vim: don't overwrite syntax-highlighting on deleted lines in diff

hosts/tor/network.nix

@@ -1,4 +1,11 @@
-{...}: {
+{lib, ...}: {
+  networking = {
+    # Use dns.caspervk.net IPv6 address ::2 for uncensored DNS
+    nameservers = lib.mkForce [
+      "2a01:4f8:1c0c:70d1::2#dns.caspervk.net"
+    ];
+  };
+
   systemd.network = {
     networks."10-lan" = {
       # IPv4 settings are from `sudo dhcpcd --test`.

modules/base/network.nix

@@ -10,7 +10,10 @@
       # Do not spam dmesg/journalctl with refused connections
       logRefusedConnections = false;
     };
-    nameservers = ["159.69.4.2#dns.caspervk.net" "2a01:4f8:1c0c:70d1::1#dns.caspervk.net"];
+    nameservers = [
+      "159.69.4.2#dns.caspervk.net"
+      "2a01:4f8:1c0c:70d1::1#dns.caspervk.net"
+    ];
     search = ["caspervk.net"];
   };
 

modules/base/vim.nix

@@ -211,6 +211,8 @@
                     -- Less pronounced indent lines
                     IblIndent = { fg = theme.ui.bg_p2 },
                     IblScope = { fg = theme.ui.whitespace },
+                    -- Don't overwrite syntax-highlighting on deleted lines
+                    DiffDelete = { fg = "none" },
                   }
                 end,
               })