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#!/usr/bin/env nix-shell
#!nix-shell -i bash -p cabal2nix curl jq alejandra
#
# This script will update the nix-output-monitor derivation to the latest version using
# cabal2nix.
set -eo pipefail
# This is the directory of this update.sh script.
script_dir="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
derivation_file="${script_dir}/generated-package.nix"
# This is the latest released version of nix-output-monitor on GitHub.
new_version=$(curl --silent "https://api.github.com/repos/maralorn/nix-output-monitor/releases" | jq '.[0].tag_name' --raw-output)
echo "Updating nix-output-monitor to version $new_version."
echo "Running cabal2nix and outputting to ${derivation_file}..."
cat > "$derivation_file" << EOF
# This file has been autogenerate with cabal2nix.
# Update via ./update.sh"
EOF
cabal2nix \
--maintainer maralorn \
"https://github.com/maralorn/nix-output-monitor/archive/refs/tags/${new_version}.tar.gz" \
>> "$derivation_file"
alejandra "${derivation_file}" | cat
echo "Finished."
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