Install or update Zig on Debian

zig-up.bash

#!/usr/bin/env bash
# Install or update Zig on Debian
set -xeo pipefail
dst="$HOME/zig"
minisign_pub="RWSGOq2NVecA2UPNdBUZykf1CCb147pkmdtYxgb3Ti+JO/wCYvhbAb/U"
json_url="https://ziglang.org/download/index.json"
version="master"
arch="x86_64"
os="linux"
json_file="$(basename "$json_url")"
need=()
for i in jq minisign wget; do which "$i" || need+=("$i"); done
if [ ${#need[@]} -gt 0 ]; then sudo apt update; sudo apt install -y ${need[@]}; fi
cd "$dst"
wget -N "$json_url"
tar_url=$(jq -r ".$version.\"$arch-$os\".tarball" "$json_file")
tar_sha=$(jq -r ".$version.\"$arch-$os\".shasum" "$json_file")
tar_file=$(echo "$tar_url" |cut -d/ -f5)
tar_sha_file="$tar_file.sha256"
dir=$(echo "$tar_file" |sed 's/\.tar\.xz$//')
echo "$tar_url" "$tar_url.minisig" |xargs -P0 wget -N
echo "$tar_sha  $tar_file" >"$tar_sha_file"
sha256sum -c "$tar_sha_file"
minisign -V -P "$minisign_pub" -m "$tar_file"
if [ ! -e "$dir" ]; then tar xf "$tar_file"; fi
rm -f latest
ln -s "$dir" latest
ls -l
t="hello"; if [ ! -e "$t" ]; then mkdir "$t"; cd "$t"; zig init-exe; cd -; fi
cd "$t"; zig build run; cd -
ls |grep "^zig-$os-$arch-" |grep -v "^$dir" |xargs rm -rf