fix(cli): use xdg config directory on macOS

fix: address feedback

cli/Cargo.toml

@@ -37,7 +37,6 @@ clap_complete_nushell.workspace = true
 ctor.workspace = true
 ctrlc.workspace = true
 dialoguer.workspace = true
-dirs.workspace = true
 filetime.workspace = true
 glob.workspace = true
 heck.workspace = true

cli/config/Cargo.toml

@@ -17,6 +17,6 @@ workspace = true
 
 [dependencies]
 anyhow.workspace = true
-dirs.workspace = true
+etcetera.workspace = true
 serde.workspace = true
 serde_json.workspace = true

cli/config/src/lib.rs

@@ -2,7 +2,8 @@
 
 use std::{env, fs, path::PathBuf};
 
-use anyhow::{anyhow, Context, Result};
+use anyhow::{Context, Result};
+use etcetera::BaseStrategy as _;
 use serde::{Deserialize, Serialize};
 use serde_json::Value;
 
@@ -38,8 +39,24 @@ impl Config {
             return Ok(Some(xdg_path));
         }
 
-        let legacy_path = dirs::home_dir()
-            .ok_or_else(|| anyhow!("Cannot determine home directory"))?
+        if cfg!(target_os = "macos") {
+            let legacy_apple_path = etcetera::base_strategy::Apple::new()?
+                .data_dir() // `$HOME/Library/Application Support/`
+                .join("tree-sitter")
+                .join("config.json");
+            if legacy_apple_path.is_file() {
+                fs::create_dir_all(xdg_path.parent().unwrap())?;
+                fs::rename(&legacy_apple_path, &xdg_path)?;
+                println!(
+                    "Warning: your config.json file has been automatically migrated from \"{}\" to \"{}\"",
+                    legacy_apple_path.display(),
+                    xdg_path.display()
+                );
+                return Ok(Some(xdg_path));
+            }
+        }
+
+        let legacy_path = etcetera::home_dir()?
             .join(".tree-sitter")
             .join("config.json");
         if legacy_path.is_file() {
@@ -50,8 +67,8 @@ impl Config {
     }
 
     fn xdg_config_file() -> Result<PathBuf> {
-        let xdg_path = dirs::config_dir()
-            .ok_or_else(|| anyhow!("Cannot determine config directory"))?
+        let xdg_path = etcetera::choose_base_strategy()?
+            .config_dir()
             .join("tree-sitter")
             .join("config.json");
         Ok(xdg_path)
@@ -63,7 +80,7 @@ impl Config {
     ///   - Location specified by the path parameter if provided
     ///   - `$TREE_SITTER_DIR/config.json`, if the `TREE_SITTER_DIR` environment variable is set
     ///   - `tree-sitter/config.json` in your default user configuration directory, as determined by
-    ///     [`dirs::config_dir`](https://docs.rs/dirs/*/dirs/fn.config_dir.html)
+    ///     [`etcetera::choose_base_strategy`](https://docs.rs/etcetera/*/etcetera/#basestrategy)
     ///   - `$HOME/.tree-sitter/config.json` as a fallback from where tree-sitter _used_ to store
     ///     its configuration
     pub fn load(path: Option<PathBuf>) -> Result<Self> {

cli/loader/Cargo.toml

@@ -26,7 +26,7 @@ default = ["tree-sitter-highlight", "tree-sitter-tags"]
 [dependencies]
 anyhow.workspace = true
 cc.workspace = true
-dirs.workspace = true
+etcetera.workspace = true
 fs4.workspace = true
 indoc.workspace = true
 lazy_static.workspace = true

cli/loader/src/lib.rs

@@ -20,6 +20,7 @@ use std::{
 #[cfg(any(feature = "tree-sitter-highlight", feature = "tree-sitter-tags"))]
 use anyhow::Error;
 use anyhow::{anyhow, Context, Result};
+use etcetera::BaseStrategy as _;
 use fs4::fs_std::FileExt;
 use indoc::indoc;
 use lazy_static::lazy_static;
@@ -258,7 +259,7 @@ where
     D: Deserializer<'de>,
 {
     let paths = Vec::<PathBuf>::deserialize(deserializer)?;
-    let Some(home) = dirs::home_dir() else {
+    let Ok(home) = etcetera::home_dir() else {
         return Ok(paths);
     };
     let standardized = paths
@@ -281,7 +282,7 @@ fn standardize_path(path: PathBuf, home: &Path) -> PathBuf {
 impl Config {
     #[must_use]
     pub fn initial() -> Self {
-        let home_dir = dirs::home_dir().expect("Cannot determine home directory");
+        let home_dir = etcetera::home_dir().expect("Cannot determine home directory");
         Self {
             parser_directories: vec![
                 home_dir.join("github"),
@@ -377,12 +378,22 @@ unsafe impl Sync for Loader {}
 
 impl Loader {
     pub fn new() -> Result<Self> {
-        let parser_lib_path = match env::var("TREE_SITTER_LIBDIR") {
-            Ok(path) => PathBuf::from(path),
-            _ => dirs::cache_dir()
-                .ok_or_else(|| anyhow!("Cannot determine cache directory"))?
+        let parser_lib_path = if let Ok(path) = env::var("TREE_SITTER_LIBDIR") {
+            PathBuf::from(path)
+        } else {
+            if cfg!(target_os = "macos") {
+                let legacy_apple_path = etcetera::base_strategy::Apple::new()?
+                    .cache_dir() // `$HOME/Library/Caches/`
+                    .join("tree-sitter");
+                if legacy_apple_path.exists() && legacy_apple_path.is_dir() {
+                    std::fs::remove_dir_all(legacy_apple_path)?;
+                }
+            }
+
+            etcetera::choose_base_strategy()?
+                .cache_dir()
                 .join("tree-sitter")
-                .join("lib"),
+                .join("lib")
         };
         Ok(Self::with_parser_lib_path(parser_lib_path))
     }
@@ -733,8 +744,8 @@ impl Loader {
                 .join("lock")
                 .join(format!("{}.lock", config.name))
         } else {
-            dirs::cache_dir()
-                .ok_or_else(|| anyhow!("Cannot determine cache directory"))?
+            etcetera::choose_base_strategy()?
+                .cache_dir()
                 .join("tree-sitter")
                 .join("lock")
                 .join(format!("{}.lock", config.name))