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# usage: nix-instantiate --eval --json --strict example | jq -r .
with import <nixpkgs/lib>;
with builtins;
let
f = q: x: fun.${x.type} q x;
fun.filesystem = q: x: ''
mkfs.${x.format} ${q.device}
'';
fun.luks = q: x: ''
cryptsetup -q luksFormat ${q.device} ${x.keyfile}
cryptsetup luksOpen ${q.device} ${x.name} --key-file ${x.keyfile}
${f { device = "/dev/mapper/${x.name}"; } x.content}
'';
fun.lv = q: x: ''
lvcreate -L ${x.size} -n ${q.name} ${q.vgname}
${f { device = "/dev/${q.vgname}/${q.name}"; } x.content}
'';
fun.lvm = q: x: ''
pvcreate ${q.device}
vgcreate ${x.name} ${q.device}
${concatStrings (mapAttrsToList (name: f { inherit name; vgname = x.name; }) x.lvs)}
'';
fun.partition = q: x: ''
parted -s ${q.device} mkpart ${x.part-type} ${x.fs-type or ""} ${x.start} ${x.end}
${optionalString (x.bootable or false) ''
parted -s ${q.device} set ${toString q.index} boot on
''}
${f { device = q.device + toString q.index; } x.content}
'';
fun.table = q: x: ''
parted -s -a optimal ${q.device} mklabel ${x.format}
${concatStrings (imap (index: f (q // { inherit index; })) x.partitions)}
'';
in
f { device = "/dev/sda"; } (import ./config.nix)
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