mirror of
https://github.com/NixOS/nix.dev.git
synced 2024-10-18 14:32:43 -04:00
49 lines
1.5 KiB
Nix
49 lines
1.5 KiB
Nix
{ writeShellApplication
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, git
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, gnused
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, niv
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, nix
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, ripgrep
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, coreutils
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}:
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# add or update Nix releases using `niv` in the current directory.
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# this will clone the entire Git repository of Nix.
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writeShellApplication {
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name = "update-nix-releases";
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runtimeInputs = [ git gnused niv nix ripgrep ];
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text = ''
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# get release branches
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git ls-remote https://github.com/nixos/nix "refs/heads/*" \
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| rg '/\d(.*)-maintenance' | awk '{sub(/\s*refs\/heads\//, "", $2); print $2, $1}' \
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| sort --reverse --version-sort > releases
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niv show | awk '/branch:/ {branch = $2} /rev:/ {print branch, $2}' > pinned
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tmp=$(mktemp -d)
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trap 'rm -rf "$tmp"' EXIT
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git clone https://github.com/nixos/nix "$tmp" --depth 1 --quiet
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# only update releases where pins don't match the latest revision
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rg --invert-match --file pinned releases | cut -d' ' -f1 | while read -r branch; do
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version="''${branch%-maintenance}"
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version="''${version//./-}"
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pushd "$tmp" > /dev/null
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git fetch origin "$branch" --depth 1 --quiet
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git checkout -b "$branch" FETCH_HEAD
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# only use cached builds, to avoid building Nix locally
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if default=$(nix-instantiate -A default 2> /dev/null) \
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&& doc=$(nix-store --query "$default" | rg doc) \
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&& nix-store --query --size "$doc" --store https://cache.nixos.org > /dev/null 2>&1
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then
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popd > /dev/null
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niv drop "nix_$version"
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niv add nixos/nix -n "nix_$version" -b "$branch"
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else
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popd > /dev/null
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fi
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done
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'';
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}
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