diff --git a/pkl/BUILD.bazel b/pkl/BUILD.bazel
index efdf8d2..ec20925 100644
--- a/pkl/BUILD.bazel
+++ b/pkl/BUILD.bazel
@@ -99,6 +99,9 @@ toolchain(
 
 java_binary(
     name = "pkl_cli_java",
+    jvm_flags = [
+        "-XX:MaxRAMPercentage=80.0",
+    ],
     main_class = "org.pkl.cli.Main",
     runtime_deps = [
         artifact(
diff --git a/pkl/private/org/pkl_lang/bazel/symlinks/Symlinks.java b/pkl/private/org/pkl_lang/bazel/symlinks/Symlinks.java
index 2a94b43..ef9adb5 100644
--- a/pkl/private/org/pkl_lang/bazel/symlinks/Symlinks.java
+++ b/pkl/private/org/pkl_lang/bazel/symlinks/Symlinks.java
@@ -60,7 +60,7 @@ public static void main(String[] args) throws IOException {
                 }
 
                 Files.createDirectories(link.getParent());
-                Files.createSymbolicLink(link, target);
+                Files.copy(target, link);
             }
         }
     }
diff --git a/pkl/private/pkl.bzl b/pkl/private/pkl.bzl
index 9749199..2e6b24c 100644
--- a/pkl/private/pkl.bzl
+++ b/pkl/private/pkl.bzl
@@ -62,6 +62,10 @@ def _prepare_pkl_script(ctx, is_test_target):
                 path_to_symlink_target[file.path] = path
 
     cache_root_path, caches, cache_deps = root_caches_and_dependencies(ctx.attr.srcs + ctx.attr.deps)
+
+    if is_test_target and cache_root_path != None:
+        cache_root_path = cache_root_path.removeprefix(ctx.genfiles_dir.path)[1:]
+
     if len(caches):
         path_to_symlink_target[caches[0].pkl_project.path] = "%s/PklProject" % working_dir
         path_to_symlink_target[caches[0].pkl_project_deps.path] = "%s/PklProject.deps.json" % working_dir