ci/update-pinned-nixpkgs.sh

   1 #!/usr/bin/env nix-shell
   2 #!nix-shell -i bash -p jq
   3
   4 set -euo pipefail
   5
   6 # https://stackoverflow.com/a/246128
   7 SCRIPT_DIR=$( cd -- "$( dirname -- "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )
   8
   9 repo=https://github.com/nixos/nixpkgs
  10 branch=nixpkgs-unstable
  11 file=$SCRIPT_DIR/pinned-nixpkgs.json
  12
  13 defaultRev=$(git ls-remote "$repo" refs/heads/"$branch" | cut -f1)
  14 rev=${1:-$defaultRev}
  15 sha256=$(nix-prefetch-url --unpack "$repo/archive/$rev.tar.gz" --name source)
  16
  17 jq -n --arg rev "$rev" --arg sha256 "$sha256" '$ARGS.named' | tee /dev/stderr > $file