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tensorflow-haskell/nix/update

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#!/usr/bin/env nix-shell
#!nix-shell -i bash -p bash nix curl jq
# vim: filetype=sh
# Updates the nixpkgs.json to the latest release
# See https://gist.github.com/zimbatm/de5350245874361762b6a4dfe5366530
set -euo pipefail
cd "$(dirname "$0")" || exit 1
branch=release-19.09
owner=NixOS
repo=nixpkgs
rev=$(curl -sfL https://api.github.com/repos/$owner/$repo/git/refs/heads/$branch | jq -r .object.sha)
url=https://github.com/$owner/$repo/archive/$rev.tar.gz
release_sha256=$(nix-prefetch-url --unpack "$url")
cat <<NIXPKGS | tee src.json
{
"owner": "$owner",
"repo": "$repo",
"rev": "$rev",
"sha256": "$release_sha256"
}
NIXPKGS