.cargo/config.toml                    | 13 ++++++++++++-

 libcst/tests/test_fuzz.py             |  7 ++++++-

 libcst/tests/test_pyre_integration.py |  4 ++++

 3 files changed, 22 insertions(+), 2 deletions(-)

diff --git a/.cargo/config.toml b/.cargo/config.toml

index 59c989e6..aea231e5 100644

--- a/.cargo/config.toml

+++ b/.cargo/config.toml

@@ -8,4 +8,15 @@ rustflags = [

 rustflags = [

   "-C", "link-arg=-undefined",

   "-C", "link-arg=dynamic_lookup",

-]

\ No newline at end of file

+]

+

+[source.crates-io]

+replace-with = "vendored-sources"

+

+[source."https://github.com/kevinmehall/rust-peg"]

+git = "https://github.com/kevinmehall/rust-peg"

+rev = "4b146b4b78a80c07e43d7ace2d97f65bfde279a8"

+replace-with = "vendored-sources"

+

+[source.vendored-sources]

+directory = "vendor"

diff --git a/libcst/tests/test_fuzz.py b/libcst/tests/test_fuzz.py

index 66b32276..20182582 100644

--- a/libcst/tests/test_fuzz.py

+++ b/libcst/tests/test_fuzz.py

@@ -16,7 +16,12 @@ import unittest

 from datetime import timedelta

 import hypothesis

-from hypothesmith import from_grammar

+

+# not packaged yet

+try:

+    from hypothesmith import from_grammar

+except ImportError:

+    raise unittest.SkipTest("Requires hypothesmith package")

 import libcst

diff --git a/libcst/tests/test_pyre_integration.py b/libcst/tests/test_pyre_integration.py

index 021385af..76a48ee6 100644

--- a/libcst/tests/test_pyre_integration.py

+++ b/libcst/tests/test_pyre_integration.py

@@ -8,6 +8,10 @@ import json

 import os

 from pathlib import Path

 from typing import Dict, List, Mapping, Optional, Tuple, Union

+from unittest import SkipTest

+

+if os.environ.get("NO_PYRE") is not None:

+    raise SkipTest("Requires pyre-check")

 import libcst as cst

 from libcst.metadata import MetadataWrapper, PositionProvider