From ba727863d135d77d94856e0a6906215544fd381b Mon Sep 17 00:00:00 2001
From: konstin <konstin@mailbox.org>
Date: Tue, 16 Sep 2025 15:18:47 +0200
Subject: [PATCH] Remove dynamic providers

---
 .../src/distribution_database.rs              |  27 ++---------
 crates/uv-types/src/traits.rs                 |   6 +--
 crates/uv-variant-frontend/src/lib.rs         |  45 ++----------------
 .../cpu_level_provider-0.1.0-py3-none-any.whl | Bin 2713 -> 2660 bytes
 files/cpu_level_provider-0.1.0.tar.gz         | Bin 1577 -> 1520 bytes
 .../src/cpu_level_provider/__init__.py        |   5 +-
 6 files changed, 10 insertions(+), 73 deletions(-)

diff --git a/crates/uv-distribution/src/distribution_database.rs b/crates/uv-distribution/src/distribution_database.rs
index c4c8346dd..0393e37c6 100644
--- a/crates/uv-distribution/src/distribution_database.rs
+++ b/crates/uv-distribution/src/distribution_database.rs
@@ -1,4 +1,3 @@
-use std::collections::BTreeSet;
 use std::future::Future;
 use std::io;
 use std::path::Path;
@@ -35,7 +34,7 @@ use uv_redacted::DisplaySafeUrl;
 use uv_types::{BuildContext, BuildStack, VariantsTrait};
 use uv_variants::VariantProviderOutput;
 use uv_variants::resolved_variants::ResolvedVariants;
-use uv_variants::variants_json::{Provider, VariantPropertyType, VariantsJsonContent};
+use uv_variants::variants_json::{Provider, VariantsJsonContent};
 
 use crate::archive::Archive;
 use crate::metadata::{ArchiveMetadata, Metadata};
@@ -594,25 +593,6 @@ impl<'a, Context: BuildContext> DistributionDatabase<'a, Context> {
         variants_json: VariantsJsonContent,
         marker_env: &MarkerEnvironment,
     ) -> Result<ResolvedVariants, Error> {
-        // Collect all known properties for dynamic providers.
-        // TODO(konsti): We shouldn't need to do this conversion.
-        let mut known_properties = BTreeSet::default();
-        for variant in variants_json.variants.values() {
-            for (namespace, features) in &**variant {
-                for (feature, value) in features {
-                    for value in value {
-                        // TODO(charlie): At minimum, we can probably avoid these clones.
-                        known_properties.insert(VariantPropertyType {
-                            namespace: namespace.clone(),
-                            feature: feature.clone(),
-                            value: value.clone(),
-                        });
-                    }
-                }
-            }
-        }
-        let known_properties: Vec<_> = known_properties.into_iter().collect();
-
         // Compute the set of available variants.
         let provider_outputs: FxHashMap<VariantNamespace, Arc<VariantProviderOutput>> =
             futures::stream::iter(variants_json.providers.iter().filter(|(_, provider)| {
@@ -620,7 +600,7 @@ impl<'a, Context: BuildContext> DistributionDatabase<'a, Context> {
                     .enable_if
                     .evaluate(marker_env, MarkerVariantsUniversal, &[])
             }))
-            .map(|(name, provider)| self.query_variant_provider(name, provider, &known_properties))
+            .map(|(name, provider)| self.query_variant_provider(name, provider))
             // TODO(konsti): Buffer size
             .buffered(8)
             .map_ok(|config| (config.namespace.clone(), config))
@@ -637,7 +617,6 @@ impl<'a, Context: BuildContext> DistributionDatabase<'a, Context> {
         &self,
         name: &VariantNamespace,
         provider: &Provider,
-        known_properties: &[VariantPropertyType],
     ) -> Result<Arc<VariantProviderOutput>, Error> {
         let config = if self.build_context.variants().register(provider.clone()) {
             debug!("Querying provider `{name}` for variants");
@@ -648,7 +627,7 @@ impl<'a, Context: BuildContext> DistributionDatabase<'a, Context> {
                 .build_context
                 .setup_variants(backend_name, provider, BuildOutput::Debug)
                 .await?;
-            let config = builder.query(known_properties).await?;
+            let config = builder.query().await?;
             trace!(
                 "Found namespace {} with configs {:?}",
                 config.namespace, config
diff --git a/crates/uv-types/src/traits.rs b/crates/uv-types/src/traits.rs
index 47844c132..9f7eac724 100644
--- a/crates/uv-types/src/traits.rs
+++ b/crates/uv-types/src/traits.rs
@@ -18,7 +18,6 @@ use uv_normalize::PackageName;
 use uv_python::{Interpreter, PythonEnvironment};
 use uv_variants::VariantProviderOutput;
 use uv_variants::cache::VariantProviderCache;
-use uv_variants::variants_json::VariantPropertyType;
 use uv_workspace::WorkspaceCache;
 
 use crate::{BuildArena, BuildIsolation};
@@ -204,10 +203,7 @@ pub trait SourceBuildTrait {
 }
 
 pub trait VariantsTrait {
-    fn query(
-        &self,
-        known_properties: &[VariantPropertyType],
-    ) -> impl Future<Output = Result<VariantProviderOutput>>;
+    fn query(&self) -> impl Future<Output = Result<VariantProviderOutput>>;
 }
 
 /// A wrapper for [`uv_installer::SitePackages`]
diff --git a/crates/uv-variant-frontend/src/lib.rs b/crates/uv-variant-frontend/src/lib.rs
index 5001ac458..0b2b2b00f 100644
--- a/crates/uv-variant-frontend/src/lib.rs
+++ b/crates/uv-variant-frontend/src/lib.rs
@@ -27,7 +27,7 @@ use uv_python::{Interpreter, PythonEnvironment};
 use uv_static::EnvVars;
 use uv_types::{BuildContext, BuildStack, VariantsTrait};
 use uv_variants::VariantProviderOutput;
-use uv_variants::variants_json::{Provider, VariantPropertyType};
+use uv_variants::variants_json::Provider;
 use uv_virtualenv::OnExisting;
 
 pub struct VariantBuild {
@@ -50,11 +50,8 @@ pub struct VariantBuild {
 }
 
 impl VariantsTrait for VariantBuild {
-    async fn query(
-        &self,
-        known_properties: &[VariantPropertyType],
-    ) -> anyhow::Result<VariantProviderOutput> {
-        Ok(self.build(known_properties).await?)
+    async fn query(&self) -> anyhow::Result<VariantProviderOutput> {
+        Ok(self.build().await?)
     }
 }
 
@@ -151,15 +148,9 @@ impl VariantBuild {
     }
 
     /// Run a variant provider to infer compatible variants.
-    pub async fn build(
-        &self,
-        known_properties: &[VariantPropertyType],
-    ) -> Result<VariantProviderOutput, Error> {
+    pub async fn build(&self) -> Result<VariantProviderOutput, Error> {
         // Write the hook output to a file so that we can read it back reliably.
         let out_file = self.temp_dir.path().join("output.json");
-        let in_file = self.temp_dir.path().join("input.json");
-        let in_writer = fs_err::File::create(&in_file)?;
-        serde_json::to_writer(in_writer, known_properties)?;
 
         // Construct the appropriate build script based on the build kind.
         let script = formatdoc! {
@@ -168,32 +159,7 @@ impl VariantBuild {
 
             import json
 
-            if backend.dynamic:
-                class VariantPropertyType:
-                    namespace: str
-                    feature: str
-                    value: str
-
-                    def __init__(self, namespace: str, feature: str, value: str):
-                        self.namespace = namespace
-                        self.feature = feature
-                        self.value = value
-
-                with open("{in_file}") as fp:
-                    known_properties = json.load(fp)
-
-                # Filter to the namespace of the plugin.
-                filtered_properties = []
-                for known_property in known_properties:
-                    # We don't know the namespace ahead of time, so the frontend passes all properties.
-                    if known_property["namespace"] != backend.namespace:
-                        continue
-                    filtered_properties.append(VariantPropertyType(**known_property))
-                known_properties = frozenset(filtered_properties)
-            else:
-                known_properties = None
-
-            configs = backend.get_supported_configs(known_properties)
+            configs = backend.get_supported_configs()
             features = {{config.name: config.values for config in configs}}
             output = {{"namespace": backend.namespace, "features": features}}
 
@@ -201,7 +167,6 @@ impl VariantBuild {
                 fp.write(json.dumps(output))
             "#,
             backend = self.backend.import(&self.backend_name),
-            in_file = in_file.escape_for_python(),
             out_file = out_file.escape_for_python()
         };
 
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
index a7726639c97def8a804a41ce4f067f1b5e58adc2..6d1908b15598e2ec966faefb394cd152216a83e7 100644
GIT binary patch
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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
index beed6644e121b47a5fa5a6c223a0f869e3413130..933ff802f07c0e06659ab0d29d68069312ca1b16 100644
GIT binary patch
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diff --git a/scripts/packages/cpu_level_provider/src/cpu_level_provider/__init__.py b/scripts/packages/cpu_level_provider/src/cpu_level_provider/__init__.py
index 12b35c986..55168196f 100644
--- a/scripts/packages/cpu_level_provider/src/cpu_level_provider/__init__.py
+++ b/scripts/packages/cpu_level_provider/src/cpu_level_provider/__init__.py
@@ -22,10 +22,7 @@ class VariantPropertyType:
 
 
 def get_supported_configs(
-    known_properties: frozenset[VariantPropertyType] | None,
 ) -> list[VariantFeatureConfigType]:
-    if known_properties is not None:
-        raise ValueError("known_properties are unsupported")
     if override := os.getenv("UV_CPU_LEVEL_OVERRIDE"):
         try:
             current_level = int(override)
@@ -98,7 +95,7 @@ def get_x86_64_level() -> int | None:
 
 
 def main():
-    print(get_supported_configs(None))
+    print(get_supported_configs())
 
 
 if __name__ == "__main__":