bazaar-bin, chiaki-ng-bin, linux-wallpaperengine-bin: add packages (built and published by CI)

linux-wallpaperengine-bin/pkg.sh

@@ -0,0 +1,71 @@
+# linux-wallpaperengine-bin - prebuilt package of
+# https://github.com/Almamu/linux-wallpaperengine (Wallpaper Engine backgrounds
+# on Linux, C++/CMake, bundles CEF for web wallpapers).
+#
+# Upstream has no releases or tags, so versions are commit snapshots of main
+# in the same "r<commit count>.<short sha>" format the AUR -git package uses.
+# Every new upstream commit therefore produces a new build.
+
+UPSTREAM_REPO="Almamu/linux-wallpaperengine"
+
+# Installed in CI (pacman) before build_artifact runs.
+BUILD_DEPS=(cmake git sdl2 glm wayland-protocols xorg-xrandr lz4 ffmpeg mpv
+            glfw glew freeglut libpulse libcups at-spi2-core nss libxcomposite
+            libxdamage nspr dbus freetype2)
+
+latest_version() {
+  local sha count
+  sha="$(gh api "repos/$UPSTREAM_REPO/commits/main" --jq '.sha')" || return 1
+  # total commit count on main, from the Link pagination header
+  count="$(gh api -i "repos/$UPSTREAM_REPO/commits?sha=main&per_page=1" \
+    | grep -oiP 'page=\K[0-9]+(?=>; rel="last")')" || return 1
+  [[ -n "$sha" && -n "$count" ]] || return 1
+  echo "r${count}.${sha:0:7}"
+}
+
+# build_artifact <version> <output-file>
+build_artifact() {
+  local ver="$1" outfile="$2"
+  local sha="${ver##*.}"
+  local workdir destdir srctree actual
+  workdir="$(mktemp -d)"
+  destdir="$(mktemp -d)"
+  srctree="$workdir/src"
+
+  git clone "https://github.com/$UPSTREAM_REPO.git" "$srctree"
+  git -C "$srctree" checkout "$sha"
+  git -C "$srctree" submodule update --init --recursive
+
+  # make sure the checkout is really the snapshot the version claims to be
+  actual="r$(git -C "$srctree" rev-list --count HEAD).$(git -C "$srctree" rev-parse --short=7 HEAD)"
+  if [[ "$actual" != "$ver" ]]; then
+    echo "snapshot mismatch: checked out $actual, expected $ver" >&2
+    return 1
+  fi
+
+  # flags as in the AUR -git package; CEF is fetched by CMake during setup
+  cmake -B "$workdir/build" -S "$srctree" \
+    -DCMAKE_BUILD_TYPE=Release \
+    -DCMAKE_INSTALL_PREFIX=/opt/linux-wallpaperengine \
+    -Wno-dev \
+    -DCMAKE_CXX_FLAGS='-ffat-lto-objects -Wno-builtin-macro-redefined' \
+    -DCMAKE_C_FLAGS='-Wno-builtin-macro-redefined'
+  cmake --build "$workdir/build" -j"$(nproc)"
+  DESTDIR="$destdir" cmake --install "$workdir/build"
+  chmod 755 "$destdir/opt/linux-wallpaperengine/linux-wallpaperengine"
+
+  # forwarding script, as in the AUR -git package
+  mkdir -p "$destdir/usr/bin"
+  cat > "$destdir/usr/bin/linux-wallpaperengine" << 'EOF'
+#!/bin/bash
+export LD_LIBRARY_PATH="/opt/linux-wallpaperengine/lib:$LD_LIBRARY_PATH"
+cd /opt/linux-wallpaperengine
+exec ./linux-wallpaperengine "$@"
+EOF
+  chmod 755 "$destdir/usr/bin/linux-wallpaperengine"
+
+  tar --zstd --sort=name --owner=0 --group=0 --numeric-owner --mtime='@0' \
+      -cf "$outfile" -C "$destdir" usr opt
+
+  rm -rf "$workdir" "$destdir"
+}