Eliminate dependencies on directores and dirs-sys (#8048)

Migrate all directory related logic to `etcetera`, eliminated two
dependecies.

Cargo.toml

@@ -91,8 +91,6 @@ csv = { version = "1.3.0" }
 ctrlc = { version = "3.4.5" }
 dashmap = { version = "6.1.0" }
 data-encoding = { version = "2.6.0" }
-directories = { version = "5.0.1" }
-dirs-sys = { version = "0.4.1" }
 dunce = { version = "1.0.5" }
 either = { version = "1.13.0" }
 encoding_rs_io = { version = "0.1.7" }

crates/uv-dirs/Cargo.toml

@@ -19,6 +19,4 @@ workspace = true
 [dependencies]
 uv-static = { workspace = true }
 
-dirs-sys = { workspace = true }
-directories = { workspace = true }
 etcetera = { workspace = true }

crates/uv-dirs/src/lib.rs

@@ -1,4 +1,4 @@
-use std::path::PathBuf;
+use std::{ffi::OsString, path::PathBuf};
 
 use etcetera::BaseStrategy;
 
@@ -20,19 +20,15 @@ use uv_static::EnvVars;
 pub fn user_executable_directory(override_variable: Option<&'static str>) -> Option<PathBuf> {
     override_variable
         .and_then(std::env::var_os)
-        .and_then(dirs_sys::is_absolute_path)
-        .or_else(|| std::env::var_os(EnvVars::XDG_BIN_HOME).and_then(dirs_sys::is_absolute_path))
+        .and_then(parse_path)
+        .or_else(|| std::env::var_os(EnvVars::XDG_BIN_HOME).and_then(parse_path))
         .or_else(|| {
             std::env::var_os(EnvVars::XDG_DATA_HOME)
-                .and_then(dirs_sys::is_absolute_path)
+                .and_then(parse_path)
                 .map(|path| path.join("../bin"))
         })
         .or_else(|| {
-            // See https://github.com/dirs-dev/dirs-rs/blob/50b50f31f3363b7656e5e63b3fa1060217cbc844/src/win.rs#L5C58-L5C78
-            #[cfg(windows)]
-            let home_dir = dirs_sys::known_folder_profile();
-            #[cfg(not(windows))]
-            let home_dir = dirs_sys::home_dir();
+            let home_dir = etcetera::home_dir().ok();
             home_dir.map(|path| path.join(".local").join("bin"))
         })
 }
@@ -51,7 +47,16 @@ pub fn user_cache_dir() -> Option<PathBuf> {
 /// Uses `/Users/user/Library/Application Support/uv` on macOS, in contrast to the new preference
 /// for using the XDG directories on all Unix platforms.
 pub fn legacy_user_cache_dir() -> Option<PathBuf> {
-    directories::ProjectDirs::from("", "", "uv").map(|dirs| dirs.cache_dir().to_path_buf())
+    etcetera::base_strategy::choose_native_strategy()
+        .ok()
+        .map(|dirs| dirs.cache_dir().join("uv"))
+        .map(|dir| {
+            if cfg!(windows) {
+                dir.join("cache")
+            } else {
+                dir
+            }
+        })
 }
 
 /// Returns an appropriate user-level directory for storing application state.
@@ -68,5 +73,18 @@ pub fn user_state_dir() -> Option<PathBuf> {
 /// Uses `/Users/user/Library/Application Support/uv` on macOS, in contrast to the new preference
 /// for using the XDG directories on all Unix platforms.
 pub fn legacy_user_state_dir() -> Option<PathBuf> {
-    directories::ProjectDirs::from("", "", "uv").map(|dirs| dirs.data_dir().to_path_buf())
+    etcetera::base_strategy::choose_native_strategy()
+        .ok()
+        .map(|dirs| dirs.data_dir().join("uv"))
+        .map(|dir| if cfg!(windows) { dir.join("data") } else { dir })
+}
+
+/// Return a [`PathBuf`] if the given [`OsString`] is an absolute path.
+fn parse_path(path: OsString) -> Option<PathBuf> {
+    let path = PathBuf::from(path);
+    if path.is_absolute() {
+        Some(path)
+    } else {
+        None
+    }
 }

crates/uv-settings/Cargo.toml

@@ -32,7 +32,7 @@ uv-static = { workspace = true }
 uv-warnings = { workspace = true }
 
 clap = { workspace = true }
-dirs-sys = { workspace = true }
+etcetera = { workspace = true }
 fs-err = { workspace = true }
 schemars = { workspace = true, optional = true }
 serde = { workspace = true }

crates/uv-settings/src/lib.rs

@@ -2,6 +2,7 @@ use std::env;
 use std::ops::Deref;
 use std::path::{Path, PathBuf};
 
+use etcetera::BaseStrategy;
 use tracing::debug;
 
 use uv_fs::Simplified;
@@ -176,23 +177,12 @@ impl From<Options> for FilesystemOptions {
 
 /// Returns the path to the user configuration directory.
 ///
-/// This is similar to the `config_dir()` returned by the `dirs` crate, but it uses the
-/// `XDG_CONFIG_HOME` environment variable on both Linux _and_ macOS, rather than the
-/// `Application Support` directory on macOS.
+/// On Windows, use, e.g., C:\Users\Alice\AppData\Roaming
+/// On Linux and macOS, use `XDG_CONFIG_HOME` or $HOME/.config, e.g., /home/alice/.config.
 fn user_config_dir() -> Option<PathBuf> {
-    // On Windows, use, e.g., `C:\Users\Alice\AppData\Roaming`.
-    #[cfg(windows)]
-    {
-        dirs_sys::known_folder_roaming_app_data()
-    }
-
-    // On Linux and macOS, use, e.g., `/home/alice/.config`.
-    #[cfg(not(windows))]
-    {
-        env::var_os(EnvVars::XDG_CONFIG_HOME)
-            .and_then(dirs_sys::is_absolute_path)
-            .or_else(|| dirs_sys::home_dir().map(|path| path.join(".config")))
-    }
+    etcetera::choose_base_strategy()
+        .map(|dirs| dirs.config_dir())
+        .ok()
 }
 
 #[cfg(not(windows))]

crates/uv-tool/src/lib.rs

@@ -1,5 +1,4 @@
 use core::fmt;
-
 use fs_err as fs;
 
 use uv_dirs::user_executable_directory;