From f6c476a07f2e7d1e8671cfe01a749d7ca5a0e4a2 Mon Sep 17 00:00:00 2001
From: Bruno BELANYI <bruno@belanyi.fr>
Date: Tue, 7 May 2024 11:20:40 +0000
Subject: [PATCH] nixos: services: postgres: add post-upgrade advice

---
 modules/nixos/services/postgresql/default.nix | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/modules/nixos/services/postgresql/default.nix b/modules/nixos/services/postgresql/default.nix
index 7559bb6..bbe46d4 100644
--- a/modules/nixos/services/postgresql/default.nix
+++ b/modules/nixos/services/postgresql/default.nix
@@ -58,6 +58,13 @@ in
               --old-datadir "$OLDDATA" --new-datadir "$NEWDATA" \
               --old-bindir "$OLDBIN" --new-bindir "$NEWBIN" \
               "$@"
+
+            cat << EOF
+              Run the following commands after setting:
+              services.postgresql.package = pkgs.postgresql_${lib.versions.major newPackage.version}
+                  sudo -u postgres vacuumdb --all --analyze-in-stages
+                  ${newData}/delete_old_cluster.sh
+            EOF
           '')
         ];
     })