Flatpak builder works without the need for --no-sandbox

forge.config.js

@@ -1,25 +1,16 @@
-const fs = require('fs');
-const path = require('path');
-
 module.exports = {
   packagerConfig: {
     icon: 'appicons/icons/png/1024x1024.png',
     extraResource: ['resources/bin'],
-    ignore: ['Readme.md', 'ToDo.txt', 'TrimSP.cfg', 'fortran/*'],
-  },
-  hooks: {
-    postPackage: async (_forgeConfig, packageResult) => {
-      if (process.env.FORGE_FLATPAK !== '1') {
-        return;
-      }
-
-      for (const outputPath of packageResult.outputPaths) {
-        const sandboxHelper = path.join(outputPath, 'chrome-sandbox');
-        if (fs.existsSync(sandboxHelper)) {
-          fs.rmSync(sandboxHelper, { force: true });
-        }
-      }
-    },
+    ignore: [
+      'Readme.md',
+      'ToDo.txt',
+      'TrimSP.cfg',
+      'fortran/*',
+      '\\.flatpak-builder($|/)',
+      '\\.tmp-flatpak-manual($|/)',
+      'out-flatpak-test($|/)',
+    ],
   },
   makers: [
     {
@@ -50,6 +41,17 @@ module.exports = {
           description: 'TRIM.SP simulation GUI for ion implantation studies.',
           baseVersion: '24.08',
           runtimeVersion: '24.08',
+          icon: {
+            '16x16': 'appicons/icons/png/16x16.png',
+            '24x24': 'appicons/icons/png/24x24.png',
+            '32x32': 'appicons/icons/png/32x32.png',
+            '48x48': 'appicons/icons/png/48x48.png',
+            '64x64': 'appicons/icons/png/64x64.png',
+            '128x128': 'appicons/icons/png/128x128.png',
+            '256x256': 'appicons/icons/png/256x256.png',
+            '512x512': 'appicons/icons/png/512x512.png',
+          },
+          modules: [],
           categories: ['Science'],
           finishArgs: [
             '--share=ipc',

main.js

@@ -1,24 +1,9 @@
-const fsNode = require('fs');
 const { app, BrowserWindow, Menu, dialog, ipcMain, fs } = require('electron');
 
-function isFlatpakRuntime() {
-    return process.platform === 'linux' && (
-        !!process.env.FLATPAK_ID ||
-        process.env.container === 'flatpak' ||
-        fsNode.existsSync('/.flatpak-info')
-    );
-}
-
 // Some Linux/remote desktop setups expose a broken GPU context to Electron.
 // Fall back to software rendering instead of crashing on startup.
 app.disableHardwareAcceleration();
 
-if (isFlatpakRuntime()) {
-    // The packaged Flatpak currently runs without chrome-sandbox, so Chromium
-    // needs the explicit no-sandbox flag at startup.
-    app.commandLine.appendSwitch('no-sandbox');
-}
-
 if (process.platform === 'linux') {
     // The XDG portal dialog backend ignores defaultPath on some systems and
     // may cancel folder selection entirely in X11/SSH sessions.