18 lines
543 B
Bash
18 lines
543 B
Bash
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#!/usr/bin/env nix-shell
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#!nix-shell -i bash -p jq
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set -euo pipefail
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# https://stackoverflow.com/a/246128
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SCRIPT_DIR=$( cd -- "$( dirname -- "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )
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repo=https://github.com/nixos/nixpkgs
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branch=nixpkgs-unstable
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file=$SCRIPT_DIR/pinned-nixpkgs.json
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defaultRev=$(git ls-remote "$repo" refs/heads/"$branch" | cut -f1)
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rev=${1:-$defaultRev}
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sha256=$(nix-prefetch-url --unpack "$repo/archive/$rev.tar.gz" --name source)
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jq -n --arg rev "$rev" --arg sha256 "$sha256" '$ARGS.named' | tee /dev/stderr > $file
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