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pkgmgr/scripts/launcher.sh
Kevin Veen-Birkenbach dcbe16c5f0
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feat(launcher): enforce GitHub 403 retry for nix run
- Require retry_403.sh to exist and fail hard if missing
- Source retry helper unconditionally
- Run nix flake execution via run_with_github_403_retry
- Prevent transient GitHub API rate-limit failures during nix run

https://chatgpt.com/share/693ed83e-a2e8-800f-8c1b-d5d5afeaa6ad
2025-12-14 16:31:02 +01:00

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#!/usr/bin/env bash
set -euo pipefail
FLAKE_DIR="/usr/lib/package-manager"
NIX_LIB_DIR="${FLAKE_DIR}/nix/lib"
RETRY_LIB="${NIX_LIB_DIR}/retry_403.sh"
# ---------------------------------------------------------------------------
# Hard requirement: retry helper must exist (fail if missing)
# ---------------------------------------------------------------------------
if [[ ! -f "${RETRY_LIB}" ]]; then
echo "[launcher] ERROR: Required retry helper not found: ${RETRY_LIB}" >&2
exit 1
fi
# shellcheck source=/usr/lib/package-manager/nix/lib/retry_403.sh
source "${RETRY_LIB}"
# ---------------------------------------------------------------------------
# Try to ensure that "nix" is on PATH (common locations + container user)
# ---------------------------------------------------------------------------
if ! command -v nix >/dev/null 2>&1; then
CANDIDATES=(
"/nix/var/nix/profiles/default/bin/nix"
"${HOME:-/root}/.nix-profile/bin/nix"
"/home/nix/.nix-profile/bin/nix"
)
for candidate in "${CANDIDATES[@]}"; do
if [[ -x "$candidate" ]]; then
PATH="$(dirname "$candidate"):${PATH}"
export PATH
break
fi
done
fi
# ---------------------------------------------------------------------------
# If nix is still missing, try to run nix/init.sh once
# ---------------------------------------------------------------------------
if ! command -v nix >/dev/null 2>&1; then
if [[ -x "${FLAKE_DIR}/nix/init.sh" ]]; then
"${FLAKE_DIR}/nix/init.sh" || true
fi
fi
# ---------------------------------------------------------------------------
# Primary path: use Nix flake if available (with GitHub 403 retry)
# ---------------------------------------------------------------------------
if command -v nix >/dev/null 2>&1; then
exec run_with_github_403_retry nix run "${FLAKE_DIR}#pkgmgr" -- "$@"
fi
echo "[launcher] ERROR: 'nix' binary not found on PATH after init."
echo "[launcher] Nix is required to run pkgmgr (no Python fallback)."
exit 1