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Add resilient Nix download/fallback settings for hub update flows

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This commit is contained in:
copilot-swe-agent[bot]
2026-05-27 16:02:37 +00:00
committed by GitHub
parent fae57c0375
commit 15cd07d12f
2 changed files with 32 additions and 5 deletions
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configuration.nix
+7
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@@ -26,6 +26,13 @@
nix.settings = { nix.settings = {
experimental-features = [ "nix-command" "flakes" ]; experimental-features = [ "nix-command" "flakes" ];
download-buffer-size = 524288000; download-buffer-size = 524288000;
# Network resilience for cache.nixos.org (Fastly) flakiness.
connect-timeout = 10; # fail-fast on dead TCP connects (default: 0 = unlimited)
stalled-download-timeout = 90; # default 300s; retry sooner on stalled transfers
download-attempts = 7; # default 5
http-connections = 25; # cap concurrency (helps MTU/middlebox paths)
fallback = true; # build locally if a substitute can't be fetched
}; };
# ── Networking ────────────────────────────────────────────── # ── Networking ──────────────────────────────────────────────
modules/core/sovran-hub.nix
+25 -5
View File
@@ -138,7 +138,11 @@ let
RC=0 RC=0
echo "── Step 1/3: nix flake update ────────────────────" echo "── Step 1/3: nix flake update ────────────────────"
if ! nix flake update --flake /etc/nixos --print-build-logs 2>&1; then if ! nix flake update --flake /etc/nixos --print-build-logs \
--option connect-timeout 10 \
--option stalled-download-timeout 90 \
--option download-attempts 7 \
--option fallback true 2>&1; then
echo "[ERROR] nix flake update failed" echo "[ERROR] nix flake update failed"
RC=1 RC=1
fi fi
@@ -146,7 +150,11 @@ let
if [ "$RC" -eq 0 ]; then if [ "$RC" -eq 0 ]; then
echo "── Step 2/3: nixos-rebuild ──────────────────────────" echo "── Step 2/3: nixos-rebuild ──────────────────────────"
SWITCH_OUT=$(nixos-rebuild switch --flake /etc/nixos --print-build-logs 2>&1) SWITCH_OUT=$(nixos-rebuild switch --flake /etc/nixos --print-build-logs \
--option connect-timeout 10 \
--option stalled-download-timeout 90 \
--option download-attempts 7 \
--option fallback true 2>&1)
SWITCH_RC=$? SWITCH_RC=$?
echo "$SWITCH_OUT" echo "$SWITCH_OUT"
if [ "$SWITCH_RC" -eq 0 ]; then if [ "$SWITCH_RC" -eq 0 ]; then
@@ -155,7 +163,11 @@ let
echo "" echo ""
echo " ✓ Build succeeded — a reboot is required to apply this update" echo " ✓ Build succeeded — a reboot is required to apply this update"
echo " (Critical system components changed; running nixos-rebuild boot instead)" echo " (Critical system components changed; running nixos-rebuild boot instead)"
if nixos-rebuild boot --flake /etc/nixos --print-build-logs 2>&1; then if nixos-rebuild boot --flake /etc/nixos --print-build-logs \
--option connect-timeout 10 \
--option stalled-download-timeout 90 \
--option download-attempts 7 \
--option fallback true 2>&1; then
echo "REBOOT_REQUIRED" > "$STATUS" echo "REBOOT_REQUIRED" > "$STATUS"
exit 0 exit 0
else else
@@ -209,7 +221,11 @@ let
echo "══════════════════════════════════════════════════" echo "══════════════════════════════════════════════════"
echo "" echo ""
echo "── Rebuilding system configuration ──────────────" echo "── Rebuilding system configuration ──────────────"
SWITCH_OUT=$(nixos-rebuild switch --flake /etc/nixos --print-build-logs 2>&1) SWITCH_OUT=$(nixos-rebuild switch --flake /etc/nixos --print-build-logs \
--option connect-timeout 10 \
--option stalled-download-timeout 90 \
--option download-attempts 7 \
--option fallback true 2>&1)
SWITCH_RC=$? SWITCH_RC=$?
echo "$SWITCH_OUT" echo "$SWITCH_OUT"
if [ "$SWITCH_RC" -eq 0 ]; then if [ "$SWITCH_RC" -eq 0 ]; then
@@ -222,7 +238,11 @@ let
echo "" echo ""
echo " ✓ Build succeeded — a reboot is required to apply this rebuild" echo " ✓ Build succeeded — a reboot is required to apply this rebuild"
echo " (Critical system components changed; running nixos-rebuild boot instead)" echo " (Critical system components changed; running nixos-rebuild boot instead)"
if nixos-rebuild boot --flake /etc/nixos --print-build-logs 2>&1; then if nixos-rebuild boot --flake /etc/nixos --print-build-logs \
--option connect-timeout 10 \
--option stalled-download-timeout 90 \
--option download-attempts 7 \
--option fallback true 2>&1; then
echo "REBOOT_REQUIRED" > "$STATUS" echo "REBOOT_REQUIRED" > "$STATUS"
else else
echo "[ERROR] nixos-rebuild boot also failed" echo "[ERROR] nixos-rebuild boot also failed"