nixos/modules/tasks/filesystems/unionfs-fuse.nix

   1 { config, pkgs, lib, ... }:
   2
   3 {
   4   config = lib.mkMerge [
   5
   6     (lib.mkIf (config.boot.initrd.supportedFilesystems.unionfs-fuse or false) {
   7       boot.initrd.kernelModules = [ "fuse" ];
   8
   9       boot.initrd.extraUtilsCommands = lib.mkIf (!config.boot.initrd.systemd.enable) ''
  10         copy_bin_and_libs ${pkgs.fuse}/sbin/mount.fuse
  11         copy_bin_and_libs ${pkgs.unionfs-fuse}/bin/unionfs
  12         substitute ${pkgs.unionfs-fuse}/sbin/mount.unionfs-fuse $out/bin/mount.unionfs-fuse \
  13           --replace '${pkgs.bash}/bin/bash' /bin/sh \
  14           --replace '${pkgs.fuse}/sbin' /bin \
  15           --replace '${pkgs.unionfs-fuse}/bin' /bin
  16         chmod +x $out/bin/mount.unionfs-fuse
  17       '';
  18
  19       boot.initrd.postDeviceCommands = lib.mkIf (!config.boot.initrd.systemd.enable) ''
  20           # Hacky!!! fuse hard-codes the path to mount
  21           mkdir -p /nix/store/eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee-${pkgs.util-linux.name}-bin/bin
  22           ln -s $(which mount) /nix/store/eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee-${pkgs.util-linux.name}-bin/bin
  23           ln -s $(which umount) /nix/store/eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee-${pkgs.util-linux.name}-bin/bin
  24         '';
  25
  26       boot.initrd.systemd.extraBin = {
  27         "mount.fuse" = "${pkgs.fuse}/bin/mount.fuse";
  28         "unionfs" = "${pkgs.unionfs-fuse}/bin/unionfs";
  29         "mount.unionfs-fuse" = pkgs.runCommand "mount.unionfs-fuse" {} ''
  30           substitute ${pkgs.unionfs-fuse}/sbin/mount.unionfs-fuse $out \
  31             --replace '${pkgs.bash}/bin/bash' /bin/sh \
  32             --replace '${pkgs.fuse}/sbin' /bin \
  33             --replace '${pkgs.unionfs-fuse}/bin' /bin
  34         '';
  35       };
  36     })
  37
  38     (lib.mkIf (config.boot.supportedFilesystems.unionfs-fuse or false) {
  39       system.fsPackages = [ pkgs.unionfs-fuse ];
  40     })
  41
  42   ];
  43 }