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