Add --no-hashes to uv export (#6954)

## Summary

Closes https://github.com/astral-sh/uv/issues/6944.

crates/uv-cli/src/lib.rs

@@ -2802,6 +2802,14 @@ pub struct ExportArgs {
     #[arg(long, overrides_with("dev"))]
     pub no_dev: bool,
 
+    /// Include hashes for all dependencies.
+    #[arg(long, overrides_with("no_hashes"), hide = true)]
+    pub hashes: bool,
+
+    /// Omit hashes in the generated output.
+    #[arg(long, overrides_with("hashes"))]
+    pub no_hashes: bool,
+
     /// Assert that the `uv.lock` will remain unchanged.
     ///
     /// Requires that the lockfile is up-to-date. If the lockfile is missing or

crates/uv-resolver/src/lock/requirements_txt.rs

@@ -24,7 +24,10 @@ type LockGraph<'lock> = Graph<Node<'lock>, Edge, Directed>;
 
 /// An export of a [`Lock`] that renders in `requirements.txt` format.
 #[derive(Debug)]
-pub struct RequirementsTxtExport<'lock>(LockGraph<'lock>);
+pub struct RequirementsTxtExport<'lock> {
+    graph: LockGraph<'lock>,
+    hashes: bool,
+}
 
 impl<'lock> RequirementsTxtExport<'lock> {
     pub fn from_lock(
@@ -32,6 +35,7 @@ impl<'lock> RequirementsTxtExport<'lock> {
         root_name: &PackageName,
         extras: &ExtrasSpecification,
         dev: &[GroupName],
+        hashes: bool,
     ) -> Result<Self, LockError> {
         let size_guess = lock.packages.len();
         let mut petgraph = LockGraph::with_capacity(size_guess, size_guess);
@@ -114,7 +118,7 @@ impl<'lock> RequirementsTxtExport<'lock> {
 
         let graph = propagate_markers(petgraph);
 
-        Ok(Self(graph))
+        Ok(Self { graph, hashes })
     }
 }
 
@@ -122,7 +126,7 @@ impl std::fmt::Display for RequirementsTxtExport<'_> {
     fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
         // Collect all packages.
         let mut nodes = self
-            .0
+            .graph
             .raw_nodes()
             .iter()
             .map(|node| &node.weight)
@@ -197,12 +201,14 @@ impl std::fmt::Display for RequirementsTxtExport<'_> {
                 write!(f, " ; {contents}")?;
             }
 
-            let hashes = package.hashes();
-            if !hashes.is_empty() {
-                for hash in &hashes {
-                    writeln!(f, " \\")?;
-                    write!(f, "    --hash=")?;
-                    write!(f, "{hash}")?;
+            if self.hashes {
+                let hashes = package.hashes();
+                if !hashes.is_empty() {
+                    for hash in &hashes {
+                        writeln!(f, " \\")?;
+                        write!(f, "    --hash=")?;
+                        write!(f, "{hash}")?;
+                    }
                 }
             }
 

crates/uv/src/commands/project/export.rs

@@ -22,6 +22,7 @@ use crate::settings::ResolverSettings;
 pub(crate) async fn export(
     format: ExportFormat,
     package: Option<PackageName>,
+    hashes: bool,
     extras: ExtrasSpecification,
     dev: bool,
     locked: bool,
@@ -112,8 +113,13 @@ pub(crate) async fn export(
     // Generate the export.
     match format {
         ExportFormat::RequirementsTxt => {
-            let export =
-                RequirementsTxtExport::from_lock(&lock, project.project_name(), &extras, &dev)?;
+            let export = RequirementsTxtExport::from_lock(
+                &lock,
+                project.project_name(),
+                &extras,
+                &dev,
+                hashes,
+            )?;
             anstream::println!(
                 "{}",
                 "# This file was autogenerated via `uv export`.".green()

crates/uv/src/lib.rs

@@ -1273,6 +1273,7 @@ async fn run_project(
             commands::export(
                 args.format,
                 args.package,
+                args.hashes,
                 args.extras,
                 args.dev,
                 args.locked,

crates/uv/src/settings.rs

@@ -944,6 +944,7 @@ pub(crate) struct ExportSettings {
     pub(crate) package: Option<PackageName>,
     pub(crate) extras: ExtrasSpecification,
     pub(crate) dev: bool,
+    pub(crate) hashes: bool,
     pub(crate) locked: bool,
     pub(crate) frozen: bool,
     pub(crate) python: Option<String>,
@@ -963,6 +964,8 @@ impl ExportSettings {
             no_all_extras,
             dev,
             no_dev,
+            hashes,
+            no_hashes,
             locked,
             frozen,
             resolver,
@@ -979,6 +982,7 @@ impl ExportSettings {
                 extra.unwrap_or_default(),
             ),
             dev: flag(dev, no_dev).unwrap_or(true),
+            hashes: flag(hashes, no_hashes).unwrap_or(true),
             locked,
             frozen,
             python,

crates/uv/tests/export.rs

@@ -632,3 +632,41 @@ fn dev() -> Result<()> {
 
     Ok(())
 }
+
+#[test]
+fn no_hashes() -> Result<()> {
+    let context = TestContext::new("3.12");
+
+    let pyproject_toml = context.temp_dir.child("pyproject.toml");
+    pyproject_toml.write_str(
+        r#"
+        [project]
+        name = "project"
+        version = "0.1.0"
+        requires-python = ">=3.12"
+        dependencies = ["anyio==3.7.0"]
+
+        [build-system]
+        requires = ["setuptools>=42"]
+        build-backend = "setuptools.build_meta"
+        "#,
+    )?;
+
+    context.lock().assert().success();
+
+    uv_snapshot!(context.filters(), context.export().arg("--no-hashes"), @r###"
+    success: true
+    exit_code: 0
+    ----- stdout -----
+    # This file was autogenerated via `uv export`.
+    -e .
+    anyio==3.7.0
+    idna==3.6
+    sniffio==1.3.1
+
+    ----- stderr -----
+    Resolved 4 packages in [TIME]
+    "###);
+
+    Ok(())
+}

docs/reference/cli.md

@@ -1738,6 +1738,8 @@ uv export [OPTIONS]
 
 </dd><dt><code>--no-dev</code></dt><dd><p>Omit development dependencies</p>
 
+</dd><dt><code>--no-hashes</code></dt><dd><p>Omit hashes in the generated output</p>
+
 </dd><dt><code>--no-index</code></dt><dd><p>Ignore the registry index (e.g., PyPI), instead relying on direct URL dependencies and those provided via <code>--find-links</code></p>
 
 </dd><dt><code>--no-progress</code></dt><dd><p>Hide all progress outputs.</p>