chore: reproduce problem with external getting instrumented

.github/workflows/ci.yaml

@@ -66,7 +66,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - run: ./minimal_download_test.sh
-      - run: bazel coverage //src/...
+      - run: bazel coverage //...
       - uses: hrishikesh-kadam/setup-lcov@6c1aa0cc9e1c02f9f58f01ac599f1064ccc83470 # v1
       # The github-actions-report-lcov doesn't follow symlinks, so get an absolute path
       - run: echo "bazel_testlogs=$(bazel info bazel-testlogs)" >> $GITHUB_ENV

e2e/use_release/.bazelrc

@@ -1,3 +1,3 @@
-# Don't instrument the root folder, since that walks into the //external folder too
+# Don't instrument the //external folder
 # See https://bazelbuild.slack.com/archives/C07HTMQFTBN/p1737600241213179?thread_ts=1736875351.548719&cid=C07HTMQFTBN
-coverage --instrumentation_filter=//src
+coverage --instrumentation_filter=^//

e2e/use_release/BUILD.bazel

@@ -1,3 +1,31 @@
-load("@rules_uv//uv:pip.bzl", "pip_compile")
+load("@aspect_rules_py//py:defs.bzl", "py_library", "py_pytest_main", "py_test")
 
-pip_compile(name = "pip_compile")
+py_library(
+    name = "lib",
+    srcs = ["__init__.py"],
+)
+
+# TODO(alex): land https://github.com/aspect-build/rules_py/pull/401 and shorten this
+py_pytest_main(
+    name = "__test__",
+    deps = [
+        "@pip//coverage",
+        "@pip//pytest",
+    ],
+)
+
+py_test(
+    name = "test",
+    srcs = [
+        "my_test.py",
+        ":__test__",
+    ],
+    main = ":__test__.py",
+    deps = [
+        ":__test__",
+        ":lib",
+    ],
+)
+
+# comment out because it produces an empty coverage.dat file and the GHA I'm using fails
+# pip_compile(name = "pip_compile")

e2e/use_release/__init__.py

@@ -0,0 +1,8 @@
+def welcome(name):
+    return "hello %s" % name
+
+
+
+
+
+

e2e/use_release/my_test.py

@@ -0,0 +1,9 @@
+from __init__ import welcome
+
+def test_welcome():
+    greeting = welcome("world")
+    assert greeting == "hello world"
+
+
+
+