fix(config): Use XDG config path

Cargo.lock

@@ -152,6 +152,26 @@ dependencies = [
  "tokio",
 ]
 
+[[package]]
+name = "dirs"
+version = "4.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ca3aa72a6f96ea37bbc5aa912f6788242832f75369bdfdadcb0e38423f100059"
+dependencies = [
+ "dirs-sys",
+]
+
+[[package]]
+name = "dirs-sys"
+version = "0.3.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1b1d1d91c932ef41c0f2663aa8b0ca0342d444d842c06914aa0a7e352d0bada6"
+dependencies = [
+ "libc",
+ "redox_users",
+ "winapi",
+]
+
 [[package]]
 name = "env_logger"
 version = "0.7.1"
@@ -270,6 +290,17 @@ dependencies = [
  "slab",
 ]
 
+[[package]]
+name = "getrandom"
+version = "0.2.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c05aeb6a22b8f62540c194aac980f2115af067bfe15a0734d7277a768d396b31"
+dependencies = [
+ "cfg-if",
+ "libc",
+ "wasi",
+]
+
 [[package]]
 name = "hashbrown"
 version = "0.11.2"
@@ -330,9 +361,9 @@ checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
 
 [[package]]
 name = "libc"
-version = "0.2.119"
+version = "0.2.139"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1bf2e165bb3457c8e098ea76f3e3bc9db55f87aa90d52d0e6be741470916aaa4"
+checksum = "201de327520df007757c1f0adce6e827fe8562fbc28bfd9c15571c66ca1f5f79"
 
 [[package]]
 name = "libdbus-sys"
@@ -389,7 +420,7 @@ dependencies = [
 
 [[package]]
 name = "nm-reactor"
-version = "0.1.0"
+version = "0.1.2"
 dependencies = [
  "anyhow",
  "async-recursion",
@@ -409,6 +440,7 @@ dependencies = [
  "serde_derive",
  "tokio",
  "tokio-stream",
+ "xdg",
 ]
 
 [[package]]
@@ -584,6 +616,26 @@ dependencies = [
  "proc-macro2",
 ]
 
+[[package]]
+name = "redox_syscall"
+version = "0.2.16"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fb5a58c1855b4b6819d59012155603f0b22ad30cad752600aadfcb695265519a"
+dependencies = [
+ "bitflags",
+]
+
+[[package]]
+name = "redox_users"
+version = "0.4.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b033d837a7cf162d7993aded9304e30a83213c648b6e389db233191f891e5c2b"
+dependencies = [
+ "getrandom",
+ "redox_syscall",
+ "thiserror",
+]
+
 [[package]]
 name = "regex"
 version = "1.5.5"
@@ -832,6 +884,15 @@ version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
 
+[[package]]
+name = "xdg"
+version = "2.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0c4583db5cbd4c4c0303df2d15af80f0539db703fa1c68802d4cbbd2dd0f88f6"
+dependencies = [
+ "dirs",
+]
+
 [[package]]
 name = "yaml-rust"
 version = "0.4.5"

Cargo.toml

@@ -32,3 +32,4 @@ futures = "0.3.18"
 async-trait = "0.1.52"
 nm-reactor_dbus_codegen = {path = "dbus_codegen"}
 async-recursion = "1.0"
+xdg = "2.4"

src/main.rs

@@ -63,12 +63,21 @@ impl AppOpts for Opts {
 }
 
 impl ConfigurableAppOpts<config::Config> for Opts {
-    fn get_additional_config_paths(&self) -> Vec<(PathBuf, Option<ConfigFileFormat>)> {
+    fn get_additional_config_paths(&self) -> Vec<(PathBuf, std::option::Option<ConfigFileFormat>)> {
+        let mut paths = vec![];
+
+        let xdg_dirs = xdg::BaseDirectories::with_prefix("nm-reactor").unwrap();
+        let xdg_config_path = xdg_dirs.find_config_file("config.yaml");
+
+        if let Some(xdg_config_path) = xdg_config_path {
+            paths.push((xdg_config_path, None));
+        }
+
         if let Some(config_path) = &self.config {
-            vec![(config_path.clone(), None)]
-        } else {
-            vec![]
+            paths.push((config_path.clone(), None))
         }
+
+        paths
     }
 
     fn get_config_file_format(&self) -> ConfigFileFormat {