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source $stdenv/setup
sources_=($sources)
targets_=($targets)
objects=($objects)
symlinks=($symlinks)
# Remove the initial slash from a path, since genisofs likes it that way.
stripSlash() {
res="$1"
if test "${res:0:1}" = /; then res=${res:1}; fi
}
# Escape potential equal signs (=) with backslash (\=)
escapeEquals() {
echo "$1" | sed -e 's/\\/\\\\/g' -e 's/=/\\=/g'
}
# Queues an file/directory to be placed on the ISO.
# An entry consists of a local source path (2) and
# a destination path on the ISO (1).
addPath() {
target="$1"
source="$2"
echo "$(escapeEquals "$target")=$(escapeEquals "$source")" >> pathlist
}
stripSlash "$bootImage"; bootImage="$res"
if test -n "$bootable"; then
# The -boot-info-table option modifies the $bootImage file, so
# find it in `contents' and make a copy of it (since the original
# is read-only in the Nix store...).
for ((i = 0; i < ${#targets_[@]}; i++)); do
stripSlash "${targets_[$i]}"
if test "$res" = "$bootImage"; then
echo "copying the boot image ${sources_[$i]}"
cp "${sources_[$i]}" boot.img
chmod u+w boot.img
sources_[$i]=boot.img
fi
done
isoBootFlags="-eltorito-boot ${bootImage}
-eltorito-catalog .boot.cat
-no-emul-boot -boot-load-size 4 -boot-info-table
--sort-weight 1 /isolinux" # Make sure isolinux is near the beginning of the ISO
fi
if test -n "$usbBootable"; then
usbBootFlags="-isohybrid-mbr ${isohybridMbrImage}"
fi
if test -n "$efiBootable"; then
efiBootFlags="-eltorito-alt-boot
-e $efiBootImage
-no-emul-boot
-isohybrid-gpt-basdat"
fi
touch pathlist
# Add the individual files.
for ((i = 0; i < ${#targets_[@]}; i++)); do
stripSlash "${targets_[$i]}"
addPath "$res" "${sources_[$i]}"
done
# Add the closures of the top-level store objects.
for i in $(< $closureInfo/store-paths); do
addPath "${i:1}" "$i"
done
# Also include a manifest of the closures in a format suitable for
# nix-store --load-db.
if [[ ${#objects[*]} != 0 ]]; then
cp $closureInfo/registration nix-path-registration
addPath "nix-path-registration" "nix-path-registration"
fi
# Add symlinks to the top-level store objects.
for ((n = 0; n < ${#objects[*]}; n++)); do
object=${objects[$n]}
symlink=${symlinks[$n]}
if test "$symlink" != "none"; then
mkdir -p $(dirname ./$symlink)
ln -s $object ./$symlink
addPath "$symlink" "./$symlink"
fi
done
mkdir -p $out/iso
xorriso="xorriso
-as mkisofs
-iso-level 3
-volid ${volumeID}
-appid nixos
-publisher nixos
-graft-points
-full-iso9660-filenames
-joliet
${isoBootFlags}
${usbBootFlags}
${efiBootFlags}
-r
-path-list pathlist
--sort-weight 0 /
"
$xorriso -output $out/iso/$isoName
if test -n "$usbBootable"; then
echo "Making image hybrid..."
if test -n "$efiBootable"; then
isohybrid --uefi $out/iso/$isoName
else
isohybrid $out/iso/$isoName
fi
fi
if test -n "$compressImage"; then
echo "Compressing image..."
zstd -T$NIX_BUILD_CORES --rm $out/iso/$isoName
fi
mkdir -p $out/nix-support
echo $system > $out/nix-support/system
if test -n "$compressImage"; then
echo "file iso $out/iso/$isoName.zst" >> $out/nix-support/hydra-build-products
else
echo "file iso $out/iso/$isoName" >> $out/nix-support/hydra-build-products
fi
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