We do not have uv packaged yet.

--- build-1.2.2.post1/pyproject.toml.orig
+++ build-1.2.2.post1/pyproject.toml
@@ -51,7 +51,7 @@
   "sphinx-issues >= 3.0.0",
 ]
 test = [
-  "build[uv, virtualenv]",
+  "build[virtualenv]",
   "filelock >= 3",
   "pytest >= 6.2.4",
   "pytest-cov >= 2.12",