From 6e8591a8d17cbd3a2142b1b2db7959ad55c1c3dc Mon Sep 17 00:00:00 2001
From: tilpner <git@tilpner.com>
Date: Mon, 4 Sep 2023 01:02:57 +0200
Subject: [PATCH] nixos/mimir: add extraFlags option

---
 nixos/modules/services/monitoring/mimir.nix | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/nixos/modules/services/monitoring/mimir.nix b/nixos/modules/services/monitoring/mimir.nix
index edca9b7be4ff..6ed139b22974 100644
--- a/nixos/modules/services/monitoring/mimir.nix
+++ b/nixos/modules/services/monitoring/mimir.nix
@@ -32,11 +32,21 @@ in {
       type = types.package;
       description = lib.mdDoc ''Mimir package to use.'';
     };
+
+    extraFlags = mkOption {
+      type = types.listOf types.str;
+      default = [];
+      example = [ "--config.expand-env=true" ];
+      description = lib.mdDoc ''
+        Specify a list of additional command line flags,
+        which get escaped and are then passed to Mimir.
+      '';
+    };
   };
 
   config = mkIf cfg.enable {
     # for mimirtool
-    environment.systemPackages = [ pkgs.mimir ];
+    environment.systemPackages = [ cfg.package ];
 
     assertions = [{
       assertion = (
@@ -60,7 +70,7 @@ in {
                else cfg.configFile;
       in
       {
-        ExecStart = "${cfg.package}/bin/mimir --config.file=${conf}";
+        ExecStart = "${cfg.package}/bin/mimir --config.file=${conf} ${escapeShellArgs cfg.extraFlags}";
         DynamicUser = true;
         Restart = "always";
         ProtectSystem = "full";