2019-12-20 04:25:26 +00:00
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#!/usr/bin/env nix-shell
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#!nix-shell -i bash -p cabal2nix curl jq
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#
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# This script will update the spago derivation to the latest version using
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# cabal2nix.
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#
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# Note that you should always try building spago after updating it here, since
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# some of the overrides in pkgs/development/haskell/configuration-nix.nix may
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# need to be updated/changed.
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set -eo pipefail
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# This is the directory of this update.sh script.
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script_dir="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
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# Spago derivation created with cabal2nix.
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2019-12-20 07:12:29 +00:00
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spago_derivation_file="${script_dir}/spago.nix"
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2019-12-20 04:25:26 +00:00
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# This is the current revision of spago in Nixpkgs.
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old_version="$(sed -En 's/.*\bversion = "(.*?)".*/\1/p' "$spago_derivation_file")"
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# This is the latest release version of spago on GitHub.
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new_version=$(curl --silent "https://api.github.com/repos/spacchetti/spago/releases" | jq '.[0].tag_name' --raw-output)
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echo "Updating spago from old version $old_version to new version $new_version."
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echo "Running cabal2nix and outputting to ${spago_derivation_file}..."
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cabal2nix --revision "$new_version" "https://github.com/spacchetti/spago.git" > "$spago_derivation_file"
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echo "Finished."
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