zoom-us: simplify updater script (#460011)

version_x86_64_darwin=$(jq -r .zoom.version <<<"$mac_data")

version_x86_64_linux=$(jq -r .zoom.version <<<"$linux_data")

echo >&2 "=== Downloading packages and computing hashes..."

# We precalculate the hashes before calling update-source-version

# because it attempts to calculate each architecture's package's hash

# by running `nix-build --system <architecture> -A zoom-us.src` which

# causes cross compiling headaches; using nix-prefetch-url with

# hard-coded URLs is simpler.  Keep these URLs in sync with the ones

# in package.nix where `srcs` is defined.

hash_aarch64_darwin=$(nix --extra-experimental-features nix-command hash to-sri --type sha256 $(nix-prefetch-url --type sha256 "https://zoom.us/client/${version_aarch64_darwin}/zoomusInstallerFull.pkg?archType=arm64"))

hash_x86_64_darwin=$(nix --extra-experimental-features nix-command hash to-sri --type sha256 $(nix-prefetch-url --type sha256 "https://zoom.us/client/${version_x86_64_darwin}/zoomusInstallerFull.pkg"))

hash_x86_64_linux=$(nix --extra-experimental-features nix-command hash to-sri --type sha256 $(nix-prefetch-url --type sha256 "https://zoom.us/client/${version_x86_64_linux}/zoom_x86_64.pkg.tar.xz"))

echo >&2 "=== Updating package.nix ..."

# update-source-version expects to be at the root of nixpkgs

(cd "$nixpkgs" && update-source-version zoom-us "$version_aarch64_darwin" $hash_aarch64_darwin --system=aarch64-darwin --version-key=versions.aarch64-darwin)

(cd "$nixpkgs" && update-source-version zoom-us "$version_x86_64_darwin" $hash_x86_64_darwin --system=x86_64-darwin --version-key=versions.x86_64-darwin)

(cd "$nixpkgs" && update-source-version zoom-us "$version_x86_64_linux" $hash_x86_64_linux --system=x86_64-linux --version-key=versions.x86_64-linux --source-key=unpacked.src)

(cd "$nixpkgs" && update-source-version --ignore-same-version --print-changes --version-key=versions.aarch64-darwin pkgsCross.aarch64-darwin.zoom-us "$version_aarch64_darwin")

(cd "$nixpkgs" && update-source-version --ignore-same-version --print-changes --version-key=versions.x86_64-darwin pkgsCross.x86_64-darwin.zoom-us "$version_x86_64_darwin")

(cd "$nixpkgs" && update-source-version --ignore-same-version --print-changes --version-key=versions.x86_64-linux pkgsCross.gnu64.zoom-us "$version_x86_64_linux" --source-key=unpacked.src)

echo >&2 "=== Done!"