fix tests

internal/shop.cm

@@ -2288,6 +2288,52 @@ Shop.load_as_dylib = function(path, pkg) {
   return os.native_module_load_named(result._handle, result._sym, env)
 }
 
+// Trace all transitive module dependencies for a file.
+// Returns {scripts: [{path, package}], c_packages: [string]}
+Shop.trace_deps = function(file_path) {
+  var visited = {}
+  var scripts = []
+  var c_packages = {}
+
+  function trace(fp) {
+    if (visited[fp]) return
+    visited[fp] = true
+    var fi = Shop.file_info(fp)
+    var file_pkg = fi.package
+    var idx = null
+    var j = 0
+    var imp = null
+    var rinfo = null
+    if (ends_with(fp, '.cm'))
+      scripts[] = {path: fp, package: file_pkg}
+    var _trace = function() {
+      idx = Shop.index_file(fp)
+      if (!idx || !idx.imports) return
+      j = 0
+      while (j < length(idx.imports)) {
+        imp = idx.imports[j]
+        rinfo = Shop.resolve_import_info(imp.module_path, file_pkg)
+        if (rinfo) {
+          if (rinfo.type == 'script' && rinfo.resolved_path)
+            trace(rinfo.resolved_path)
+          else if (rinfo.type == 'native' && rinfo.package)
+            c_packages[rinfo.package] = true
+        }
+        j = j + 1
+      }
+    } disruption {}
+    _trace()
+  }
+
+  trace(file_path)
+  return {scripts: scripts, c_packages: array(c_packages)}
+}
+
+// Check if a C package has a build manifest (was previously built)
+Shop.has_c_manifest = function(pkg) {
+  return fd.is_file(dylib_manifest_path(pkg))
+}
+
 // Check if a .cm file has a cached bytecode artifact (mach or mcode)
 Shop.is_cached = function(path) {
   if (!fd.is_file(path)) return false