46 lines
1.2 KiB
Nix
46 lines
1.2 KiB
Nix
{
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config
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, pkgs
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, lib
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, ...
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}:
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let
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inherit (lib) mkIf mkOption types;
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in
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{
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imports = [
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./initramfs.nix
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];
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config = mkIf (config.rootfsType == "ext4") {
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kernel.config = {
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EXT4_FS = "y";
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EXT4_USE_FOR_EXT2 = "y";
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FS_ENCRYPTION = "y";
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};
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boot.initramfs.enable = true;
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system.outputs = rec {
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systemConfiguration =
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pkgs.systemconfig config.filesystem.contents;
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rootfs =
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let
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inherit (pkgs.pkgsBuildBuild) runCommand e2fsprogs;
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in runCommand "mkfs.ext4" {
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depsBuildBuild = [ e2fsprogs ];
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} ''
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mkdir -p $TMPDIR/empty/nix/store/ $TMPDIR/empty/secrets
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cp ${systemConfiguration}/bin/activate $TMPDIR/empty/activate
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ln -s ${pkgs.s6-init-bin}/bin/init $TMPDIR/empty/init
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mkdir -p $TMPDIR/empty/nix/store
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for path in $(cat ${systemConfiguration}/etc/nix-store-paths) ; do
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(cd $TMPDIR/empty && cp -a $path .$path)
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done
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size=$(du -s --apparent-size --block-size 1024 $TMPDIR/empty |cut -f1)
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# add 25% for filesystem overhead
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size=$(( 5 * $size / 4))
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dd if=/dev/zero of=$out bs=1024 count=$size
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mke2fs -t ext4 -j -d $TMPDIR/empty $out
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'';
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};
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};
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}
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