53 lines
1.3 KiB
Bash
53 lines
1.3 KiB
Bash
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#!/usr/bin/env bash
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set -euo pipefail
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if [[ -n "${PKGMGR_NIX_RETRY_403_SH:-}" ]]; then
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return 0
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fi
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PKGMGR_NIX_RETRY_403_SH=1
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# Retry only when we see the GitHub API rate limit 403 error during nix flake evaluation.
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# Retries 7 times with delays: 10, 30, 50, 80, 130, 210, 420 seconds.
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run_with_github_403_retry() {
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local -a delays=(10 30 50 80 130 210 420)
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local attempt=0
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local max_retries="${#delays[@]}"
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while true; do
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local err tmp
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tmp="$(mktemp -t nix-err.XXXXXX)"
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err=0
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# Run the command; capture stderr for inspection while preserving stdout.
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if "$@" 2>"$tmp"; then
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rm -f "$tmp"
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return 0
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else
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err=$?
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fi
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# Only retry on the specific GitHub API rate limit 403 case.
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if grep -qE 'HTTP error 403' "$tmp" && grep -qiE 'API rate limit exceeded|api\.github\.com' "$tmp"; then
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if (( attempt >= max_retries )); then
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cat "$tmp" >&2
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rm -f "$tmp"
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return "$err"
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fi
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local sleep_s="${delays[$attempt]}"
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attempt=$((attempt + 1))
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echo "[nix-retry] GitHub API rate-limit (403). Retry ${attempt}/${max_retries} in ${sleep_s}s: $*" >&2
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cat "$tmp" >&2
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rm -f "$tmp"
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sleep "$sleep_s"
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continue
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fi
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# Not our retry case -> fail fast with original stderr.
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cat "$tmp" >&2
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rm -f "$tmp"
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return "$err"
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done
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}
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