From c62cb82e653c98eb49d9da2809d3ce12514877c7 Mon Sep 17 00:00:00 2001
From: Karl Hallsby <karl@hallsby.com>
Date: Sat, 27 Jun 2020 02:18:50 +0200
Subject: [PATCH] mbsync: per-account groups can have additional patterns

Gave the
`accounts.email.accounts.<name>.mbsync.groups.<gname>.channel.<cname>`
set a `patterns` option, which will allow for greater customization
and filtering of the master maildir to sync to the slave maildir.
---
 modules/programs/mbsync-accounts.nix | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/modules/programs/mbsync-accounts.nix b/modules/programs/mbsync-accounts.nix
index 3d3a44890..3b26455db 100644
--- a/modules/programs/mbsync-accounts.nix
+++ b/modules/programs/mbsync-accounts.nix
@@ -76,6 +76,19 @@ let
           <literal>INBOX</literal>.
         '';
       };
+
+      patterns = mkOption {
+        type = types.listOf types.str;
+        default = [ ];
+        example = [ "INBOX" ];
+        description = ''
+          Instead of synchronizing <emphasis>just</emphasis> the mailboxes that
+          match the <literal>masterPattern</literal>, use it as a prefix which is
+          not matched against the patterns, and is not affected by mailbox list
+          overrides.
+        '';
+      };
+
     };
   };