home/git: preexec maintenance with repo discovery script

home/programs/git/default.nix

@@ -333,6 +333,35 @@ in
     })
   ];
 
+  systemd.user.services."git-maintenance@".Service = lib.mkIf cfg.maintenance.enable {
+    ExecStartPre = let
+      repoDirs = lib.escapeShellArgs [
+        "${config.home.homeDirectory}/git"
+        "${config.home.homeDirectory}/work"
+        "${config.home.homeDirectory}/pvv"
+      ];
+
+      script = pkgs.writeShellApplication {
+        name = "discover-git-maintenance-repos";
+        text = ''
+          {
+            echo "[maintenance]"
+            for repoLocation in ${repoDirs}; do
+              for repo in "$repoLocation"/*/.git; do
+                echo "repo = $(realpath "''${repo%"/.git"}")"
+              done
+            done
+          } > "$1"
+        '';
+      };
+    in "${lib.getExe script} %t/maintenance-repos";
+
+    ExecStart = lib.mkForce ''
+      "${lib.getExe cfg.package}" -c include.path="%t/maintenance-repos" for-each-repo --keep-going --config=maintenance.repo maintenance run --schedule=%i
+    '';
+  };
+
+
   home.packages = [
     (pkgs.writeShellApplication {
       name = "git-tcommit";