90 lines
1.8 KiB
Bash
90 lines
1.8 KiB
Bash
#! @bash@/bin/sh -e
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export PATH=/empty
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for i in @path@; do PATH=$PATH:$i/bin; done
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default=$1
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if test -z "$1"; then
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echo "Syntax: grub-menu-builder.sh <DEFAULT-CONFIG>"
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exit 1
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fi
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target=/boot/grub/menu.lst
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tmp=$target.tmp
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cat > $tmp << GRUBEND
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# Automatically generated. DO NOT EDIT THIS FILE!
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default=0
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timeout=5
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GRUBEND
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addEntry() {
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local name="$1"
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local path="$2"
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if ! test -e $path/kernel -a -e $path/initrd; then
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return
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fi
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local kernel=$(readlink -f $path/kernel)
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local initrd=$(readlink -f $path/initrd)
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if test -n "@copyKernels@"; then
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local kernel2=/boot/kernels/$(echo $kernel | sed 's^/^-^g')
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if ! test -e $kernel2; then
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cp $kernel $kernel2
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fi
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kernel=$kernel2
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local initrd2=/boot/kernels/$(echo $initrd | sed 's^/^-^g')
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if ! test -e $initrd2; then
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cp $initrd $initrd2
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fi
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initrd=$initrd2
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fi
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cat >> $tmp << GRUBEND
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title $name
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kernel $kernel systemConfig=$(readlink -f $path) init=$(readlink -f $path/init) $(cat $path/kernel-params)
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initrd $initrd
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GRUBEND
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}
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rm -rf /boot/kernels
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if test -n "@copyKernels@"; then
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mkdir -p /boot/kernels
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fi
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if test -n "$tmp"; then
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addEntry "NixOS - Default" $default
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fi
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# Additional entries specified verbatim by the configuration.
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cat >> $tmp <<EOF
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@extraGrubEntries@
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EOF
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# Add all generations of the system profile to the menu, in reverse
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# (most recent to least recent) order.
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for generation in $(
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(cd /nix/var/nix/profiles && ls -d system-*-link) \
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| sed 's/system-\([0-9]\+\)-link/\1/' \
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| sort -n -r); do
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echo $generation
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link=/nix/var/nix/profiles/system-$generation-link
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date=$(stat --printf="%y\n" $link | sed 's/\..*//')
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addEntry "NixOS - Configuration $generation ($date)" $link
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done
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cp $tmp $target
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