Setup `git lfs` on either linux or Mac M1/M2 using the github release binaries

setup_git_lfs.sh

#/usr/bin/env bash
set -e
set -x

# Check if INSTALL_PREFIX is set; otherwise, error
if [ -z "$INSTALL_PREFIX" ]; then
    echo "INSTALL_PREFIX is not set"
    echo "Example usage: INSTALL_PREFIX='~/.local/bin' bash $0"
    exit 1
fi
prefix="$INSTALL_PREFIX"

# https://github.com/git-lfs/git-lfs/releases
linux_url="https://github.com/git-lfs/git-lfs/releases/download/v3.4.0/git-lfs-linux-amd64-v3.4.0.tar.gz"
linux_sha256="60b7e9b9b4bca04405af58a2cd5dff3e68a5607c5bc39ee88a5256dd7a07f58c"
osx_arm_url="https://github.com/git-lfs/git-lfs/releases/download/v3.4.0/git-lfs-darwin-arm64-v3.4.0.zip"
osx_arm_sha256="114fadc3dee4ee6e29b57823b337549c823b8b0680f33190f29a5700e4b29196"
# Check what machine the user is on

# If on linux, download the linux version of git-lfs
# If on mac, download the mac version of git-lfs
if [[ "$OSTYPE" == "linux-gnu"* ]]; then
    url="$linux_url"
    sha="$linux_sha256"
elif [[ "$OSTYPE" == "darwin"* ]]; then
    url="$osx_arm_url"
    sha="$osx_arm_sha256"
else
    echo "Unsupported OS"
    exit 1
fi

# Download the git-lfs binary
wget "$url"

filename=$(basename "$url")
# Verify the checksum
# If it fails, error
if [[ "$OSTYPE" == "linux-gnu"* ]]; then
    echo "$sha $filename" | sha256sum -c -
elif [[ "$OSTYPE" == "darwin"* ]]; then
    shasum -a 256 -c <<<"$sha *$filename"
fi

# Extract, setting the prefix to a local directory for the install
tar -xvf $filename
rm $filename

export PREFIX="$prefix"
bash git-lfs-*/install.sh