feat: add comma value-delimiter to with argument in tool run args to allow for multiple arguments in with flag (#7909)

This is to address my own issue #7908 

## Summary

This change makes use of the `clap` value_delimiter parser to populate
the `with` `Vec<String>` which currently can either only be empty or
with 1 value for each `--with` flag.

This makes use of the current code structure but allows for multiple
arguments with a single `--with` flag.

<!-- What's the purpose of the change? What does it do, and why? -->

## Test Plan

Can be tested with the following CLI:

```bash
target/debug/uv tool run --with numpy,polars,matplotlib ipython -c "import numpy;import polars;import matplotlib;"
```

And former behavior of multiple `--with` flags are kept

```bash
target/debug/uv tool run --with numpy --with polars --with matplotlib ipython -c "import numpy;import polars;import matplotlib;"
```

<!-- How was it tested? -->

---------

Co-authored-by: Charlie Marsh <charlie.r.marsh@gmail.com>

crates/uv-cli/src/lib.rs

@@ -2571,7 +2571,7 @@ pub struct RunArgs {
     /// When used in a project, these dependencies will be layered on top of
     /// the project environment in a separate, ephemeral environment. These
     /// dependencies are allowed to conflict with those specified by the project.
-    #[arg(long)]
+    #[arg(long, value_delimiter = ',')]
     pub with: Vec<String>,
 
     /// Run with the given packages installed as editables.
@@ -2579,7 +2579,7 @@ pub struct RunArgs {
     /// When used in a project, these dependencies will be layered on top of
     /// the project environment in a separate, ephemeral environment. These
     /// dependencies are allowed to conflict with those specified by the project.
-    #[arg(long)]
+    #[arg(long, value_delimiter = ',')]
     pub with_editable: Vec<String>,
 
     /// Run with all packages listed in the given `requirements.txt` files.
@@ -2587,7 +2587,7 @@ pub struct RunArgs {
     /// The same environment semantics as `--with` apply.
     ///
     /// Using `pyproject.toml`, `setup.py`, or `setup.cfg` files is not allowed.
-    #[arg(long, value_parser = parse_maybe_file_path)]
+    #[arg(long, value_delimiter = ',', value_parser = parse_maybe_file_path)]
     pub with_requirements: Vec<Maybe<PathBuf>>,
 
     /// Run the command in an isolated virtual environment.
@@ -3373,7 +3373,7 @@ pub struct ToolRunArgs {
     pub from: Option<String>,
 
     /// Run with the given packages installed.
-    #[arg(long)]
+    #[arg(long, value_delimiter = ',')]
     pub with: Vec<String>,
 
     /// Run with the given packages installed as editables
@@ -3381,11 +3381,11 @@ pub struct ToolRunArgs {
     /// When used in a project, these dependencies will be layered on top of
     /// the uv tool's environment in a separate, ephemeral environment. These
     /// dependencies are allowed to conflict with those specified.
-    #[arg(long)]
+    #[arg(long, value_delimiter = ',')]
     pub with_editable: Vec<String>,
 
     /// Run with all packages listed in the given `requirements.txt` files.
-    #[arg(long, value_parser = parse_maybe_file_path)]
+    #[arg(long, value_delimiter = ',', value_parser = parse_maybe_file_path)]
     pub with_requirements: Vec<Maybe<PathBuf>>,
 
     /// Run the tool in an isolated virtual environment, ignoring any already-installed tools.
@@ -3441,11 +3441,11 @@ pub struct ToolInstallArgs {
     pub from: Option<String>,
 
     /// Include the following extra requirements.
-    #[arg(long)]
+    #[arg(long, value_delimiter = ',')]
     pub with: Vec<String>,
 
     /// Run all requirements listed in the given `requirements.txt` files.
-    #[arg(long, value_parser = parse_maybe_file_path)]
+    #[arg(long, value_delimiter = ',', value_parser = parse_maybe_file_path)]
     pub with_requirements: Vec<Maybe<PathBuf>>,
 
     #[command(flatten)]

crates/uv/tests/tool_run.rs

@@ -829,6 +829,324 @@ fn tool_run_without_output() {
     "###);
 }
 
+#[test]
+#[cfg(not(windows))]
+fn tool_run_csv_with() -> anyhow::Result<()> {
+    let context = TestContext::new("3.12").with_filtered_counts();
+    let tool_dir = context.temp_dir.child("tools");
+    let bin_dir = context.temp_dir.child("bin");
+
+    let anyio_local = context.temp_dir.child("src").child("anyio_local");
+    copy_dir_all(
+        context.workspace_root.join("scripts/packages/anyio_local"),
+        &anyio_local,
+    )?;
+
+    let black_editable = context.temp_dir.child("src").child("black_editable");
+    copy_dir_all(
+        context
+            .workspace_root
+            .join("scripts/packages/black_editable"),
+        &black_editable,
+    )?;
+
+    let pyproject_toml = context.temp_dir.child("pyproject.toml");
+    pyproject_toml.write_str(indoc! { r#"
+        [project]
+        name = "foo"
+        version = "1.0.0"
+        requires-python = ">=3.8"
+        dependencies = ["anyio", "sniffio==1.3.1"]
+        "#
+    })?;
+
+    let test_script = context.temp_dir.child("main.py");
+    test_script.write_str(indoc! { r"
+        import sniffio
+       "
+    })?;
+
+    // performs a tool run with CSV `with` flag
+    uv_snapshot!(context.filters(), context.tool_run()
+        .arg("--with")
+        .arg("numpy,pandas")
+        .arg("ipython")
+        .arg("-c")
+        .arg("import numpy; import pandas;")
+        .env("UV_TOOL_DIR", tool_dir.as_os_str())
+        .env("XDG_BIN_HOME", bin_dir.as_os_str()), @r###"
+    success: true
+    exit_code: 0
+    ----- stdout -----
+
+    ----- stderr -----
+    Resolved [N] packages in [TIME]
+    Prepared [N] packages in [TIME]
+    Installed [N] packages in [TIME]
+     + asttokens==2.4.1
+     + decorator==5.1.1
+     + executing==2.0.1
+     + ipython==8.22.2
+     + jedi==0.19.1
+     + matplotlib-inline==0.1.6
+     + numpy==1.26.4
+     + pandas==2.2.1
+     + parso==0.8.3
+     + pexpect==4.9.0
+     + prompt-toolkit==3.0.43
+     + ptyprocess==0.7.0
+     + pure-eval==0.2.2
+     + pygments==2.17.2
+     + python-dateutil==2.9.0.post0
+     + pytz==2024.1
+     + six==1.16.0
+     + stack-data==0.6.3
+     + traitlets==5.14.2
+     + tzdata==2024.1
+     + wcwidth==0.2.13
+    "###);
+
+    Ok(())
+}
+
+#[test]
+#[cfg(windows)]
+fn tool_run_csv_with() -> anyhow::Result<()> {
+    let context = TestContext::new("3.12").with_filtered_counts();
+    let tool_dir = context.temp_dir.child("tools");
+    let bin_dir = context.temp_dir.child("bin");
+
+    let anyio_local = context.temp_dir.child("src").child("anyio_local");
+    copy_dir_all(
+        context.workspace_root.join("scripts/packages/anyio_local"),
+        &anyio_local,
+    )?;
+
+    let black_editable = context.temp_dir.child("src").child("black_editable");
+    copy_dir_all(
+        context
+            .workspace_root
+            .join("scripts/packages/black_editable"),
+        &black_editable,
+    )?;
+
+    let pyproject_toml = context.temp_dir.child("pyproject.toml");
+    pyproject_toml.write_str(indoc! { r#"
+        [project]
+        name = "foo"
+        version = "1.0.0"
+        requires-python = ">=3.8"
+        dependencies = ["anyio", "sniffio==1.3.1"]
+        "#
+    })?;
+
+    let test_script = context.temp_dir.child("main.py");
+    test_script.write_str(indoc! { r"
+        import sniffio
+       "
+    })?;
+
+    // performs a tool run with CSV `with` flag
+    uv_snapshot!(context.filters(), context.tool_run()
+        .arg("--with")
+        .arg("numpy,pandas")
+        .arg("ipython")
+        .arg("-c")
+        .arg("import numpy; import pandas;")
+        .env("UV_TOOL_DIR", tool_dir.as_os_str())
+        .env("XDG_BIN_HOME", bin_dir.as_os_str()), @r###"
+    success: true
+    exit_code: 0
+    ----- stdout -----
+
+    ----- stderr -----
+    Resolved [N] packages in [TIME]
+    Prepared [N] packages in [TIME]
+    Installed [N] packages in [TIME]
+     + asttokens==2.4.1
+     + decorator==5.1.1
+     + executing==2.0.1
+     + ipython==8.22.2
+     + jedi==0.19.1
+     + matplotlib-inline==0.1.6
+     + numpy==1.26.4
+     + pandas==2.2.1
+     + parso==0.8.3
+     + prompt-toolkit==3.0.43
+     + pure-eval==0.2.2
+     + pygments==2.17.2
+     + python-dateutil==2.9.0.post0
+     + pytz==2024.1
+     + six==1.16.0
+     + stack-data==0.6.3
+     + traitlets==5.14.2
+     + wcwidth==0.2.13
+    "###);
+
+    Ok(())
+}
+
+#[test]
+#[cfg(not(windows))]
+fn tool_run_repeated_with() -> anyhow::Result<()> {
+    let context = TestContext::new("3.12").with_filtered_counts();
+    let tool_dir = context.temp_dir.child("tools");
+    let bin_dir = context.temp_dir.child("bin");
+
+    let anyio_local = context.temp_dir.child("src").child("anyio_local");
+    copy_dir_all(
+        context.workspace_root.join("scripts/packages/anyio_local"),
+        &anyio_local,
+    )?;
+
+    let black_editable = context.temp_dir.child("src").child("black_editable");
+    copy_dir_all(
+        context
+            .workspace_root
+            .join("scripts/packages/black_editable"),
+        &black_editable,
+    )?;
+
+    let pyproject_toml = context.temp_dir.child("pyproject.toml");
+    pyproject_toml.write_str(indoc! { r#"
+        [project]
+        name = "foo"
+        version = "1.0.0"
+        requires-python = ">=3.8"
+        dependencies = ["anyio", "sniffio==1.3.1"]
+        "#
+    })?;
+
+    let test_script = context.temp_dir.child("main.py");
+    test_script.write_str(indoc! { r"
+        import sniffio
+       "
+    })?;
+
+    // performs a tool run with repeated `with` flag
+    uv_snapshot!(context.filters(), context.tool_run()
+        .arg("--with")
+        .arg("numpy")
+        .arg("--with")
+        .arg("pandas")
+        .arg("ipython")
+        .arg("-c")
+        .arg("import numpy; import pandas;")
+        .env("UV_TOOL_DIR", tool_dir.as_os_str())
+        .env("XDG_BIN_HOME", bin_dir.as_os_str()), @r###"
+    success: true
+    exit_code: 0
+    ----- stdout -----
+
+    ----- stderr -----
+    Resolved [N] packages in [TIME]
+    Prepared [N] packages in [TIME]
+    Installed [N] packages in [TIME]
+     + asttokens==2.4.1
+     + decorator==5.1.1
+     + executing==2.0.1
+     + ipython==8.22.2
+     + jedi==0.19.1
+     + matplotlib-inline==0.1.6
+     + numpy==1.26.4
+     + pandas==2.2.1
+     + parso==0.8.3
+     + pexpect==4.9.0
+     + prompt-toolkit==3.0.43
+     + ptyprocess==0.7.0
+     + pure-eval==0.2.2
+     + pygments==2.17.2
+     + python-dateutil==2.9.0.post0
+     + pytz==2024.1
+     + six==1.16.0
+     + stack-data==0.6.3
+     + traitlets==5.14.2
+     + tzdata==2024.1
+     + wcwidth==0.2.13
+    "###);
+
+    Ok(())
+}
+
+#[test]
+#[cfg(windows)]
+fn tool_run_repeated_with() -> anyhow::Result<()> {
+    let context = TestContext::new("3.12").with_filtered_counts();
+    let tool_dir = context.temp_dir.child("tools");
+    let bin_dir = context.temp_dir.child("bin");
+
+    let anyio_local = context.temp_dir.child("src").child("anyio_local");
+    copy_dir_all(
+        context.workspace_root.join("scripts/packages/anyio_local"),
+        &anyio_local,
+    )?;
+
+    let black_editable = context.temp_dir.child("src").child("black_editable");
+    copy_dir_all(
+        context
+            .workspace_root
+            .join("scripts/packages/black_editable"),
+        &black_editable,
+    )?;
+
+    let pyproject_toml = context.temp_dir.child("pyproject.toml");
+    pyproject_toml.write_str(indoc! { r#"
+        [project]
+        name = "foo"
+        version = "1.0.0"
+        requires-python = ">=3.8"
+        dependencies = ["anyio", "sniffio==1.3.1"]
+        "#
+    })?;
+
+    let test_script = context.temp_dir.child("main.py");
+    test_script.write_str(indoc! { r"
+        import sniffio
+       "
+    })?;
+
+    // performs a tool run with repeated `with` flag
+    uv_snapshot!(context.filters(), context.tool_run()
+        .arg("--with")
+        .arg("numpy")
+        .arg("--with")
+        .arg("pandas")
+        .arg("ipython")
+        .arg("-c")
+        .arg("import numpy; import pandas;")
+        .env("UV_TOOL_DIR", tool_dir.as_os_str())
+        .env("XDG_BIN_HOME", bin_dir.as_os_str()), @r###"
+    success: true
+    exit_code: 0
+    ----- stdout -----
+
+    ----- stderr -----
+    Resolved [N] packages in [TIME]
+    Prepared [N] packages in [TIME]
+    Installed [N] packages in [TIME]
+     + asttokens==2.4.1
+     + decorator==5.1.1
+     + executing==2.0.1
+     + ipython==8.22.2
+     + jedi==0.19.1
+     + matplotlib-inline==0.1.6
+     + numpy==1.26.4
+     + pandas==2.2.1
+     + parso==0.8.3
+     + prompt-toolkit==3.0.43
+     + pure-eval==0.2.2
+     + pygments==2.17.2
+     + python-dateutil==2.9.0.post0
+     + pytz==2024.1
+     + six==1.16.0
+     + stack-data==0.6.3
+     + traitlets==5.14.2
+     + wcwidth==0.2.13
+    "###);
+
+    Ok(())
+}
+
 #[test]
 fn tool_run_with_editable() -> anyhow::Result<()> {
     let context = TestContext::new("3.12").with_filtered_counts();