fix building nerd font attributes on Debian and snap

snap/snapcraft.yaml

@@ -76,6 +76,7 @@ parts:
       - git
       - patchelf
       - gettext
+      - python3
     # TODO: Remove -fno-sys=gtk4-layer-shell when we upgrade to a version that packages it Ubuntu 24.10+
     override-build: |
       craftctl set version=$(cat VERSION)

src/build/SharedDeps.zig

@@ -503,7 +503,7 @@ pub fn add(
     // Fonts
     {
         const generate_nerd_font_attributes = b.addSystemCommand(&.{
-            "python",
+            "python3",
         });
         generate_nerd_font_attributes.addFileArg(b.path("src/font/nerd_font_codegen.py"));
         generate_nerd_font_attributes.setStdIn(.{ .lazy_path = b.path("vendor/nerd-fonts/font-patcher.py") });

src/build/docker/debian/Dockerfile

@@ -14,6 +14,7 @@ RUN DEBIAN_FRONTEND="noninteractive" apt-get -qq update && \
     lsb-release \
     libxml2-utils \
     pandoc \
+    python3 \
     # Ghostty Dependencies
     libadwaita-1-dev \
     libgtk-4-dev && \