diff --git a/build-wheels.sh b/build-wheels.sh
new file mode 100755
index 000000000..193eed495
--- /dev/null
+++ b/build-wheels.sh
@@ -0,0 +1,26 @@
+#!/usr/bin/env bash
+# build-wheels.sh
+#
+# This script builds wheels for the project's dependencies.
+#
+# It uses uv to build wheels for the following packages:
+# - `provider_fictional_hw`: A fictional hardware provider package
+# - `variantlib`: A library for handling variant configurations
+#
+# The wheels are built and placed in the ./wheels directory.
+#
+# Any existing wheels are removed before building.
+
+set -euxo pipefail
+
+UV=./target/debug/uv
+
+# Create the destination directory if it doesn't exist.
+rm -rf wheels
+mkdir wheels
+
+# Build the wheels for the fictional hardware provider package.
+$UV build --out-dir ./wheels --project ./vendor/provider_fictional_hw
+
+# Build the wheels for the variant library.
+$UV build --out-dir ./wheels --project ./vendor/variantlib
diff --git a/files/anyio-4.9.0-py3-none-any.whl b/files/anyio-4.9.0-py3-none-any.whl
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diff --git a/files/built_by_uv-0.1.0-py3-none-any-cpu1.whl b/files/built_by_uv-0.1.0-py3-none-any-cpu1.whl
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diff --git a/files/built_by_uv-0.1.0-py3-none-any-cpu2.whl b/files/built_by_uv-0.1.0-py3-none-any-cpu2.whl
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diff --git a/files/built_by_uv-0.1.0-py3-none-any-cpu3.whl b/files/built_by_uv-0.1.0-py3-none-any-cpu3.whl
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diff --git a/files/built_by_uv-0.1.0-py3-none-any-cpu4.whl b/files/built_by_uv-0.1.0-py3-none-any-cpu4.whl
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diff --git a/files/built_by_uv-0.1.0-variants.json b/files/built_by_uv-0.1.0-variants.json
new file mode 100644
index 000000000..b2cc5ac41
--- /dev/null
+++ b/files/built_by_uv-0.1.0-variants.json
@@ -0,0 +1,61 @@
+{
+  "default-priorities": {
+    "feature": {
+      "cpu_level": [
+        "x86_64_level"
+      ]
+    },
+    "namespace": [
+      "cpu_level"
+    ],
+    "property": {
+      "cpu_level": {
+        "x86_64_level": [
+          "v4",
+          "v3",
+          "v2",
+          "v1"
+        ]
+      }
+    }
+  },
+  "providers": {
+    "cpu_level": {
+      "enable-if": "platform_machine == 'x86_64' or platform_machine == 'AMD64'",
+      "plugin-api": "cpu_level_provider",
+      "requires": [
+        "cpu_level_provider"
+      ]
+    }
+  },
+  "variants": {
+    "cpu1": {
+      "cpu_level": {
+        "x86_64_level": [
+          "v1"
+        ]
+      }
+    },
+    "cpu2": {
+      "cpu_level": {
+        "x86_64_level": [
+          "v2"
+        ]
+      }
+    },
+    "cpu3": {
+      "cpu_level": {
+        "x86_64_level": [
+          "v3"
+        ]
+      }
+    },
+    "cpu4": {
+      "cpu_level": {
+        "x86_64_level": [
+          "v4"
+        ]
+      }
+    }
+  }
+}
diff --git a/files/cpu_level_provider-0.1.0-py3-none-any.whl b/files/cpu_level_provider-0.1.0-py3-none-any.whl
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diff --git a/files/cpu_level_provider-0.1.0.tar.gz b/files/cpu_level_provider-0.1.0.tar.gz
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index 000000000..beed6644e
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diff --git a/files/idna-3.10-py3-none-any.whl b/files/idna-3.10-py3-none-any.whl
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index 000000000..52759bdd2
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diff --git a/files/sniffio-1.3.1-py3-none-any.whl b/files/sniffio-1.3.1-py3-none-any.whl
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index 000000000..04f44e47d
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diff --git a/files_sdist/built_by_uv-0.1.0.tar.gz b/files_sdist/built_by_uv-0.1.0.tar.gz
new file mode 100644
index 000000000..8632c807e
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diff --git a/files_wheel/built_by_uv-0.1.0-py3-none-any.whl b/files_wheel/built_by_uv-0.1.0-py3-none-any.whl
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diff --git a/scripts/packages/built-by-uv/pyproject.toml b/scripts/packages/built-by-uv/pyproject.toml
index fe590308f..c25c89211 100644
--- a/scripts/packages/built-by-uv/pyproject.toml
+++ b/scripts/packages/built-by-uv/pyproject.toml
@@ -23,6 +23,13 @@ scripts = "scripts"
 data = "assets"
 headers = "header"
 
+[variant.default-priorities]
+namespace = ["cpu_level"]
+
+[variant.providers.cpu_level]
+requires = ["cpu_level_provider >= 0.1, <0.2"]
+enable-if = "platform_machine == 'x86_64' or platform_machine == 'AMD64'"
+
 [build-system]
 requires = ["uv_build>=0.8.0,<0.10.0"]
 build-backend = "uv_build"
diff --git a/test_torch.sh b/test_torch.sh
new file mode 100755
index 000000000..c0b44a581
--- /dev/null
+++ b/test_torch.sh
@@ -0,0 +1,12 @@
+#!/bin/bash
+
+set -e
+
+uv venv --clear -q -p 3.13 &&  echo "torch" | cargo run -q -- pip compile - --index https://download.pytorch.org/whl/test/variant/ --no-progress --no-annotate -v # --no-cache
+
+export NV_VARIANT_PROVIDER_FORCE_KMD_DRIVER_VERSION=570.133.20
+export NV_VARIANT_PROVIDER_FORCE_CUDA_DRIVER_VERSION=12.8
+uv venv --clear -q -p 3.13 && echo "torch" | cargo run -q -- pip compile - --index https://download.pytorch.org/whl/test/variant/ --no-progress --no-annotate -v # --no-cache
+
+# For user testing
+# cargo run pip install torch --index https://download.pytorch.org/whl/test/variant/ --no-cache
diff --git a/test_variants.sh b/test_variants.sh
new file mode 100755
index 000000000..fd90f2465
--- /dev/null
+++ b/test_variants.sh
@@ -0,0 +1,14 @@
+#!/bin/bash
+
+set -e
+
+# No matching variant wheel, no non-variant wheel or sdist
+uv venv -q && ( ( UV_CPU_LEVEL_OVERRIDE=0 cargo run pip install built-by-uv --no-index --no-cache --no-progress --find-links ./files && exit 1 ) || exit 0 )
+# No matching variant wheel, but a non-variant wheel
+uv venv -q && UV_CPU_LEVEL_OVERRIDE=0 cargo run pip install built-by-uv --no-index --no-cache --no-progress --find-links ./files --find-links ./files_wheel
+# No matching variant wheel, but a non-variant sdist
+uv venv -q && UV_CPU_LEVEL_OVERRIDE=0 cargo run pip install built-by-uv --no-index --no-cache --no-progress --find-links ./files --find-links ./files_sdist
+# Matching cpu2 variant wheel
+uv venv -q && UV_CPU_LEVEL_OVERRIDE=2 cargo run pip install built-by-uv --no-index --no-cache --no-progress -v --find-links ./files --find-links ./files_wheel
+# Matching cpu2 variant wheel, to be preferred over the wheel and the sdist
+uv venv -q && UV_CPU_LEVEL_OVERRIDE=2 cargo run pip install built-by-uv --no-index --no-cache --no-progress -v --find-links ./files --find-links ./files_wheel --find-links ./files_sdist