feat: add environment variable to disable progress output

The changes in this commit add a new environment variable `UV_NO_PROGRESS` that allows users to disable progress output, such as spinners and progress bars, in the uv-cli tool. This feature is useful for users who prefer a more minimal or non-interactive output, or for use in environments where progress output may not be desirable or supported.

The changes include:

- Adding the `UV_NO_PROGRESS` environment variable to the `EnvVars` struct in `crates/uv-static/src/env_vars.rs`.
- Updating the `GlobalArgs` struct in `crates/uv-cli/src/lib.rs` to include a new `no_progress` field that is bound to the `UV_NO_PROGRESS` environment variable.
- Adding documentation for the new `UV_NO_PROGRESS` environment variable in `docs/configuration/environment.md`.

crates/uv-cli/src/lib.rs

@@ -232,7 +232,7 @@ pub struct GlobalArgs {
     /// Hide all progress outputs.
     ///
     /// For example, spinners or progress bars.
-    #[arg(global = true, long)]
+    #[arg(global = true, long, env = EnvVars::UV_NO_PROGRESS, value_parser = clap::builder::BoolishValueParser::new(), overrides_with("no_progress"))]
     pub no_progress: bool,
 
     /// Change to the given directory prior to running the command.

crates/uv-static/src/env_vars.rs

@@ -277,6 +277,9 @@ impl EnvVars {
     /// Disables colored output (takes precedence over `FORCE_COLOR`).
     pub const NO_COLOR: &'static str = "NO_COLOR";
 
+    /// Disables all progress output. For example, spinners and progress bars.
+    pub const UV_NO_PROGRESS: &'static str = "UV_NO_PROGRESS";
+
     /// Forces colored output regardless of terminal support.
     pub const FORCE_COLOR: &'static str = "FORCE_COLOR";
 

crates/uv/tests/it/help.rs

@@ -54,7 +54,7 @@ fn help() {
           --native-tls                 Whether to load TLS certificates from the platform's native
                                        certificate store [env: UV_NATIVE_TLS=]
           --offline                    Disable network access
-          --no-progress                Hide all progress outputs
+          --no-progress                Hide all progress outputs [env: UV_NO_PROGRESS=]
           --directory <DIRECTORY>      Change to the given directory prior to running the command
           --project <PROJECT>          Run the command within the given project directory
           --config-file <CONFIG_FILE>  The path to a `uv.toml` file to use for configuration [env:
@@ -123,7 +123,7 @@ fn help_flag() {
           --native-tls                 Whether to load TLS certificates from the platform's native
                                        certificate store [env: UV_NATIVE_TLS=]
           --offline                    Disable network access
-          --no-progress                Hide all progress outputs
+          --no-progress                Hide all progress outputs [env: UV_NO_PROGRESS=]
           --directory <DIRECTORY>      Change to the given directory prior to running the command
           --project <PROJECT>          Run the command within the given project directory
           --config-file <CONFIG_FILE>  The path to a `uv.toml` file to use for configuration [env:
@@ -515,6 +515,8 @@ fn help_subsubcommand() {
               
               For example, spinners or progress bars.
 
+              [env: UV_NO_PROGRESS=]
+
           --directory <DIRECTORY>
               Change to the given directory prior to running the command.
               
@@ -603,7 +605,7 @@ fn help_flag_subcommand() {
           --native-tls                 Whether to load TLS certificates from the platform's native
                                        certificate store [env: UV_NATIVE_TLS=]
           --offline                    Disable network access
-          --no-progress                Hide all progress outputs
+          --no-progress                Hide all progress outputs [env: UV_NO_PROGRESS=]
           --directory <DIRECTORY>      Change to the given directory prior to running the command
           --project <PROJECT>          Run the command within the given project directory
           --config-file <CONFIG_FILE>  The path to a `uv.toml` file to use for configuration [env:

docs/configuration/environment.md

@@ -151,5 +151,6 @@ In addition, uv respects the following environment variables:
   least-recent non-EOL macOS version at time of writing.
 - `NO_COLOR`: Disable colors. Takes precedence over `FORCE_COLOR`. See
   [no-color.org](https://no-color.org).
+- `UV_NO_PROGRESS`: Disable progress indicators like spinners and progress bars.
 - `FORCE_COLOR`: Enforce colors regardless of TTY support. See
   [force-color.org](https://force-color.org).