47 lines
1.3 KiB
Bash
Executable file
47 lines
1.3 KiB
Bash
Executable file
#!/usr/bin/env bash
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set -euo pipefail
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cd "$(dirname "$(readlink -f "$0")")" || exit
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repo="https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git"
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# step 1: figure out the latest version from the tags
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if [ -z "${1:-}" ]; then
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revision="$(git ls-remote --refs --tags --sort refname "$repo" | tail -n1 | cut -f2 | cut -d '/' -f3)"
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version=$revision
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else
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revision=$1
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if [ -z "${2:-}" ]; then
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version="unstable-$(date "+%Y-%m-%d")"
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else
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version=$2
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fi
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fi
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# step 2: prefetch the source tarball
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snapshotUrl="$repo/snapshot/linux-firmware-$revision.tar.gz"
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hash="$(nix-prefetch-url --unpack "$snapshotUrl")"
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sriHash="$(nix --experimental-features nix-command hash to-sri "sha256:$hash")"
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# step 3: rebuild as a non-FO derivation to get the right hash
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cat > source.nix << EOF
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{
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version = "$version";
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revision = "$revision";
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sourceHash = "$sriHash";
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outputHash = null;
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}
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EOF
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outPath="$(nix --experimental-features "nix-command flakes" build ".#linux-firmware" --no-link --print-out-paths)"
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outHash="$(nix --experimental-features nix-command hash path "$outPath")"
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# step 4: generate the final file
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cat > source.nix << EOF
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# This file is autogenerated! Run ./update.sh to regenerate.
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{
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version = "$version";
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revision = "$revision";
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sourceHash = "$sriHash";
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outputHash = "$outHash";
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}
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EOF
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