Ignore origin when comparing installed tools (#16055)

## Summary

This field gets dropped when you serialize and deserialize, so we should
ignore it when comparing indexes.

Closes https://github.com/astral-sh/uv/issues/16051.

crates/uv-distribution-types/src/index.rs

@@ -48,7 +48,7 @@ impl IndexCacheControl {
     }
 }
 
-#[derive(Debug, Clone, Hash, Eq, PartialEq, Ord, PartialOrd, Serialize, Deserialize)]
+#[derive(Debug, Clone, Serialize, Deserialize)]
 #[cfg_attr(feature = "schemars", derive(schemars::JsonSchema))]
 #[serde(rename_all = "kebab-case")]
 pub struct Index {
@@ -156,6 +156,92 @@ pub struct Index {
     pub cache_control: Option<IndexCacheControl>,
 }
 
+impl PartialEq for Index {
+    fn eq(&self, other: &Self) -> bool {
+        let Self {
+            name,
+            url,
+            explicit,
+            default,
+            origin: _,
+            format,
+            publish_url,
+            authenticate,
+            ignore_error_codes,
+            cache_control,
+        } = self;
+        *url == other.url
+            && *name == other.name
+            && *explicit == other.explicit
+            && *default == other.default
+            && *format == other.format
+            && *publish_url == other.publish_url
+            && *authenticate == other.authenticate
+            && *ignore_error_codes == other.ignore_error_codes
+            && *cache_control == other.cache_control
+    }
+}
+
+impl Eq for Index {}
+
+impl PartialOrd for Index {
+    fn partial_cmp(&self, other: &Self) -> Option<std::cmp::Ordering> {
+        Some(self.cmp(other))
+    }
+}
+
+impl Ord for Index {
+    fn cmp(&self, other: &Self) -> std::cmp::Ordering {
+        let Self {
+            name,
+            url,
+            explicit,
+            default,
+            origin: _,
+            format,
+            publish_url,
+            authenticate,
+            ignore_error_codes,
+            cache_control,
+        } = self;
+        url.cmp(&other.url)
+            .then_with(|| name.cmp(&other.name))
+            .then_with(|| explicit.cmp(&other.explicit))
+            .then_with(|| default.cmp(&other.default))
+            .then_with(|| format.cmp(&other.format))
+            .then_with(|| publish_url.cmp(&other.publish_url))
+            .then_with(|| authenticate.cmp(&other.authenticate))
+            .then_with(|| ignore_error_codes.cmp(&other.ignore_error_codes))
+            .then_with(|| cache_control.cmp(&other.cache_control))
+    }
+}
+
+impl std::hash::Hash for Index {
+    fn hash<H: std::hash::Hasher>(&self, state: &mut H) {
+        let Self {
+            name,
+            url,
+            explicit,
+            default,
+            origin: _,
+            format,
+            publish_url,
+            authenticate,
+            ignore_error_codes,
+            cache_control,
+        } = self;
+        url.hash(state);
+        name.hash(state);
+        explicit.hash(state);
+        default.hash(state);
+        format.hash(state);
+        publish_url.hash(state);
+        authenticate.hash(state);
+        ignore_error_codes.hash(state);
+        cache_control.hash(state);
+    }
+}
+
 #[derive(
     Default,
     Debug,

crates/uv/tests/it/tool_install.rs

@@ -3906,7 +3906,6 @@ fn tool_install_default_credentials() -> Result<()> {
                 sys.argv[0] = sys.argv[0][:-4]
             sys.exit(main())
         "###);
-
     });
 
     insta::with_settings!({
@@ -4094,6 +4093,116 @@ fn tool_install_with_executables_from_no_entrypoints() {
     "###);
 }
 
+#[test]
+fn tool_install_find_links() {
+    let context = TestContext::new("3.13").with_filtered_exe_suffix();
+    let tool_dir = context.temp_dir.child("tools");
+    let bin_dir = context.temp_dir.child("bin");
+
+    // Run with `--find-links`.
+    uv_snapshot!(context.filters(), context.tool_run()
+        .arg("--find-links")
+        .arg(context.workspace_root.join("scripts/links/"))
+        .arg("basic-app")
+        .env(EnvVars::UV_TOOL_DIR, tool_dir.as_os_str())
+        .env(EnvVars::XDG_BIN_HOME, bin_dir.as_os_str()), @r"
+    success: true
+    exit_code: 0
+    ----- stdout -----
+    Hello from basic-app!
+
+    ----- stderr -----
+    Resolved 1 package in [TIME]
+    Prepared 1 package in [TIME]
+    Installed 1 package in [TIME]
+     + basic-app==0.1.0
+    ");
+
+    // Install with `--find-links`.
+    uv_snapshot!(context.filters(), context.tool_install()
+        .arg("--find-links")
+        .arg(context.workspace_root.join("scripts/links/"))
+        .arg("basic-app")
+        .env(EnvVars::UV_TOOL_DIR, tool_dir.as_os_str())
+        .env(EnvVars::XDG_BIN_HOME, bin_dir.as_os_str())
+        .env(EnvVars::PATH, bin_dir.as_os_str()), @r"
+    success: true
+    exit_code: 0
+    ----- stdout -----
+
+    ----- stderr -----
+    Resolved 1 package in [TIME]
+    Installed 1 package in [TIME]
+     + basic-app==0.1.0
+    Installed 1 executable: basic-app
+    ");
+
+    tool_dir
+        .child("basic-app")
+        .assert(predicate::path::is_dir());
+    tool_dir
+        .child("basic-app")
+        .child("uv-receipt.toml")
+        .assert(predicate::path::exists());
+
+    let executable = bin_dir.child(format!("basic-app{}", std::env::consts::EXE_SUFFIX));
+    assert!(executable.exists());
+
+    // On Windows, we can't snapshot an executable file.
+    #[cfg(not(windows))]
+    insta::with_settings!({
+        filters => context.filters(),
+    }, {
+        // Should run basic-app in the virtual environment
+        assert_snapshot!(fs_err::read_to_string(executable).unwrap(), @r#"
+        #![TEMP_DIR]/tools/basic-app/bin/python
+        # -*- coding: utf-8 -*-
+        import sys
+        from basic_app import main
+        if __name__ == "__main__":
+            if sys.argv[0].endswith("-script.pyw"):
+                sys.argv[0] = sys.argv[0][:-11]
+            elif sys.argv[0].endswith(".exe"):
+                sys.argv[0] = sys.argv[0][:-4]
+            sys.exit(main())
+        "#);
+    });
+
+    // Run the installed version with `--find-links` on the CLI again.
+    uv_snapshot!(context.filters(), context.tool_run()
+        .arg("--offline")
+        .arg("--find-links")
+        .arg(context.workspace_root.join("scripts/links/"))
+        .arg("basic-app")
+        .env(EnvVars::UV_TOOL_DIR, tool_dir.as_os_str())
+        .env(EnvVars::XDG_BIN_HOME, bin_dir.as_os_str()), @r"
+    success: true
+    exit_code: 0
+    ----- stdout -----
+    Hello from basic-app!
+
+    ----- stderr -----
+    ");
+
+    // Run the installed version without `--find-links`.
+    uv_snapshot!(context.filters(), context.tool_run()
+        .arg("--offline")
+        .arg("basic-app")
+        .env(EnvVars::UV_TOOL_DIR, tool_dir.as_os_str())
+        .env(EnvVars::XDG_BIN_HOME, bin_dir.as_os_str()), @r"
+    success: false
+    exit_code: 1
+    ----- stdout -----
+
+    ----- stderr -----
+      × No solution found when resolving tool dependencies:
+      ╰─▶ Because only basic-app==0.1 is available and basic-app==0.1 needs to be downloaded from a registry, we can conclude that all versions of basic-app cannot be used.
+          And because you require basic-app, we can conclude that your requirements are unsatisfiable.
+
+          hint: Packages were unavailable because the network was disabled. When the network is disabled, registry packages may only be read from the cache.
+    ");
+}
+
 #[test]
 fn tool_install_python_platform() {
     let context = TestContext::new("3.12")