fix(release): xcb runtime set for the AppImage deploy, in-tree dish flatpak module

.github/workflows/release.yml

@@ -439,9 +439,15 @@ jobs:
           Acquire::Retries "2";
           CONF
           sudo apt-get update
+          # The xcb block is what libqxcb.so links: linuxdeploy's qt plugin
+          # refuses to deploy a platform plugin whose dependencies it cannot
+          # resolve on the build host.
           sudo apt-get install -y --no-install-recommends \
             build-essential cmake ninja-build pkg-config \
             libsodium-dev libudev-dev libusb-1.0-0-dev \
+            libxkbcommon-x11-0 libxcb-cursor0 libxcb-icccm4 libxcb-image0 \
+            libxcb-keysyms1 libxcb-randr0 libxcb-render-util0 libxcb-shape0 \
+            libxcb-xinerama0 libxcb-xkb1 \
             file fakeroot rsync wget curl librsvg2-bin gzip
 
       # Not apt: jammy ships Qt 6.2 and this project's floor is 6.7. The action

packaging/flatpak/com.tinkernorth.Dish.yml

@@ -96,7 +96,8 @@ modules:
 
   - name: dish
     buildsystem: cmake-ninja
-    builddir: true
+    # No builddir here: post-install copies the udev rule by a
+    # source-relative path, and dish's CMake accepts an in-tree configure.
     config-opts:
       - -DCMAKE_BUILD_TYPE=Release
       - -DDISH_BUILD_TESTS=OFF

packaging/flatpak/flathub/com.tinkernorth.Dish.yml

@@ -96,7 +96,8 @@ modules:
 
   - name: dish
     buildsystem: cmake-ninja
-    builddir: true
+    # No builddir here: post-install copies the udev rule by a
+    # source-relative path, and dish's CMake accepts an in-tree configure.
     config-opts:
       - -DCMAKE_BUILD_TYPE=Release
       - -DDISH_BUILD_TESTS=OFF