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{
lib,
stdenv,
callPackage,
closureInfo,
xorriso,
syslinux,
libossp_uuid,
squashfs-tools,
# The file name of the resulting ISO image.
isoName ? "cd.iso",
# The files and directories to be placed in the ISO file system.
# This is a list of attribute sets {source, target} where `source'
# is the file system object (regular file or directory) to be
# grafted in the file system at path `target'.
contents,
# In addition to `contents', the closure of the store paths listed
# in `storeContents' are also placed in the Nix store of the CD.
# This is a list of attribute sets {object, symlink} where `object'
# is a store path whose closure will be copied, and `symlink' is a
# symlink to `object' that will be added to the CD.
storeContents ? [ ],
# In addition to `contents', the closure of the store paths listed
# in `squashfsContents' is compressed as squashfs and the result is
# placed in /nix-store.squashfs on the CD.
# FIXME: This is a performance optimization to avoid Hydra copying
# the squashfs between builders and should be removed when Hydra
# is smarter about scheduling.
squashfsContents ? [ ],
# Compression settings for squashfs
squashfsCompression ? "xz -Xdict-size 100%",
# Whether this should be an El-Torito bootable CD.
bootable ? false,
# Whether this should be an efi-bootable El-Torito CD.
efiBootable ? false,
# Whether this should be an hybrid CD (bootable from USB as well as CD).
usbBootable ? false,
# The path (in the ISO file system) of the boot image.
bootImage ? "",
# The path (in the ISO file system) of the efi boot image.
efiBootImage ? "",
# The path (outside the ISO file system) of the isohybrid-mbr image.
isohybridMbrImage ? "",
# Whether to compress the resulting ISO image with zstd.
compressImage ? false,
zstd,
# The volume ID.
volumeID ? "",
}:
assert bootable -> bootImage != "";
assert efiBootable -> efiBootImage != "";
assert usbBootable -> isohybridMbrImage != "";
let
needSquashfs = squashfsContents != [ ];
makeSquashfsDrv = callPackage ./make-squashfs.nix {
storeContents = squashfsContents;
comp = squashfsCompression;
};
in
stdenv.mkDerivation {
name = isoName;
__structuredAttrs = true;
# the image will be self-contained so we can drop references
# to the closure that was used to build it
unsafeDiscardReferences.out = true;
buildCommandPath = ./make-iso9660-image.sh;
nativeBuildInputs = [
xorriso
syslinux
zstd
libossp_uuid
]
++ lib.optionals needSquashfs makeSquashfsDrv.nativeBuildInputs;
inherit
isoName
bootable
bootImage
compressImage
volumeID
efiBootImage
efiBootable
isohybridMbrImage
usbBootable
;
sources = map (x: x.source) contents;
targets = map (x: x.target) contents;
objects = map (x: x.object) storeContents;
symlinks = map (x: x.symlink) storeContents;
squashfsCommand = lib.optionalString needSquashfs makeSquashfsDrv.buildCommand;
# For obtaining the closure of `storeContents'.
closureInfo = closureInfo { rootPaths = map (x: x.object) storeContents; };
}
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