the absolute path, package name, and import name
 Shop.file_info = function(file) {
   var info = {
-    path: file, 
+    path: file,
     is_module: false,
     is_actor: false,
     package: null,
     name: null
   }
-  
+
   if (ends_with(file, MOD_EXT))
     info.is_module = true
   else if (ends_with(file, ACTOR_EXT))
     info.is_actor = true
-  
+
   // Find package directory and determine package name
+  // find_package_dir resolves symlinks internally, so we must use the
+  // resolved file path for substring math to get the correct name.
   var pkg_dir = pkg_tools.find_package_dir(file)
+  var resolved_file = fd.realpath(file) || file
   if (pkg_dir) {
     info.package = abs_path_to_package(pkg_dir)
 
     if (info.is_actor)
-      info.name = text(file, length(pkg_dir) + 1, length(file) - length(ACTOR_EXT))
+      info.name = text(resolved_file, length(pkg_dir) + 1, length(resolved_file) - length(ACTOR_EXT))
     else if (info.is_module)
-      info.name = text(file, length(pkg_dir) + 1, length(file) - length(MOD_EXT))
+      info.name = text(resolved_file, length(pkg_dir) + 1, length(resolved_file) - length(MOD_EXT))
     else
-      info.name = text(file, length(pkg_dir) + 1)
+      info.name = text(resolved_file, length(pkg_dir) + 1)
   }
-  
+
   return info
 }
 
@@ -525,7 +528,7 @@ function try_native_mod_dylib(pkg, stem) {
   var sym = Shop.c_symbol_for_file(pkg, stem)
   // Verify the symbol actually exists in the dylib before returning native descriptor
   if (sym && !os.dylib_has_symbol(handle, sym) && !os.dylib_has_symbol(handle, 'cell_main')) {
-    log.shop('native dylib for ' + stem + ' missing symbol ' + sym + ' and cell_main, falling back to bytecode')
+    log.shop('native dylib for ' + stem + ' (dylib=' + build_path + ') missing symbol ' + sym + ' and cell_main, falling back to bytecode')
     return null
   }
   return {_native: true, _handle: handle, _sym: sym}
@@ -768,6 +771,8 @@ function resolve_mod_fn(path, pkg) {
   var dylib_path = null
   var handle = null
   var sym = null
+  var _fi = null
+  var _fi_pkg = null
 
   policy = get_policy()
 
@@ -793,7 +798,10 @@ function resolve_mod_fn(path, pkg) {
       if (dylib_path) {
         handle = os.dylib_open(dylib_path)
         if (handle) {
-          sym = pkg ? Shop.c_symbol_for_file(pkg, _stem || fd.basename(path)) : null
+          // Derive symbol from file_info (authoritative package), not caller's pkg
+          _fi = Shop.file_info(path)
+          _fi_pkg = _fi.package || pkg
+          sym = _fi_pkg ? Shop.c_symbol_for_file(_fi_pkg, (_fi.name ? _fi.name + (_fi.is_actor ? '.ce' : '.cm') : fd.basename(path))) : null
           return {_native: true, _handle: handle, _sym: sym}
         }
       }
@@ -954,7 +962,7 @@ function resolve_path(path, ctx)
   if (alias) {
     alias_path = get_packages_dir() + '/' + fd.safe_package_path(alias.package) + '/' + alias.path
     if (fd.is_file(alias_path))
-      return {path: alias_path, scope: SCOPE_PACKAGE, pkg: ctx}
+      return {path: alias_path, scope: SCOPE_PACKAGE, pkg: alias.package}
   }
 
   package_path = get_packages_dir() + '/' + fd.safe_package_path(path)
@@ -2360,17 +2368,12 @@ Shop.use_native = function(path, package_context) {
 
   var file_info = Shop.file_info(src_path)
   var pkg = file_info.package || (locator ? locator.pkg : package_context)
-  var sym_stem = fd.basename(src_path)
-  var pkg_dir = null
+  var sym_stem = file_info.name ? file_info.name + (file_info.is_actor ? '.ce' : '.cm') : fd.basename(src_path)
   cache_key = 'native:' + text(pkg || '') + ':' + src_path
   if (use_cache[cache_key]) return use_cache[cache_key]
 
   var sym_name = null
   if (pkg) {
-    pkg_dir = get_packages_dir() + '/' + fd.safe_package_path(pkg)
-    if (starts_with(src_path, pkg_dir + '/')) {
-      sym_stem = text(src_path, length(pkg_dir) + 1)
-    }
     sym_name = Shop.c_symbol_for_file(pkg, sym_stem)
   }