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|
# This is an expression meant to be called from `./repart.nix`, it is NOT a
# NixOS module that can be imported.
{ lib
, runCommand
, python3
, black
, ruff
, mypy
, systemd
, fakeroot
, util-linux
, dosfstools
, mtools
, e2fsprogs
, squashfsTools
, erofs-utils
, btrfs-progs
, xfsprogs
# arguments
, name
, fileSystems
, partitions
, split
, seed
, definitionsDirectory
}:
let
amendRepartDefinitions = runCommand "amend-repart-definitions.py"
{
# TODO: ruff does not splice properly in nativeBuildInputs
depsBuildBuild = [ ruff ];
nativeBuildInputs = [ python3 black mypy ];
} ''
install ${./amend-repart-definitions.py} $out
patchShebangs --build $out
black --check --diff $out
ruff --line-length 88 $out
mypy --strict $out
'';
fileSystemToolMapping = {
"vfat" = [ dosfstools mtools ];
"ext4" = [ e2fsprogs.bin ];
"squashfs" = [ squashfsTools ];
"erofs" = [ erofs-utils ];
"btrfs" = [ btrfs-progs ];
"xfs" = [ xfsprogs ];
};
fileSystemTools = builtins.concatMap (f: fileSystemToolMapping."${f}") fileSystems;
in
runCommand name
{
nativeBuildInputs = [
systemd
fakeroot
util-linux
] ++ fileSystemTools;
} ''
amendedRepartDefinitions=$(${amendRepartDefinitions} ${partitions} ${definitionsDirectory})
mkdir -p $out
cd $out
unshare --map-root-user fakeroot systemd-repart \
--dry-run=no \
--empty=create \
--size=auto \
--seed="${seed}" \
--definitions="$amendedRepartDefinitions" \
--split="${lib.boolToString split}" \
--json=pretty \
image.raw \
| tee repart-output.json
''
|