40 lines
1.2 KiB
Bash
Executable file
40 lines
1.2 KiB
Bash
Executable file
#!/usr/bin/env nix-shell
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#!nix-shell -i bash -p jq
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set -o pipefail -o errexit -o nounset
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trace() { echo >&2 "$@"; }
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SCRIPT_DIR=$( cd -- "$( dirname -- "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )
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# Determined by `runs-on: ubuntu-latest` in .github/workflows/check-by-name.yml
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CI_SYSTEM=x86_64-linux
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channel=nixos-unstable
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pin_file=$SCRIPT_DIR/pinned-tool.json
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trace -n "Fetching latest version of channel $channel.. "
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# This is probably the easiest way to get Nix to output the path to a downloaded channel!
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nixpkgs=$(nix-instantiate --find-file nixpkgs -I nixpkgs=channel:"$channel")
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trace "$nixpkgs"
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# This file only exists in channels
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rev=$(<"$nixpkgs/.git-revision")
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trace -e "Git revision of channel $channel is \e[34m$rev\e[0m"
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trace -n "Fetching the prebuilt version of nixpkgs-check-by-name for $CI_SYSTEM.. "
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# This is the architecture used by CI, we want to prefetch the exact path to avoid having to evaluate Nixpkgs
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ci_path=$(nix-build --no-out-link "$nixpkgs" \
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-A tests.nixpkgs-check-by-name \
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--arg config '{}' \
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--argstr system "$CI_SYSTEM" \
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--arg overlays '[]' \
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-j 0 \
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| tee /dev/stderr)
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trace "Updating $pin_file"
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jq -n \
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--arg rev "$rev" \
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--arg ci-path "$ci_path" \
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'$ARGS.named' \
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> "$pin_file"
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