Respect XDG_RUNTIME_DIR for /path/to/swayr-%s.sock

/run may not exist outside of systemd distributions. Instead of guessing
rely on XDG_RUNTIME_DIR and fall back to /tmp. XDG_RUNTIME_DIR is always
defined under Wayland, so the fallback would only be triggered if swayr
is used from X11 or VT/serial console.

Cargo.lock

@@ -146,15 +146,6 @@ version = "0.2.97"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "12b8adadd720df158f4d70dfe7ccc6adb0472d7c55ca83445f6a5ab3e36f8fb6"
 
-[[package]]
-name = "log"
-version = "0.4.14"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "51b9bbe6c47d51fc3e1a9b945965946b4c44142ab8792c50835a980d362c2710"
-dependencies = [
- "cfg-if",
-]
-
 [[package]]
 name = "os_str_bytes"
 version = "2.4.0"
@@ -297,7 +288,6 @@ dependencies = [
  "serde_json",
  "swayipc",
  "toml",
- "users",
 ]
 
 [[package]]
@@ -376,16 +366,6 @@ version = "0.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8ccb82d61f80a663efe1f787a51b16b5a51e3314d6ac365b08639f52387b33f3"
 
-[[package]]
-name = "users"
-version = "0.11.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "24cc0f6d6f267b73e5a2cadf007ba8f9bc39c6a6f9666f8cf25ea809a153b032"
-dependencies = [
- "libc",
- "log",
-]
-
 [[package]]
 name = "vec_map"
 version = "0.8.2"

Cargo.toml

@@ -12,7 +12,6 @@ edition = "2018"
 serde = { version = "1.0.126", features = ["derive"] }
 serde_json = "1.0.64"
 clap = "3.0.0-beta.2"
-users = "0.11.0"
 swayipc = "3.0.0-alpha.3"
 toml = "0.5.8"
 directories = "3.0"

src/util.rs

@@ -23,9 +23,16 @@ use std::process as proc;
 
 pub fn get_swayr_socket_path() -> String {
     let wayland_display = std::env::var("WAYLAND_DISPLAY");
+    let xdg_runtime_dir = std::env::var("XDG_RUNTIME_DIR");
     format!(
-        "/run/user/{}/swayr-{}.sock",
+        "{}/swayr-{}.sock",
-        users::get_current_uid(),
+        match xdg_runtime_dir {
+            Ok(val) => val,
+            Err(_e) => {
+                eprintln!("Couldn't get XDG_RUNTIME_DIR!");
+                String::from("/tmp")
+            }
+        },
         match wayland_display {
             Ok(val) => val,
             Err(_e) => {