Instance control

Cargo.lock

@@ -124,6 +124,12 @@ dependencies = [
  "target-lexicon",
 ]
 
+[[package]]
+name = "cfg-if"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
+
 [[package]]
 name = "concurrent-queue"
 version = "2.4.0"
@@ -203,7 +209,7 @@ version = "0.3.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "38e2275cc4e4fc009b0669731a1e5ab7ebf11f469eaede2bab9309a5b4d6057f"
 dependencies = [
- "memoffset",
+ "memoffset 0.9.0",
  "rustc_version",
 ]
 
@@ -720,6 +726,15 @@ version = "2.7.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "523dc4f511e55ab87b694dc30d0f820d60906ef06413f93d4d7a1385599cc149"
 
+[[package]]
+name = "memoffset"
+version = "0.6.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5aa361d4faea93603064a027415f07bd8e1d5c88c9fbf68bf56a285428fd79ce"
+dependencies = [
+ "autocfg",
+]
+
 [[package]]
 name = "memoffset"
 version = "0.9.0"
@@ -729,6 +744,19 @@ dependencies = [
  "autocfg",
 ]
 
+[[package]]
+name = "nix"
+version = "0.23.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8f3790c00a0150112de0f4cd161e3d7fc4b2d8a5542ffc35f099a2562aecb35c"
+dependencies = [
+ "bitflags 1.3.2",
+ "cc",
+ "cfg-if",
+ "libc",
+ "memoffset 0.6.5",
+]
+
 [[package]]
 name = "normpath"
 version = "1.2.0"
@@ -826,6 +854,7 @@ dependencies = [
  "os_pipe",
  "regex",
  "rust-i18n",
+ "single-instance",
  "user",
  "users",
 ]
@@ -1082,6 +1111,19 @@ dependencies = [
  "winapi 0.3.9",
 ]
 
+[[package]]
+name = "single-instance"
+version = "0.3.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4637485391f8545c9d3dbf60f9d9aab27a90c789a700999677583bcb17c8795d"
+dependencies = [
+ "libc",
+ "nix",
+ "thiserror",
+ "widestring",
+ "winapi 0.3.9",
+]
+
 [[package]]
 name = "slab"
 version = "0.4.9"
@@ -1288,6 +1330,12 @@ dependencies = [
  "winapi-util",
 ]
 
+[[package]]
+name = "widestring"
+version = "0.4.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c168940144dd21fd8046987c16a46a33d5fc84eec29ef9dcddc2ac9e31526b7c"
+
 [[package]]
 name = "winapi"
 version = "0.1.23"

Cargo.toml

@@ -16,3 +16,4 @@ os_pipe = "1.1.5"
 user = "0.1.1"
 users = "0.11.0"
 rust-i18n = "3.0.1"
+single-instance = "0.3.3"

data/com.github.pikaos-linux.pikawelcome.desktop

@@ -1,11 +1,8 @@
 [Desktop Entry]
 Type=Application
-Name=PikaOS Initial User Setup
+Name=Welcome to PikaOS
 Exec=pika-welcome
 Hidden=false
-NoDisplay=true
 Icon=com.github.pikaos-linux.pikawelcome
-X-GNOME-Autostart-enabled=true
-X-KDE-AutostartScript=true
 Categories=GNOME;GTK;Utility;
 Keywords=Gnome;GTK

data/pika-welcome-autostart.desktop

@@ -0,0 +1,12 @@
+[Desktop Entry]
+Type=Application
+Name=Welcome to PikaOS
+Exec=pika-welcome-autostart
+Hidden=true
+Icon=com.github.pikaos-linux.pikawelcome
+Categories=GNOME;GTK;Utility;
+Keywords=Gnome;GTK
+NoDisplay=true
+X-GNOME-Autostart-enabled=true
+X-KDE-AutostartScript=true
+AutostartCondition=GSettings com.github.pikaos-linux.pikawelcome startup-show

src/main.rs

@@ -8,6 +8,7 @@ use gdk::Display;
 /// Use all gtk4 libraries (gtk4 -> gtk because cargo)
 /// Use all libadwaita libraries (libadwaita -> adw because cargo)
 use gtk::*;
+use single_instance::SingleInstance;
 
 use std::boxed::Box;
 use users::*;
@@ -49,6 +50,9 @@ fn main() {
         app.connect_activate(build_ui);
     });
 
+    let instance = SingleInstance::new(APP_ID).unwrap();
+    assert!(instance.is_single());
+
     if get_current_username().unwrap() != "pikaos" {
         application.run();
     } else {