chore: clean up

pkgs/rootfs/mkinitrd.nix

@@ -1,23 +1,66 @@
 {
   pkgs,
-  stdenvNoCC,
   patosPkgs,
-  version,
+  runCommand,
   ...
 }:
-let
-  pname = "patos-ramdisk";
-in
-stdenvNoCC.mkDerivation (finalAttrs: {
-  inherit version;
-  inherit pname;
-
+runCommand "patos-initrd" {
   buildInputs = with pkgs; [
     cpio
     xz
   ];
+}
+''
+echo "Building initram disk"
+mkdir -p $out/root
+pushd $out/root
 
-  rootfs = patosPkgs.rootfs.out;
+### copy rootfs
+cp -prP ${patosPkgs.rootfs}/* .
+find . -type d -exec chmod 755 {} \;
+mkdir sysroot
 
-  builder = ./mkinitrd.sh;
-})
+### create directories
+ln -sf ../usr/lib/systemd/systemd init
+
+### Create needed files
+echo patos > ./etc/hostname
+
+ln -sf /etc/os-release ./etc/initrd-release
+
+# set default target to initrd inside initrd
+ln -sf initrd.target ./usr/lib/systemd/system/default.target
+
+# bind mount /run to /sysroot/run
+cat <<EOF > ./usr/lib/systemd/system/sysroot-run.mount
+[Unit]
+Before=initrd-fs.target
+DefaultDependencies=false
+
+[Mount]
+Options=bind
+What=/run
+Where=/sysroot/run
+EOF
+mkdir ./usr/lib/systemd/system/initrd-fs.target.requires/
+ln -sf ../sysroot-run.mount ./usr/lib/systemd/system/initrd-fs.target.requires/sysroot-run.mount
+
+# repart: generate crypttab and fstab under /run
+mkdir ./usr/lib/systemd/system/systemd-repart.service.d
+cat <<EOF > ./usr/lib/systemd/system/systemd-repart.service.d/override.conf
+[Unit]
+After=sysroot-run.mount
+Requires=sysroot-run.mount
+
+[Service]
+Environment=SYSTEMD_REPART_MKFS_OPTIONS_BTRFS=--nodiscard
+ExecStart=
+ExecStart=systemd-repart --dry-run=no --generate-crypttab=/run/crypttab --generate-fstab=/run/fstab
+EOF
+
+# gen initrd
+find . -print0 | cpio --null --owner=root:root -o --format=newc | xz -9 --check=crc32 > ../initrd.xz
+
+popd
+rm -rf $out/root
+''