97276fe650
It is important to keep the version as parsed by `builtins.parseDrvName` monotonic for packages that often switch between stable and unstable versions, for nix-env to be able to update them reliably. Let’s optionally use the version format described by RFC 107: https://github.com/NixOS/rfcs/pull/107 The downside is that it requires fetching more commits to be able to determine the latest tag.
113 lines
2.9 KiB
Nix
113 lines
2.9 KiB
Nix
{ lib
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, writeShellScript
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, coreutils
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, git
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, nix
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, common-updater-scripts
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}:
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# This is an updater for unstable packages that should always use the latest
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# commit.
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{ url ? null # The git url, if empty it will be set to src.url
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, branch ? null
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, stableVersion ? false # Use version format according to RFC 107 (i.e. LAST_TAG+date=YYYY-MM-DD)
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, tagPrefix ? "" # strip this prefix from a tag name when using stable version
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}:
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let
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updateScript = writeShellScript "unstable-update-script.sh" ''
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set -ex
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url=""
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branch=""
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use_stable_version=""
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tag_prefix=""
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while (( $# > 0 )); do
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flag="$1"
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shift 1
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case "$flag" in
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--url=*)
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url="''${flag#*=}"
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;;
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--branch=*)
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branch="''${flag#*=}"
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;;
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--use-stable-version)
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use_stable_version=1
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;;
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--tag-prefix=*)
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tag_prefix="''${flag#*=}"
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;;
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*)
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echo "$0: unknown option ‘''${flag}’"
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exit 1
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;;
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esac
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done
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# By default we set url to src.url
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if [[ -z "$url" ]]; then
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url="$(${nix}/bin/nix-instantiate $systemArg --eval -E \
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"with import ./. {}; $UPDATE_NIX_ATTR_PATH.src.url or $UPDATE_NIX_ATTR_PATH.src.meta.homepage" \
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| tr -d '"')"
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fi
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# Get info about HEAD from a shallow git clone
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tmpdir="$(${coreutils}/bin/mktemp -d)"
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cloneArgs=(
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--bare
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--depth=1
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)
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if [[ -n "$branch" ]]; then
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cloneArgs+=(--branch="$branch")
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fi
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${git}/bin/git clone "''${cloneArgs[@]}" "$url" "$tmpdir"
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pushd "$tmpdir"
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commit_date="$(${git}/bin/git show -s --pretty='format:%cs')"
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commit_sha="$(${git}/bin/git show -s --pretty='format:%H')"
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if [[ -z "$use_stable_version" ]]; then
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new_version="unstable-$commit_date"
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else
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depth=100
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while (( $depth < 10000 )); do
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last_tag="$(${git}/bin/git describe --tags --abbrev=0 2> /dev/null || true)"
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if [[ -n "$last_tag" ]]; then
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break
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fi
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${git}/bin/git fetch --depth="$depth" --tags
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depth=$(( $depth * 2 ))
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done
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if [[ -z "$last_tag" ]]; then
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echo "Cound not found a tag within last 10000 commits" > /dev/stderr
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exit 1
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fi
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if [[ -n "$tag_prefix" ]]; then
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last_tag="''${last_tag#$tag_prefix}"
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fi
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new_version="$last_tag+date=$commit_date"
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fi
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popd
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# ${coreutils}/bin/rm -rf "$tmpdir"
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# update the nix expression
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${common-updater-scripts}/bin/update-source-version \
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"$UPDATE_NIX_ATTR_PATH" \
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"$new_version" \
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--rev="$commit_sha"
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'';
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in [
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updateScript
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"--url=${builtins.toString url}"
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] ++ lib.optionals (branch != null) [
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"--branch=${branch}"
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] ++ lib.optionals stableVersion [
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"--use-stable-version"
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"--tag-prefix=${tagPrefix}"
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]
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