diff --git a/crates/uv/tests/it/license.rs b/crates/uv/tests/it/license.rs
index ecfa623b2032..58558d3198e8 100644
--- a/crates/uv/tests/it/license.rs
+++ b/crates/uv/tests/it/license.rs
@@ -1,5 +1,4 @@
 use anyhow::Result;
-use assert_cmd::assert::OutputAssertExt;
 use assert_fs::prelude::*;
 use indoc::formatdoc;
 use url::Url;
@@ -150,3 +149,401 @@ fn nested_dependencies() -> Result<()> {
 
     Ok(())
 }
+
+#[test]
+fn nested_platform_dependencies() -> 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 = [
+            "jupyter-client"
+        ]
+    "#,
+    )?;
+
+    uv_snapshot!(context.filters(), context.license().arg("--python-platform").arg("linux"), @r"
+    success: true
+    exit_code: 0
+    ----- stdout -----
+    project: 0.1.0, Unknown License
+    jupyter-client: 8.6.1, BSD License
+    jupyter-core: 5.7.2, BSD License
+    platformdirs: 4.2.0, MIT License
+    traitlets: 5.14.2, BSD License
+    python-dateutil: 2.9.0.post0, BSD License, Apache Software License
+    six: 1.16.0, MIT License
+    pyzmq: 25.1.2, GNU Library or Lesser General Public License (LGPL), BSD License
+    tornado: 6.4, Apache Software License
+
+    ----- stderr -----
+    Resolved 12 packages in [TIME]
+    "
+    );
+
+    uv_snapshot!(context.filters(), context.license().arg("--universal"), @r"
+    success: true
+    exit_code: 0
+    ----- stdout -----
+    project: 0.1.0, Unknown License
+    jupyter-client: 8.6.1, BSD License
+    jupyter-core: 5.7.2, BSD License
+    platformdirs: 4.2.0, MIT License
+    pywin32: 306, Python Software Foundation License
+    traitlets: 5.14.2, BSD License
+    python-dateutil: 2.9.0.post0, BSD License, Apache Software License
+    six: 1.16.0, MIT License
+    pyzmq: 25.1.2, GNU Library or Lesser General Public License (LGPL), BSD License
+    cffi: 1.16.0, MIT License
+    pycparser: 2.21, BSD License
+    tornado: 6.4, Apache Software License
+
+    ----- stderr -----
+    Resolved 12 packages in [TIME]
+    "
+    );
+
+    // `uv tree` should update the lockfile
+    let lock = context.read("uv.lock");
+    assert!(!lock.is_empty());
+
+    Ok(())
+}
+
+#[test]
+fn frozen() -> 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"]
+    "#,
+    )?;
+
+    uv_snapshot!(context.filters(), context.license().arg("--universal"), @r"
+    success: true
+    exit_code: 0
+    ----- stdout -----
+    project: 0.1.0, Unknown License
+    anyio: 4.3.0, MIT License
+    idna: 3.6, BSD License
+    sniffio: 1.3.1, MIT License, Apache Software License
+
+    ----- stderr -----
+    Resolved 4 packages in [TIME]
+    "
+    );
+
+    // `uv tree` should update the lockfile
+    let lock = context.read("uv.lock");
+    assert!(!lock.is_empty());
+
+    // Update the project dependencies.
+    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 = ["iniconfig"]
+    "#,
+    )?;
+
+    // Running with `--frozen` should show the stale tree.
+    uv_snapshot!(context.filters(), context.license().arg("--frozen"), @r"
+    success: true
+    exit_code: 0
+    ----- stdout -----
+    project: 0.1.0, Unknown License
+    anyio: 4.3.0, MIT License
+    idna: 3.6, BSD License
+    sniffio: 1.3.1, MIT License, Apache Software License
+
+    ----- stderr -----
+    "
+    );
+
+    Ok(())
+}
+
+#[test]
+fn platform_dependencies() -> 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 = [
+            "black"
+        ]
+    "#,
+    )?;
+
+    // When `--universal` is _not_ provided, `colorama` should _not_ be included.
+    #[cfg(not(windows))]
+    uv_snapshot!(context.filters(), context.license(), @r"
+    success: true
+    exit_code: 0
+    ----- stdout -----
+    project: 0.1.0, Unknown License
+    black: 24.3.0, MIT License
+    click: 8.1.7, BSD License
+    mypy-extensions: 1.0.0, MIT License
+    packaging: 24.0, Apache Software License, BSD License
+    pathspec: 0.12.1, Mozilla Public License 2.0 (MPL 2.0)
+    platformdirs: 4.2.0, MIT License
+
+    ----- stderr -----
+    Resolved 8 packages in [TIME]
+    ");
+
+    // Unless `--python-platform` is set to `windows`, in which case it should be included.
+    uv_snapshot!(context.filters(), context.license().arg("--python-platform").arg("windows"), @r"
+    success: true
+    exit_code: 0
+    ----- stdout -----
+    project: 0.1.0, Unknown License
+    black: 24.3.0, MIT License
+    click: 8.1.7, BSD License
+    colorama: 0.4.6, BSD License
+    mypy-extensions: 1.0.0, MIT License
+    packaging: 24.0, Apache Software License, BSD License
+    pathspec: 0.12.1, Mozilla Public License 2.0 (MPL 2.0)
+    platformdirs: 4.2.0, MIT License
+
+    ----- stderr -----
+    Resolved 8 packages in [TIME]
+    ");
+
+    // When `--universal` is _not_ provided, should include `colorama`, even though it's only
+    // included on Windows.
+    uv_snapshot!(context.filters(), context.license().arg("--universal"), @r"
+    success: true
+    exit_code: 0
+    ----- stdout -----
+    project: 0.1.0, Unknown License
+    black: 24.3.0, MIT License
+    click: 8.1.7, BSD License
+    colorama: 0.4.6, BSD License
+    mypy-extensions: 1.0.0, MIT License
+    packaging: 24.0, Apache Software License, BSD License
+    pathspec: 0.12.1, Mozilla Public License 2.0 (MPL 2.0)
+    platformdirs: 4.2.0, MIT License
+
+    ----- stderr -----
+    Resolved 8 packages in [TIME]
+    "
+    );
+
+    // `uv tree` should update the lockfile
+    let lock = context.read("uv.lock");
+    assert!(!lock.is_empty());
+
+    Ok(())
+}
+
+#[test]
+fn repeated_dependencies() -> 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 < 2 ; sys_platform == 'win32'",
+            "anyio > 2 ; sys_platform == 'linux'",
+        ]
+    "#,
+    )?;
+
+    // Should include both versions of `anyio`, which have different dependencies.
+    uv_snapshot!(context.filters(), context.license().arg("--universal"), @r"
+    success: true
+    exit_code: 0
+    ----- stdout -----
+    project: 0.1.0, Unknown License
+    anyio: 1.4.0, MIT License
+    async-generator: 1.10, MIT License, Apache Software License
+    idna: 3.6, BSD License
+    sniffio: 1.3.1, MIT License, Apache Software License
+    anyio: 4.3.0, MIT License
+
+    ----- stderr -----
+    Resolved 6 packages in [TIME]
+    "
+    );
+
+    // `uv tree` should update the lockfile
+    let lock = context.read("uv.lock");
+    assert!(!lock.is_empty());
+
+    Ok(())
+}
+
+/// In this case, a package is included twice at the same version, but pointing to different direct
+/// URLs.
+#[test]
+fn repeated_version() -> Result<()> {
+    let context = TestContext::new("3.12");
+
+    let v1 = context.temp_dir.child("v1");
+    fs_err::create_dir_all(&v1)?;
+    let pyproject_toml = v1.child("pyproject.toml");
+    pyproject_toml.write_str(
+        r#"
+        [project]
+        name = "dependency"
+        version = "0.0.1"
+        requires-python = ">=3.12"
+        dependencies = ["anyio==3.7.0"]
+        "#,
+    )?;
+
+    let v2 = context.temp_dir.child("v2");
+    fs_err::create_dir_all(&v2)?;
+    let pyproject_toml = v2.child("pyproject.toml");
+    pyproject_toml.write_str(
+        r#"
+        [project]
+        name = "dependency"
+        version = "0.0.1"
+        requires-python = ">=3.12"
+        dependencies = ["anyio==3.0.0"]
+        "#,
+    )?;
+
+    let pyproject_toml = context.temp_dir.child("pyproject.toml");
+    pyproject_toml.write_str(&formatdoc! {
+        r#"
+        [project]
+        name = "project"
+        version = "0.1.0"
+        requires-python = ">=3.12"
+        dependencies = [
+          "dependency @ {} ; sys_platform == 'darwin'",
+          "dependency @ {} ; sys_platform != 'darwin'",
+        ]
+        "#,
+        Url::from_file_path(context.temp_dir.join("v1")).unwrap(),
+        Url::from_file_path(context.temp_dir.join("v2")).unwrap(),
+    })?;
+
+    uv_snapshot!(context.filters(), context.license().arg("--universal"), @r"
+    success: true
+    exit_code: 0
+    ----- stdout -----
+    project: 0.1.0, Unknown License
+    dependency: 0.0.1, Unknown License
+    anyio: 3.7.0, MIT License
+    idna: 3.6, BSD License
+    sniffio: 1.3.1, MIT License, Apache Software License
+    dependency: 0.0.1, Unknown License
+    anyio: 3.0.0, MIT License
+
+    ----- stderr -----
+    Resolved 7 packages in [TIME]
+    "
+    );
+
+    // `uv tree` should update the lockfile
+    let lock = context.read("uv.lock");
+    assert!(!lock.is_empty());
+
+    Ok(())
+}
+
+#[test]
+fn workspace_dev() -> 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"]
+
+        [dependency-groups]
+        dev = ["child"]
+
+        [tool.uv.workspace]
+        members = ["child"]
+
+        [tool.uv.sources]
+        child = { workspace = true }
+    "#,
+    )?;
+
+    let child = context.temp_dir.child("child");
+    let pyproject_toml = child.child("pyproject.toml");
+    pyproject_toml.write_str(
+        r#"
+        [project]
+        name = "child"
+        version = "0.1.0"
+        requires-python = ">=3.12"
+        dependencies = ["iniconfig"]
+    "#,
+    )?;
+
+    uv_snapshot!(context.filters(), context.license().arg("--universal"), @r"
+    success: true
+    exit_code: 0
+    ----- stdout -----
+    project: 0.1.0, Unknown License
+    anyio: 4.3.0, MIT License
+    idna: 3.6, BSD License
+    sniffio: 1.3.1, MIT License, Apache Software License
+    child: 0.1.0, Unknown License (group: dev)
+    iniconfig: 2.0.0, MIT License
+
+    ----- stderr -----
+    Resolved 6 packages in [TIME]
+    "
+    );
+
+    // Under `--no-dev`, the member should still be included, since we show the entire workspace.
+    // But it shouldn't be considered a dependency of the root.
+    uv_snapshot!(context.filters(), context.license().arg("--universal").arg("--no-dev"), @r"
+    success: true
+    exit_code: 0
+    ----- stdout -----
+    child: 0.1.0, Unknown License
+    iniconfig: 2.0.0, MIT License
+    project: 0.1.0, Unknown License
+    anyio: 4.3.0, MIT License
+    idna: 3.6, BSD License
+    sniffio: 1.3.1, MIT License, Apache Software License
+
+    ----- stderr -----
+    Resolved 6 packages in [TIME]
+    "
+    );
+
+    // `uv tree` should update the lockfile
+    let lock = context.read("uv.lock");
+    assert!(!lock.is_empty());
+
+    Ok(())
+}