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 ${bootImage} -eltorito-catalog .boot.cat -no-emul-boot -boot-load-size 4 -boot-info-table" fi if test -n "$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. storePaths=$(perl $pathsFromGraph closure-*) for i in $storePaths; do addPath "${i:1}" "$i" done # Also include a manifest of the closures in a format suitable for # nix-store --load-db. if [ -n "$object" ]; then printRegistration=1 perl $pathsFromGraph closure-* > 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 ${isoBootFlags} ${usbBootFlags} ${efiBootFlags} -r -path-list pathlist --sort-weight 0 / --sort-weight 1 /isolinux" # Make sure isolinux is near the beginning of the ISO $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..." bzip2 $out/iso/$isoName fi mkdir -p $out/nix-support echo $system > $out/nix-support/system