From 0c68e23f5238b60dbbd5bf994a08060bd311f89d Mon Sep 17 00:00:00 2001
From: Vladimir Serov <me@cab404.ru>
Date: Mon, 14 Mar 2022 07:11:05 +0300
Subject: [PATCH] nixos/modules/version: remove unnecessary quoting

(In cases it is unnecessary)
---
 nixos/modules/misc/version.nix | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/nixos/modules/misc/version.nix b/nixos/modules/misc/version.nix
index 6c072021ed8..d825f4beb30 100644
--- a/nixos/modules/misc/version.nix
+++ b/nixos/modules/misc/version.nix
@@ -8,8 +8,12 @@ let
     concatStringsSep mapAttrsToList toLower
     literalExpression mkRenamedOptionModule mkDefault mkOption trivial types;
 
+  needsEscaping = s: null != builtins.match "[a-zA-Z0-9]+" s;
+  escapeIfNeccessary = s: if needsEscaping s then s else ''"${lib.escape [ "\$" "\"" "\\" "\`" ] s}"'';
   attrsToText = attrs:
-    concatStringsSep "\n" (mapAttrsToList (n: v: ''${n}="${toString v}"'') attrs);
+    concatStringsSep "\n" (
+      mapAttrsToList (n: v: ''${n}=${escapeIfNeccessary (toString v)}'') attrs
+    );
 
 in
 {