feat: add flatpak support for linux

.github/workflows/bundle-desktop-linux.yml

@@ -21,7 +21,7 @@ name: "Bundle Desktop (Linux)"
 jobs:
   build-desktop-linux:
     name: Build Desktop (Linux)
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-x86-16core-64gb
 
     steps:
       - name: Checkout repository
@@ -76,7 +76,14 @@ jobs:
             rpm \
             fakeroot \
             dpkg-dev \
-            protobuf-compiler
+            protobuf-compiler \
+            flatpak \
+            flatpak-builder \
+            elfutils
+
+      - name: Setup Flatpak Runtimes
+        run: |
+          flatpak remote-add --if-not-exists --user flathub https://dl.flathub.org/repo/flathub.flatpakrepo
 
       - name: Activate hermit and set CARGO_HOME
         run: |
@@ -136,25 +143,25 @@ jobs:
         run: |
           source ./bin/activate-hermit
           cd ui/desktop
-          echo "Building Linux packages (.deb and .rpm)..."
+          echo "Building Linux packages (.deb, .rpm, and .flatpak)..."
 
-          # Build both .deb and .rpm packages
+          # Build all configured packages
           npm run make -- --platform=linux --arch=x64
 
           echo "Build completed. Checking output..."
           ls -la out/
-          find out/ -name "*.deb" -o -name "*.rpm" | head -10
+          find out/ -name "*.deb" -o -name "*.rpm" -o -name "*.flatpak" | head -10
 
       - name: List generated files
         run: |
           echo "=== All files in out/ directory ==="
           find ui/desktop/out/ -type f | head -20
           echo ""
           echo "=== Package files specifically ==="
-          find ui/desktop/out/ -name "*.deb" -o -name "*.rpm"
+          find ui/desktop/out/ -name "*.deb" -o -name "*.rpm" -o -name "*.flatpak"
           echo ""
           echo "=== File sizes ==="
-          find ui/desktop/out/ -name "*.deb" -o -name "*.rpm" -exec ls -lh {} \;
+          find ui/desktop/out/ -name "*.deb" -o -name "*.rpm" -o -name "*.flatpak" -exec ls -lh {} \;
 
       - name: Upload .deb package
         uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4
@@ -170,11 +177,19 @@ jobs:
           path: ui/desktop/out/make/rpm/x64/*.rpm
           if-no-files-found: error
 
+      - name: Upload .flatpak package
+        uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4
+        with:
+          name: Goose-linux-x64-flatpak
+          path: ui/desktop/out/make/flatpak/**/*.flatpak
+          if-no-files-found: error
+
       - name: Upload combined Linux packages
         uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4
         with:
           name: Goose-linux-x64
           path: |
             ui/desktop/out/make/deb/x64/*.deb
             ui/desktop/out/make/rpm/x64/*.rpm
+            ui/desktop/out/make/flatpak/**/*.flatpak
           if-no-files-found: error

.github/workflows/canary.yml

@@ -119,6 +119,7 @@ jobs:
             Goose*.zip
             *.deb
             *.rpm
+            *.flatpak
             download_cli.sh
           allowUpdates: true
           omitBody: true

.github/workflows/nightly.yml

@@ -121,6 +121,7 @@ jobs:
             Goose*.zip
             *.deb
             *.rpm
+            *.flatpak
             download_cli.sh
           allowUpdates: true
           omitBody: true

.github/workflows/release.yml

@@ -109,6 +109,7 @@ jobs:
             Goose*.zip
             *.deb
             *.rpm
+            *.flatpak
             download_cli.sh
           allowUpdates: true
           omitBody: true
@@ -127,6 +128,7 @@ jobs:
             Goose*.zip
             *.deb
             *.rpm
+            *.flatpak
             download_cli.sh
           allowUpdates: true
           omitBody: true

BUILDING_LINUX.md

@@ -138,8 +138,23 @@ If you see "Could not find goosed binary", ensure you've:
 - The RPM maker is disabled by default as it's not compatible with Arch-based systems
 - Use the ZIP distribution method for maximum compatibility
 
-#### Flatpak/Snap
-Building as Flatpak or Snap packages is not currently supported but may be added in the future.
+#### Flatpak
+Flatpak builds are supported via CI. To build locally:
+```bash
+# Install flatpak and flatpak-builder
+sudo apt install flatpak flatpak-builder
+
+# Add Flathub remote
+flatpak remote-add --if-not-exists --user flathub https://dl.flathub.org/repo/flathub.flatpakrepo
+
+# Build with Electron Forge
+npm run make -- --targets=@electron-forge/maker-flatpak
+```
+
+Output: `out/make/flatpak/x86_64/*.flatpak`
+
+#### Snap
+Building as Snap packages is not currently supported but may be added in the future.
 
 ## Development Workflow
 

documentation/src/components/LinuxDesktopInstallButtons.js

@@ -7,7 +7,8 @@ const FALLBACK_URL = "https://github.com/block/goose/releases/latest";
 const LinuxDesktopInstallButtons = () => {
   const [downloadUrls, setDownloadUrls] = useState({
     deb: FALLBACK_URL,
-    rpm: FALLBACK_URL
+    rpm: FALLBACK_URL,
+    flatpak: FALLBACK_URL
   });
 
   useEffect(() => {
@@ -17,7 +18,7 @@ const LinuxDesktopInstallButtons = () => {
         const cached = localStorage.getItem('goose-release-cache');
         const cacheTime = localStorage.getItem('goose-release-cache-time');
         const now = Date.now();
-        
+
         if (cached && cacheTime && (now - parseInt(cacheTime)) < 3600000) {
           // Use cached data if less than 1 hour old
           setDownloadUrls(JSON.parse(cached));
@@ -27,25 +28,25 @@ const LinuxDesktopInstallButtons = () => {
         // Fetch latest release from GitHub API
         const response = await fetch('https://api.github.com/repos/block/goose/releases/latest');
         if (!response.ok) throw new Error('API request failed');
-        
+
         const release = await response.json();
         const assets = release.assets || [];
-        
-        // Find DEB and RPM files
+
+        // Find DEB, RPM, and Flatpak files
         const debAsset = assets.find(asset => asset.name.includes('.deb') && asset.name.includes('amd64'));
         const rpmAsset = assets.find(asset => asset.name.includes('.rpm') && asset.name.includes('x86_64'));
-
-        if (debAsset && rpmAsset) {
-          const newUrls = {
-            deb: debAsset.browser_download_url,
-            rpm: rpmAsset.browser_download_url
-          };
-          
-          // Update state and cache
-          setDownloadUrls(newUrls);
-          localStorage.setItem('goose-release-cache', JSON.stringify(newUrls));
-          localStorage.setItem('goose-release-cache-time', now.toString());
-        }
+        const flatpakAsset = assets.find(asset => asset.name.endsWith('.flatpak'));
+
+        const newUrls = {
+          deb: debAsset?.browser_download_url || FALLBACK_URL,
+          rpm: rpmAsset?.browser_download_url || FALLBACK_URL,
+          flatpak: flatpakAsset?.browser_download_url || FALLBACK_URL
+        };
+
+        // Update state and cache
+        setDownloadUrls(newUrls);
+        localStorage.setItem('goose-release-cache', JSON.stringify(newUrls));
+        localStorage.setItem('goose-release-cache-time', now.toString());
       } catch (error) {
         console.warn('Failed to fetch latest release, using fallback URLs:', error);
         // Fallback URLs are already set in initial state
@@ -71,9 +72,15 @@ const LinuxDesktopInstallButtons = () => {
         >
           <IconDownload /> RPM Package (RHEL/Fedora)
         </Link>
+        <Link
+          className="button button--primary button--lg"
+          to={downloadUrls.flatpak}
+        >
+          <IconDownload /> Flatpak (Universal)
+        </Link>
       </div>
     </div>
   );
 };
 
-export default LinuxDesktopInstallButtons;
+export default LinuxDesktopInstallButtons;

ui/desktop/README.md

@@ -75,11 +75,15 @@ npm run make -- --targets=@electron-forge/maker-zip
 
 # For DEB package (Debian/Ubuntu)
 npm run make -- --targets=@electron-forge/maker-deb
+
+# For Flatpak (requires flatpak and flatpak-builder)
+npm run make -- --targets=@electron-forge/maker-flatpak
 ```
 
 The built application will be available in:
 - ZIP: `out/make/zip/linux/x64/goose-linux-x64-{version}.zip`
 - DEB: `out/make/deb/x64/goose_{version}_amd64.deb`
+- Flatpak: `out/make/flatpak/x86_64/*.flatpak`
 - Executable: `out/goose-linux-x64/goose`
 
 ### Windows

ui/desktop/forge.config.ts

@@ -93,6 +93,45 @@ module.exports = {
         },
       },
     },
+    {
+      name: '@electron-forge/maker-flatpak',
+      config: {
+        options: {
+          categories: ['Development'],
+          icon: 'src/images/icon.png',
+          homepage: 'https://block.github.io/goose/',
+          runtimeVersion: '25.08',
+          baseVersion: '25.08',
+          bin: 'Goose',
+          modules: [
+            {
+              name: 'libbz2-shim',
+              buildsystem: 'simple',
+              'build-commands': [
+                // Create the lib directory in the app bundle
+                'mkdir -p /app/lib',
+                // Point to the actual library in the 25.08 runtime
+                // We use a wildcard to handle multi-arch paths (x86_64-linux-gnu, etc)
+                'ln -s $(find /usr/lib -name "libbz2.so.1" | head -n 1) /app/lib/libbz2.so.1.0'
+              ]
+            }
+          ],
+          finishArgs: [
+            '--share=ipc',
+            '--socket=x11',
+            '--socket=wayland',
+            '--device=dri',
+            '--share=network',
+            '--filesystem=home',
+            '--talk-name=org.freedesktop.Notifications',
+            '--socket=session-bus',
+            '--socket=system-bus',
+            // This ensures the app looks in our shim folder first
+            '--env=LD_LIBRARY_PATH=/app/lib'
+          ],
+        },
+      },
+    },
   ],
   plugins: [
     {