52 lines
1,012 B
Bash
52 lines
1,012 B
Bash
#! @bash@/bin/sh -e
|
|
|
|
default=$1
|
|
if test -z "$1"; then
|
|
echo "Syntax: grub-menu-builder.sh <DEFAULT-CONFIG>"
|
|
exit 1
|
|
fi
|
|
|
|
|
|
target=/boot/grub/menu.lst
|
|
tmp=$target.tmp
|
|
|
|
cat > $tmp << GRUBEND
|
|
# Automatically generated. DO NOT EDIT THIS FILE!
|
|
default=0
|
|
timeout=5
|
|
GRUBEND
|
|
|
|
addEntry() {
|
|
name="$1"
|
|
path="$2"
|
|
|
|
cat >> $tmp << GRUBEND
|
|
title $name
|
|
GRUBEND
|
|
|
|
#cat $path/menu.lst >> $tmp
|
|
|
|
grep -v "title \|default=\|timeout=" < $path/menu.lst >> $tmp
|
|
}
|
|
|
|
|
|
if test -n "$tmp"; then
|
|
addEntry "NixOS - Default" $default
|
|
fi
|
|
|
|
|
|
# Add all generations of the system profile to the menu, in reverse
|
|
# (most recent to least recent) order.
|
|
for generation in $(
|
|
(cd /nix/var/nix/profiles && ls -d system-*-link) \
|
|
| sed 's/system-\([0-9]\+\)-link/\1/' \
|
|
| sort -n -r); do
|
|
echo $generation
|
|
link=/nix/var/nix/profiles/system-$generation-link
|
|
date=$(stat --printf="%y\n" $link | sed 's/\..*//')
|
|
addEntry "NixOS - Configuration $generation ($date)" $link
|
|
|
|
done
|
|
|
|
|
|
cp $tmp $target
|