nvimpager: allow access to vimrc

hosts/common/programs/nvimpager.nix

@@ -1,4 +1,7 @@
-{ config, pkgs, ... }:
+{ config, lib, pkgs, ... }:
+let
+  cfg = config.sane.programs.nvimpager;
+in
 {
   sane.programs.nvimpager = {
     packageUnwrapped = (pkgs.nvimpager.override {
@@ -10,6 +13,9 @@
 
     suggestedPrograms = [ "neovim" ];
 
+    sandbox.extraHomePaths = [
+      ".config/nvim"
+    ];
     sandbox.whitelistWayland = true;  # for system clipboard integration
 
     env.MANPAGER = "nvimpager";
@@ -21,4 +27,8 @@
     env.MANWIDTH = "999";
     env.MANROFFOPT = "-c";
   };
+
+  sane.programs.man-db.sandbox.extraHomePaths = lib.mkIf cfg.enabled [
+    ".config/nvim"
+  ];
 }