fix(coverage): bump to latest coverage.py and fix import shadowing (#1249)

Fixes #1196.

Currently the `coverage.py` module does not work if updated to the
latest
version with the following error:
```
ImportError: cannot import name 'MappingProxyType' from partially
initialized module 'types' (most likely due to a circular import)
...~pypi__coverage_cp39_x86_64-unknown-linux-gnu/coverage/types.py)
```

Where the `MappingProxyType` actually exists in Python's std lib. To
fix,
modify sys.path before the first import of coverage.

Summary:
- chore(coverage): bump coverage.py to 7.2.7
- fix(coverage): patch sys.path before importing anything from coverage
- test(coverage): add extra assertions about the module names

Author: aignas

MODULE.bazel

@@ -34,6 +34,7 @@ use_repo(
     "pypi__coverage_cp310_aarch64-unknown-linux-gnu",
     "pypi__coverage_cp310_x86_64-apple-darwin",
     "pypi__coverage_cp310_x86_64-unknown-linux-gnu",
+    "pypi__coverage_cp311_aarch64-apple-darwin",
     "pypi__coverage_cp311_aarch64-unknown-linux-gnu",
     "pypi__coverage_cp311_x86_64-apple-darwin",
     "pypi__coverage_cp311_x86_64-unknown-linux-gnu",

examples/bzlmod/test.py

@@ -30,6 +30,18 @@ def test_coverage_doesnt_shadow_stdlib(self):
         except ImportError:
             self.skipTest("not running under coverage, skipping")
 
+        self.assertEqual(
+            "html",
+            f"{html_stdlib.__name__}",
+            "'html' from stdlib was not loaded correctly",
+        )
+
+        self.assertEqual(
+            "coverage.html",
+            f"{html_coverage.__name__}",
+            "'coverage.html' was not loaded correctly",
+        )
+
         self.assertNotEqual(
             html_stdlib,
             html_coverage,

python/private/coverage.patch

@@ -1,15 +1,17 @@
 # Because of how coverage is run, the current directory is the first in
 # sys.path. This is a problem for the tests, because they may import a module of
 # the same name as a module in the current directory.
-diff --git a/coverage/cmdline.py b/coverage/cmdline.py
-index dbf66e0a..780505ac 100644
---- a/coverage/cmdline.py
-+++ b/coverage/cmdline.py
-@@ -937,6 +937,7 @@ def main(argv=None):
-     This is installed as the script entry point.
- 
-     """
-+    sys.path.append(sys.path.pop(0))
-     if argv is None:
-         argv = sys.argv[1:]
-     try:
+#
+# NOTE @aignas 2023-06-05: we have to do this before anything from coverage gets
+# imported.
+diff --git a/coverage/__main__.py b/coverage/__main__.py
+index 79aa4e2b..291fcff8 100644
+--- a/coverage/__main__.py
++++ b/coverage/__main__.py
+@@ -4,5 +4,6 @@
+ """Coverage.py's main entry point."""
+
+ import sys
++sys.path.append(sys.path.pop(0))
+ from coverage.cmdline import main
+ sys.exit(main())

python/private/coverage_deps.bzl

@@ -28,70 +28,74 @@ load(
 _coverage_deps = {
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         "aarch64-apple-darwin": (
-            "https://files.pythonhosted.org/packages/89/a2/cbf599e50bb4be416e0408c4cf523c354c51d7da39935461a9687e039481/coverage-6.5.0-cp310-cp310-macosx_11_0_arm64.whl",
-            "784f53ebc9f3fd0e2a3f6a78b2be1bd1f5575d7863e10c6e12504f240fd06660",
+            "https://files.pythonhosted.org/packages/3d/80/7060a445e1d2c9744b683dc935248613355657809d6c6b2716cdf4ca4766/coverage-7.2.7-cp310-cp310-macosx_11_0_arm64.whl",
+            "6d040ef7c9859bb11dfeb056ff5b3872436e3b5e401817d87a31e1750b9ae2fb",
         ),
         "aarch64-unknown-linux-gnu": (
-            "https://files.pythonhosted.org/packages/15/b0/3639d84ee8a900da0cf6450ab46e22517e4688b6cec0ba8ab6f8166103a2/coverage-6.5.0-cp310-cp310-manylinux_2_17_aarch64.manylinux2014_aarch64.whl",
-            "b4a5be1748d538a710f87542f22c2cad22f80545a847ad91ce45e77417293eb4",
+            "https://files.pythonhosted.org/packages/b8/9d/926fce7e03dbfc653104c2d981c0fa71f0572a9ebd344d24c573bd6f7c4f/coverage-7.2.7-cp310-cp310-manylinux_2_17_aarch64.manylinux2014_aarch64.whl",
+            "ba90a9563ba44a72fda2e85302c3abc71c5589cea608ca16c22b9804262aaeb6",
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-            "https://files.pythonhosted.org/packages/c4/8d/5ec7d08f4601d2d792563fe31db5e9322c306848fec1e65ec8885927f739/coverage-6.5.0-cp310-cp310-macosx_10_9_x86_64.whl",
-            "ef8674b0ee8cc11e2d574e3e2998aea5df5ab242e012286824ea3c6970580e53",
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+            "d39b5b4f2a66ccae8b7263ac3c8170994b65266797fb96cbbfd3fb5b23921db8",
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-            "af4fffaffc4067232253715065e30c5a7ec6faac36f8fc8d6f64263b15f74db0",
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+            "31563e97dae5598556600466ad9beea39fb04e0229e61c12eaa206e0aa202063",
         ),
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+        "aarch64-apple-darwin": (
+            "https://files.pythonhosted.org/packages/67/d7/cd8fe689b5743fffac516597a1222834c42b80686b99f5b44ef43ccc2a43/coverage-7.2.7-cp311-cp311-macosx_11_0_arm64.whl",
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-            "4a5375e28c5191ac38cca59b38edd33ef4cc914732c916f2929029b4bfb50795",
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-            "a8fb6cf131ac4070c9c5a3e21de0f7dc5a0fbe8bc77c9456ced896c12fcdad91",
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