Disable AppImage builds.

.github/workflows/ci.yml

@@ -27,7 +27,11 @@ jobs:
         backend:
           - "macOS-Xcode"
           - "macOS-app"
-          - "linux-appimage"
+          # AppImage builds (a) take over an hour, because the need to compile Numpy and
+          # Pandas from source, and (b) are only here as a light validation that
+          # Standalone Python is working. A Flatpak build also validates this, but
+          # completes in minutes.
+          # - "linux-appimage"
           - "linux-flatpak"
           - "windows-VisualStudio"
           - "windows-app"
@@ -54,10 +58,10 @@ jobs:
             pre-command: "sudo apt-get update -y && sudo apt-get install -y python3-gi python3-gi-cairo gir1.2-gtk-3.0 python3-dev libgirepository1.0-dev libcairo2-dev pkg-config"
             briefcase-target: "linux system"
 
-          - backend: linux-appimage
-            runs-on: ubuntu-latest
-            pre-command: "sudo apt-get update -y && sudo apt-get install -y python3-gi python3-gi-cairo gir1.2-gtk-3.0 python3-dev libgirepository1.0-dev libcairo2-dev pkg-config libfuse2"
-            briefcase-target: "linux appimage"
+          # - backend: linux-appimage
+          #   runs-on: ubuntu-latest
+          #   pre-command: "sudo apt-get update -y && sudo apt-get install -y python3-gi python3-gi-cairo gir1.2-gtk-3.0 python3-dev libgirepository1.0-dev libcairo2-dev pkg-config libfuse2"
+          #   briefcase-target: "linux appimage"
 
           - backend: linux-flatpak
             runs-on: ubuntu-latest

pyproject.toml

@@ -95,7 +95,7 @@ linuxdeploy_plugins = [
 dockerfile_extra_content = """
 # Install Rust (required for cryptography)
 RUN curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y
-# Set up C++ compiler (required for numpy)
+# Set up compilers (required for numpy)
 ENV CXX="g++ -pthread"
 ENV AR=ar
 # Add a symlink for python->python3 (needed for pandas)