f07f221f0e
The old GRUB menu builder script is quite slow, typically taking several seconds. This is a real annoyance since it's run every time you switch to a new configuration. Therefore this patch replaces the Bash script with a much faster Perl script. In a VirtualBox test, the execution time went from 2.7s to 0.1s. The Perl version is also more correct because it uses XML to get the GRUB configuration (through builtins.toXML), so there are no shell escaping issues. The new script currently lacks support for subconfigurations defined through "nesting.children".
*** NixOS *** NixOS is a Linux distribution based on the purely functional package management system Nix. More information can be found at http://nixos.org/nixos and in the manual in doc/manual.