new: remove dirs, replace with simple module

Cargo.lock

@@ -1463,27 +1463,6 @@ dependencies = [
  "ctutils",
 ]
 
-[[package]]
-name = "dirs"
-version = "7.0.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8d57d423b3c82e89b9a24ca3091fee61f456a26edbd28d26c65906f4bc1dcd8f"
-dependencies = [
- "dirs-sys",
-]
-
-[[package]]
-name = "dirs-sys"
-version = "0.5.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e01a3366d27ee9890022452ee61b2b63a67e6f13f58900b651ff5665f0bb1fab"
-dependencies = [
- "libc",
- "option-ext",
- "redox_users",
- "windows-sys 0.61.2",
-]
-
 [[package]]
 name = "dispatch"
 version = "0.2.0"
@@ -4750,12 +4729,6 @@ version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7c87def4c32ab89d880effc9e097653c8da5d6ef28e6b539d313baaacfbafcbe"
 
-[[package]]
-name = "option-ext"
-version = "0.2.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "04744f49eae99ab78e0d5c0b603ab218f515ea8cfe5a456d7629ad883a3b6e7d"
-
 [[package]]
 name = "orbclient"
 version = "0.3.55"
@@ -5463,16 +5436,6 @@ dependencies = [
  "bitflags 2.13.2",
 ]
 
-[[package]]
-name = "redox_users"
-version = "0.5.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "60dc65c0ff1a7ae1294b0c67b9f14baf70b644404010370171787bfac1038fc0"
-dependencies = [
- "libredox",
- "thiserror 2.0.21",
-]
-
 [[package]]
 name = "regex"
 version = "1.13.1"
@@ -6862,7 +6825,6 @@ version = "0.1.0"
 dependencies = [
  "anyhow",
  "chrono",
- "dirs",
  "dotenvy",
  "eyeball-im",
  "futures-util",

Cargo.toml

@@ -21,7 +21,6 @@ serde = { version = "1", features = ["derive"] }
 serde_json = "1"
 tracing = "0.1.44"
 rand = "0.10.3"
-dirs = "7.0.0"
 hex = "0.4.3"
 
 dotenvy = "0.15.7"

src/backend/mod.rs

@@ -2,6 +2,7 @@ mod format;
 mod session;
 mod room;
 mod navigation;
+mod credentials;
 
 use std::collections::HashMap;
 use std::sync::{Arc, Mutex};

src/backend/session.rs

@@ -4,6 +4,7 @@ use anyhow::{Context, Result, bail};
 use serde::{Deserialize, Serialize};
 
 use std::{fs, path::PathBuf};
+use crate::helpers;
 
 #[derive(Serialize, Deserialize)]
 pub struct SavedSession {
@@ -13,7 +14,7 @@ pub struct SavedSession {
 }
 
 pub fn data_dir() -> PathBuf {
-    let base: PathBuf = dirs::data_dir().unwrap_or_else(|| PathBuf::from("."));
+    let base: PathBuf = helpers::system::data_dir().unwrap_or_else(|| PathBuf::from("."));
 
     // 'TOFU_DATA_DIR' so you can run several accounts side by side during development.
     std::env::var_os("TOFU_DATA_DIR").map_or_else(|| base.join("tofu"), PathBuf::from)

src/helpers/mod.rs

@@ -0,0 +1 @@
+pub mod system;

src/helpers/system.rs

@@ -0,0 +1,22 @@
+use std::env;
+use std::ffi::OsString;
+use std::path::PathBuf;
+
+pub fn is_absolute_path(path: OsString) -> Option<PathBuf> {
+    let path = PathBuf::from(path);
+    if path.is_absolute() {
+        Some(path)
+    } else {
+        None
+    }
+}
+
+pub fn home_dir() -> Option<PathBuf> {
+    env::var("HOME").ok().map(PathBuf::from)
+}
+
+pub fn data_dir() -> Option<PathBuf> {
+    env::var_os("XDG_DATA_HOME")
+        .and_then(is_absolute_path)
+        .or_else(|| home_dir().map(|home| home.join(".local/share")))
+}