mattgodbolt
diff --git a/‎python/whl.bzl
Copy file name to clipboardExpand all lines: python/whl.bzl
+14-1Lines changed: 14 additions & 1 deletion b/‎python/whl.bzl
Copy file name to clipboardExpand all lines: python/whl.bzl
+14-1Lines changed: 14 additions & 1 deletion
@@ -13,11 +13,24 @@
 # limitations under the License.
 """Import .whl files into Bazel."""
 
+def _find_python(repository_ctx):
+  if "BAZEL_PYTHON" in repository_ctx.os.environ:
+      return repository_ctx.os.environ.get("BAZEL_PYTHON")
+
+  python_path = repository_ctx.which("python")
+  if not python_path:
+      python_path = repository_ctx.which("python.exe")
+  if python_path:
+      return python_path
+
+  fail("rules_python requires a python interpreter installed. " +
+       "Please set BAZEL_PYTHON, or put it on your path.")
+
 def _whl_impl(repository_ctx):
     """Core implementation of whl_library."""
 
     args = [
-        "python",
+        _find_python(repository_ctx),
         repository_ctx.path(repository_ctx.attr._script),
         "--whl",
         repository_ctx.path(repository_ctx.attr.whl),