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-rw-r--r--nixos/modules/services/databases/postgresql.nix14
1 files changed, 9 insertions, 5 deletions
diff --git a/nixos/modules/services/databases/postgresql.nix b/nixos/modules/services/databases/postgresql.nix
index 7bbe1ad225955..16f76248b3a0d 100644
--- a/nixos/modules/services/databases/postgresql.nix
+++ b/nixos/modules/services/databases/postgresql.nix
@@ -42,6 +42,8 @@ in
 
       enable = mkEnableOption (lib.mdDoc "PostgreSQL Server");
 
+      enableJIT = mkEnableOption (lib.mdDoc "JIT support");
+
       package = mkOption {
         type = types.package;
         example = literalExpression "pkgs.postgresql_11";
@@ -435,19 +437,21 @@ in
         log_line_prefix = cfg.logLinePrefix;
         listen_addresses = if cfg.enableTCPIP then "*" else "localhost";
         port = cfg.port;
+        jit = mkDefault (if cfg.enableJIT then "on" else "off");
       };
 
     services.postgresql.package = let
         mkThrow = ver: throw "postgresql_${ver} was removed, please upgrade your postgresql version.";
+        base = if versionAtLeast config.system.stateVersion "22.05" then pkgs.postgresql_14
+            else if versionAtLeast config.system.stateVersion "21.11" then pkgs.postgresql_13
+            else if versionAtLeast config.system.stateVersion "20.03" then pkgs.postgresql_11
+            else if versionAtLeast config.system.stateVersion "17.09" then mkThrow "9_6"
+            else mkThrow "9_5";
     in
       # Note: when changing the default, make it conditional on
       # ‘system.stateVersion’ to maintain compatibility with existing
       # systems!
-      mkDefault (if versionAtLeast config.system.stateVersion "22.05" then pkgs.postgresql_14
-            else if versionAtLeast config.system.stateVersion "21.11" then pkgs.postgresql_13
-            else if versionAtLeast config.system.stateVersion "20.03" then pkgs.postgresql_11
-            else if versionAtLeast config.system.stateVersion "17.09" then mkThrow "9_6"
-            else mkThrow "9_5");
+      mkDefault (if cfg.enableJIT then base.withJIT else base);
 
     services.postgresql.dataDir = mkDefault "/var/lib/postgresql/${cfg.package.psqlSchema}";