enable armv8,neon for build scripts

Dockerfile

@@ -8,7 +8,7 @@ WORKDIR /root/shadowsocks-rust
 
 ADD . .
 
-RUN rustup install "$(cat rust-toolchain)" && \
+RUN rustup install nightly && \
     case "$TARGETARCH" in \
     "386") \
         RUST_TARGET="i686-unknown-linux-musl" \
@@ -30,7 +30,7 @@ RUN rustup install "$(cat rust-toolchain)" && \
     wget -qO- "https://musl.cc/$MUSL-cross.tgz" | tar -xzC /root/ && \
     CC=/root/$MUSL-cross/bin/$MUSL-gcc && \
     rustup target add $RUST_TARGET && \
-    RUSTFLAGS="-C linker=$CC" CC=$CC cargo build --target $RUST_TARGET --release && \
+    RUSTFLAGS="-C linker=$CC" CC=$CC cargo build --target "$RUST_TARGET" --release --features "local-tun local-redir armv8 neon" && \
     mv target/$RUST_TARGET/release/ss* target/release/
 
 FROM alpine:3.14 AS sslocal

Makefile

@@ -6,7 +6,7 @@ all: build
 
 build:
 ifeq (${TARGET}, release)
-	cargo build --release
+	cargo build --release --features "local-tun local-redir armv8 neon"
 else
 	cargo build
 endif

homebrew/shadowsocks-rust.rb

@@ -15,7 +15,7 @@ class ShadowsocksRust < Formula
     def install
       ENV.with_build_environment do
         ENV["RUSTFLAGS"] = "-C target-cpu=native"
-        system "cargo", "install", *std_cargo_args
+        system "cargo", "install", *std_cargo_args, "--features", "local-tun local-redir"
       end
     end
   

snap/snapcraft.yaml

@@ -43,6 +43,8 @@ parts:
   shadowsocks-rust:
     plugin: rust
     source: https://github.com/shadowsocks/shadowsocks-rust.git
+    rust-channel: nightly
+    rust-features: [local-tun, local-redir, armv8, neon]
     override-pull: |
       snapcraftctl pull
       snapcraftctl set-version `git describe --tags --long | sed 's/\([^-]*-g\)/r\1/;s/-/./g'`