pyrox.dev
1#!/usr/bin/env nix-shell
2#!nix-shell -i bash -p nix-prefetch-scripts
3
4set -eou pipefail
5
6version=$1
7
8bucket="https://download.pytorch.org/libtorch"
9CUDA_VERSION=cu124
10
11url_and_key_list=(
12 "aarch64-darwin-cpu $bucket/cpu/libtorch-macos-arm64-${version}.zip libtorch-macos-arm64-${version}.zip"
13 "x86_64-linux-cpu $bucket/cpu/libtorch-cxx11-abi-shared-with-deps-${version}%2Bcpu.zip libtorch-cxx11-abi-shared-with-deps-${version}-cpu.zip"
14 "x86_64-linux-cuda $bucket/${CUDA_VERSION}/libtorch-cxx11-abi-shared-with-deps-${version}%2B${CUDA_VERSION}.zip libtorch-cxx11-abi-shared-with-deps-${version}-${CUDA_VERSION}.zip"
15)
16
17hashfile="binary-hashes-$version.nix"
18echo " \"$version\" = {" >> $hashfile
19
20for url_and_key in "${url_and_key_list[@]}"; do
21 key=$(echo "$url_and_key" | cut -d' ' -f1)
22 url=$(echo "$url_and_key" | cut -d' ' -f2)
23 name=$(echo "$url_and_key" | cut -d' ' -f3)
24
25 echo "prefetching ${url}..."
26 hash=$(nix --extra-experimental-features nix-command hash to-sri --type sha256 $(nix-prefetch-url --unpack "$url" --name "$name"))
27
28 echo " $key = {" >> $hashfile
29 echo " name = \"$name\";" >> $hashfile
30 echo " url = \"$url\";" >> $hashfile
31 echo " hash = \"$hash\";" >> $hashfile
32 echo " };" >> $hashfile
33
34 echo
35done
36
37echo " };" >> $hashfile
38echo "done."