38 lines
850 B
Nix
38 lines
850 B
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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o = config.system.outputs;
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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 = {
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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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tree=${o.bootablerootdir}
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size=$(du -s --apparent-size --block-size 1024 $tree |cut -f1)
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# add 25% for filesystem overhead
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size=$(( 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 $tree $out
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'';
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};
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};
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}
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