pkg download command and patches

assets/var/gnu/slint_pzd.md

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+slint 1.17.1
+=
+https://github.com/slint-ui/slint/archive/refs/tags/v1.17.1.tar.gz
+
+``` sh *** patch ***
+# Remap путей (будет работать при прямой сборке cargo)
+cat >> /pkg/gnu/slint/src/.cargo/config.toml << 'EOF'
+
+[build]
+rustflags = ["--remap-path-prefix=/pkg/gnu/rustup/registry/src=/src", "--remap-path-prefix=/rustc=/rustc"]
+EOF
+```
+
+``` env *** env ***
+CARGO_INCREMENTAL=false
+CARGO_NET_OFFLINE=true
+```
+
+``` sh *** build ***
+cd /pkg/gnu/slint/src
+
+# Собираем slint-cpp напрямую через Cargo (НЕ через CMake/Corrosion)
+cargo build --release \
+    -p slint-cpp \
+    --no-default-features \
+    --features "compiler,backend-winit,renderer-software"
+
+# Генерируем CMake-конфиги и устанавливаем через CMake,
+# но указываем уже собранный компилятор и библиотеку
+mkdir -p build && cd build
+cmake -DCMAKE_INSTALL_PREFIX="$pkgpath" \
+      -DCMAKE_BUILD_TYPE=MinSizeRel \
+      -DBUILD_SHARED_LIBS=OFF \
+      -DBUILD_TESTING=OFF \
+      -DSLINT_COMPILER=/pkg/gnu/slint/src/target/release/slint-compiler \
+      -DSLINT_FEATURE_RENDERER_FEMTOVG=OFF \
+      -DSLINT_FEATURE_RENDERER_SOFTWARE=ON \
+      -DSLINT_FEATURE_INTERPRETER=OFF \
+      -DSLINT_FEATURE_ACCESSIBILITY=OFF \
+      -DSLINT_FEATURE_TESTING=OFF \
+      -DSLINT_FEATURE_BACKEND_WINIT_X11=OFF \
+      -DSLINT_FEATURE_BACKEND_WINIT_WAYLAND=ON \
+      -DCMAKE_CXX_FLAGS="-fno-asynchronous-unwind-tables -fno-exceptions -fno-rtti" \
+      -G Ninja ..
+cmake --build .
+cmake --install .
+
+# Копируем статическую библиотеку из cargo target поверх cmake-шной
+cp /pkg/gnu/slint/src/target/release/libslint_cpp.a "$pkgpath/lib/libslint_cpp.a"
+```