diff options
| -rw-r--r-- | hosts/sagittarius/auto-update.nix | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/hosts/sagittarius/auto-update.nix b/hosts/sagittarius/auto-update.nix index 4e8c2ac..fbc7dae 100644 --- a/hosts/sagittarius/auto-update.nix +++ b/hosts/sagittarius/auto-update.nix @@ -29,7 +29,7 @@ in enableStrictShellChecks = true; script = '' #!/bin/sh - set -xeu + set -eu SRCREPO="$1" if [ -z "$SRCREPO" ]; then @@ -43,7 +43,7 @@ in pushd "$TEMPDIR" TAGS="$(git tag --sort tag --list 'v*')" - LATESTTAG="$(echo "$TAGS" | head --lines 1)" + LATESTTAG="$(echo "$TAGS" | tail --lines 1)" if [ -z "$LATESTTAG" ]; then echo "Error: no release tags defined." >&2 @@ -53,6 +53,18 @@ in git fetch "$SRCREPO" "$LATESTTAG" git checkout FETCH_HEAD + CURRENT_REV="$(git rev-parse HEAD)" + mkdir -p /var/lib/auto-update/ + + if [ -e /var/lib/auto-update/last-commit ]; then + LAST_REV="$(cat /var/lib/auto-update/last-commit)" + if [ "$CURRENT_REV" = "$LAST_REV" ]; then + echo "System is already up to date. Exiting." >&2 + exit 0 + fi + fi + echo -n "$CURRENT_REV" > /var/lib/auto-update/last-commit + nixos-rebuild switch --flake .# popd |