Add support for partitioning btrfs volumes

lib/modules/fileSystems.nix

@@ -1,14 +1,59 @@
 { lib, config, ... }:
 let
   inherit (lib) types mkOption;
-in {
+  cfg = config.valhalla.fileSystems;
+
+  mountType = types.submodule (
+    { config, name, ... }: {
+      options = {
+        device = mkOption {
+          type = types.nullOr types.str;
+          description = "The device to mount.";
+          default = null;
+        };
+
+        mountPoint = mkOption {
+          type = types.str;
+          description = "The path to mount the device to.";
+          default = name;
+        };
+
+        fsType = mkOption {
+          type = types.nullOr types.str;
+          description = "The file system type of the mount.";
+          default = null;
+        };
+
+        options = mkOption {
+          type = types.listOf types.str;
+          description = "The options of the mount.";
+          default = [ ];
+        };
+      };
+    }
+  );
+in
+{
   imports = [
-    ./partition/disks.nix
+    ./fileSystems/btrfs.nix
+    ./fileSystems/disks.nix
   ];
 
   options = {
     valhalla = {
       fileSystems = {
+        rootDir = mkOption {
+          type = types.str;
+          description = "The root of the installation directory to mount disks into.";
+          default = "/mnt";
+        };
+
+        mounts = mkOption {
+          type = types.attrsOf mountType;
+          description = "The devices to mount.";
+          default = { };
+        };
+
         script = mkOption {
           type = types.str;
           description = "The script for preparing the system's mounts.";
@@ -20,7 +65,50 @@ in {
   config = {
     valhalla = {
       fileSystems = {
-        script = config.valhalla.fileSystems.diskSetup.script;
+        script =
+          let
+            inherit (lib.strings) normalizePath removeSuffix;
+            devices = (builtins.attrValues cfg.diskSetup.devices);
+            mountScript = lib.strings.concatLines (
+              (builtins.concatMap
+                (
+                  _: [
+                    "partprobe 2> /dev/null || true"
+                    "udevadm trigger"
+                    (builtins.concatStringsSep " " (
+                      [ "sudo" "mount" "--mkdir" ] ++
+                      (lib.optionals (_.fsType == "ntfs") [ "-t" "ntfs3" ]) ++
+                      [
+                        (builtins.concatStringsSep " " (builtins.map (_: "-o ${_}") _.options))
+                        (_.device)
+                        (removeSuffix "/" (normalizePath "/${cfg.rootDir}/${_.mountPoint}"))
+                      ]
+                    ))
+                  ]
+                )
+                (builtins.attrValues cfg.mounts))
+            );
+          in
+          ''
+            #!/bin/bash
+            set -o errexit
+            ${cfg.diskSetup.scripts.init}
+            ${lib.strings.concatLines (lib.optionals ((builtins.length devices) > 0) [
+              ''echo "$(tput setaf 3)=== WARNING ====$(tput sgr0)"''
+              (''echo "Continuing this script will alter the partitions of ''
+                + (lib.strings.concatStringsSep ", " (builtins.map (_: "${_.deviceVariable}") (lib.lists.init devices)))
+                + (if (builtins.length devices) > 1 then " and " else "") + (lib.lists.last devices).deviceVariable + ''"'')
+              ''
+                if ! fish ${./fileSystems/confirm.fish} "Are you sure you want to continue?" "n"; then
+                  exit 1
+                fi
+              ''
+            ])}
+            ${cfg.diskSetup.scripts.partition}
+            ${cfg.btrfs.script}
+            ${mountScript}
+            ${cfg.diskSetup.scripts.swap}
+          '';
       };
     };
   };

lib/modules/fileSystems/btrfs.nix

@@ -0,0 +1,108 @@
+{ lib, config, ... }:
+let
+  inherit (lib) types mkOption;
+  cfg = config.valhalla.fileSystems.btrfs;
+
+  profileType = types.enum [
+    "raid0"
+    "raid1"
+    "raid1c3"
+    "raid1c4"
+    "raid5"
+    "raid6"
+    "raid10"
+    "dup"
+    "single"
+  ];
+
+  volumeType = types.submodule (
+    { config, name, ... }: {
+      options = {
+        mountPoint = mkOption {
+          type = types.nullOr types.str;
+          description = "The path to mount the volume to.";
+          default = null;
+        };
+
+        devices = mkOption {
+          type = types.listOf types.str;
+          description = "The devices of the btrfs volume.";
+        };
+
+        label = mkOption {
+          type = types.nullOr types.str;
+          description = "The label of the volume.";
+          default = name;
+        };
+
+        dataProfile = mkOption {
+          type = types.nullOr profileType;
+          description = "The data profile.";
+          default = null;
+        };
+
+        metadataProfile = mkOption {
+          type = types.nullOr profileType;
+          description = "The metadata profile.";
+          default = null;
+        };
+      };
+    }
+  );
+in
+{
+  options = {
+    valhalla = {
+      fileSystems.btrfs = {
+        volumes = mkOption {
+          type = types.attrsOf volumeType;
+          description = "The btrfs volumes of the system.";
+          default = { };
+        };
+
+        script = mkOption {
+          type = types.str;
+          description = "The script for creating the btrfs volumes.";
+          default = lib.strings.concatLines (
+            builtins.map
+              (
+                _: builtins.concatStringsSep " " (
+                  [ "mkfs.btrfs" ] ++
+                  (lib.optionals (_.metadataProfile != null) [ "--metadata" "${_.metadataProfile}" ]) ++
+                  (lib.optionals (_.dataProfile != null) [ "--data" "${_.dataProfile}" ]) ++
+                  (lib.optionals (_.label != null) [ "--label" "${_.label}" ]) ++
+                  _.devices
+                )
+              )
+              (builtins.attrValues cfg.volumes)
+          );
+        };
+      };
+    };
+  };
+
+  config = {
+    valhalla = {
+      linux.programs.btrfs = lib.optionalAttrs
+        (builtins.any
+          (_: (builtins.length _.devices) > 1)
+          (builtins.attrValues cfg.volumes))
+        {
+          enable = true;
+          pools = true;
+        };
+
+      fileSystems.mounts = lib.attrsets.concatMapAttrs
+        (
+          name: volume:
+            if (volume.mountPoint != null) then {
+              ${volume.mountPoint} = {
+                device = builtins.elemAt volume.devices 0;
+                fsType = "btrfs";
+              };
+            } else { }
+        )
+        cfg.volumes;
+    };
+  };
+}

lib/modules/fileSystems/choose-device.fish

@@ -22,7 +22,7 @@ function chooseDisk -a outFile message selectScript
             end
         end
 
-        select "$header" "$outFile" "$message" "No valid disk found!" "$(string collect $disks)" false
+        select "$header" "$outFile" "$message" "No valid device found!" "$(string collect $disks)" false
         and begin
             set -l disk (string split -n " " (cat "$outFile"))
             echo "/dev/$disk[1]" >$outFile

lib/modules/fileSystems/disks.nix

@@ -4,7 +4,8 @@ let
 
   fs = import ./fs.nix;
 
-  diskListVarName = "myDisks";
+  cfg = config.valhalla.fileSystems;
+  deviceListVarName = "myDevices";
   isSwap = partition: builtins.elem partition.type [ fs.swap 19 ];
 
   probeScript = builtins.concatStringsSep "\n" [
@@ -12,35 +13,35 @@ let
     "udevadm trigger"
   ];
 
-  mkDiskType = types.submodule (
+  mkDeviceType = types.submodule (
     { config, name, ... }: {
       options = {
         id = mkOption {
           type = types.str;
-          description = "The internal identifier of the disk.";
+          description = "The internal identifier of the device.";
           internal = true;
         };
 
         wipe = mkOption {
           type = types.bool;
-          description = "A value indicating whether the disk should be wiped.";
+          description = "A value indicating whether the device should be wiped.";
           default = !(lib.lists.any (_: _.keepExisting) (builtins.attrValues config.partitions));
         };
 
-        deviceName = mkOption {
+        name = mkOption {
           type = types.nullOr types.str;
           description = "The name of the device.";
           default = name;
         };
 
-        devicePath = mkOption {
+        path = mkOption {
           type = types.nullOr types.str;
           description = "The path to the device.";
           default =
-            if config.deviceName == null then
+            if config.name == null then
               null
             else
-              "/dev/${config.deviceName}";
+              "/dev/${config.name}";
         };
 
         deviceScript = mkOption {
@@ -61,21 +62,28 @@ let
           default = { };
         };
 
-        script = mkOption {
+        scripts = {
+          init = mkOption {
             type = types.str;
-          description = "The script for formatting the disk.";
+            description = "A script for loading the device path into the device variable";
+          };
+
+          partition = mkOption {
+            type = types.str;
+            description = "A script for partitioning and formatting the device.";
+          };
         };
       };
 
       config =
         let
-          diskVarName = "${diskListVarName}[${config.id}]";
-          diskVar = "\${${diskVarName}}";
+          deviceVarName = "${deviceListVarName}[${config.id}]";
+          deviceVar = "\${${deviceVarName}}";
 
-          diskSelector = ''
+          deviceSelector = ''
             result="$(mktemp)"
-            fish ${./choose-disk.fish} "$result" "Please specify the \"${name}\" disk:" ${./select.fish}
-            ${diskVarName}="$(cat "$result")"
+            fish ${./choose-device.fish} "$result" "Please select the \"${name}\" device:" ${./select.fish}
+            ${deviceVarName}="$(cat "$result")"
           '';
 
           partitions = lib.lists.sortOn (_: _.index)
@@ -95,13 +103,12 @@ let
             "echo ${script} | ${
             fdiskCommand "${builtins.concatStringsSep " " args} ${
               if append then "--append" else ""
-            } ${diskVar}"
+            } ${deviceVar}"
           }";
-          wipeScript = script: fdiskScript script [ ] false;
           appendScript = index: script: fdiskScript script [ "-N" (builtins.toString index) ] true;
 
           cleanup = lib.strings.concatLines (builtins.map
-            (partition: "${fdiskCommand "--delete ${diskVar} ${toString partition.index}"} || true")
+            (partition: "${fdiskCommand "--delete ${deviceVar} ${toString partition.index}"} || true")
             (lib.lists.sortOn
               (partition: partition.index * -1)
               (builtins.filter (_: !_.keepExisting) partitions)));
@@ -109,7 +116,7 @@ let
           fdiskCommands = lib.strings.concatLines
             (lib.optionals config.wipe [
               cleanup
-              (wipeScript "label: gpt")
+              (fdiskScript "label: gpt" [ ] false)
             ] ++ (builtins.concatMap
               (
                 partition:
@@ -125,6 +132,7 @@ let
 
                   formatScripts = {
                     ${fs.ext4} = "mkfs.ext4 -F ${partVar}";
+                    ${fs.btrfs} = "mkfs.btrfs ${partVar}";
                     ${fs.swap} = "mkswap ${partVar}";
                     ${fs.ntfs} = "mkfs.ntfs -F ${partVar}";
                     ${fs.fat32} = "mkfs.fat -F 32 ${partVar}";
@@ -132,16 +140,18 @@ let
 
                   labelScripts = {
                     ${fs.ext4} = label: "e2label ${partVar} ${label}";
+                    ${fs.btrfs} = label: "btrfs filesystem label ${partVar} ${label}";
                     ${fs.swap} = label: "swaplabel ${partVar} --label ${label}";
                     ${fs.ntfs} = label: "ntfslabel ${partVar} ${label}";
                     ${fs.fat32} = label: "fatlabel ${partVar} ${label}";
                   };
 
-                  create = lib.strings.concatLines [
+                  create = lib.strings.concatLines ([
                     (appendScript index ''${toString index}: "$(${sizeOption})" type=${mkType type}'')
                     probeScript
+                  ] ++ (lib.optionals (format != null) [
                     "sudo ${formatScripts.${format}}"
-                  ];
+                  ]));
 
                   fallback = ''
                     if ! { ls "${partVar}" 2>&1; } > /dev/null
@@ -151,11 +161,12 @@ let
                   '';
                 in
                 [
-                  ''local diskPath="$(find -L /dev/disk/by-diskseq -samefile ${diskVar})"''
+                  ''local diskPath="$(find -L /dev/disk/by-diskseq -samefile ${deviceVar})"''
                   ''local ${partVarName}="$diskPath-part${toString index}"''
                   (if keepExisting then fallback else create)
+                ] ++ (lib.optionals (format != null) [
                   "sudo ${labelScripts.${format} label}"
-                ]
+                ])
               )
               partitions));
 
@@ -164,24 +175,25 @@ let
               partition:
               lib.optional
                 (partition.keepExisting && !(builtins.isNull partition.type))
-                ''sudo sfdisk --part-type ${diskVar} ${toString partition.index} ${mkType partition.type}''
+                ''sudo sfdisk --part-type ${deviceVar} ${toString partition.index} ${mkType partition.type}''
             )
             partitions);
         in
         {
           id = "disk-${name}";
-          deviceVariable = diskVar;
+          deviceVariable = deviceVar;
 
-          deviceScript =
-            if config.devicePath == null then ''
-              ${diskSelector}
+          scripts = {
+            init =
+              if config.path == null then ''
+                ${deviceSelector}
               '' else ''
-              ${diskVarName}=${config.devicePath}
-              if [ ! -b ${diskVar} ]; then
+                ${deviceVarName}=${config.path}
+                if [ ! -b ${deviceVar} ]; then
                   function fallback() {
-                  echo "Couldn't find the specified disk \"${diskVar}\"."
+                    echo "Couldn't find the specified disk \"${deviceVar}\"."
                     if fish ${./confirm.fish} "Do you want to choose a different \"${name}\" disk?"; then
-                    ${diskSelector}
+                      ${deviceSelector}
                     else
                       exit 1
                     fi
@@ -191,7 +203,7 @@ let
                 fi
               '';
 
-          script = lib.mkDefault ''
+            partition = lib.mkDefault ''
               function partition() {
                 ${if (!config.wipe) then cleanup else ""}
                 ${probeScript}
@@ -202,6 +214,7 @@ let
               partition
             '';
           };
+        };
     }
   );
 
@@ -232,13 +245,13 @@ let
         };
 
         format = mkOption {
-          type = types.enum (builtins.attrValues fs);
+          type = types.nullOr (types.enum (builtins.attrValues fs));
           description = "The file system format of the partition.";
           default =
             if (isSwap config) then
               fs.swap
             else
-              throw ("Partition format not specified.");
+              null;
         };
 
         size = mkOption {
@@ -285,16 +298,10 @@ in
   options = {
     valhalla = {
       fileSystems = {
-        rootDir = mkOption {
-          type = types.str;
-          description = "The root of the installation directory to mount disks into.";
-          default = "/mnt";
-        };
-
         diskSetup = {
-          disks = mkOption {
-            type = types.attrsOf (mkDiskType);
-            description = "The additional disks to format.";
+          devices = mkOption {
+            type = types.attrsOf (mkDeviceType);
+            description = "The disk devices to format.";
             default = { };
           };
 
@@ -309,40 +316,11 @@ in
               description = "The script for partitioning the disks.";
             };
 
-            mount = mkOption {
+            swap = mkOption {
               type = types.str;
-              description = "The script for mounting the partitioned disks.";
+              description = "The script for enabling swap devices.";
             };
           };
-
-          script = mkOption {
-            type = types.str;
-            description = "The script for partitioning the system's disks.";
-            default =
-              let
-                cfg = config.valhalla.fileSystems.diskSetup;
-                inherit (cfg) scripts;
-                disks = (builtins.attrValues cfg.disks);
-              in
-              ''
-                #!/bin/bash
-                set -o errexit
-                ${scripts.init}
-                ${lib.strings.concatLines (lib.optionals ((builtins.length disks) > 0) [
-                  ''echo "$(tput setaf 3)==== WARNING ====$(tput sgr0)"''
-                  (''echo "Continuing this script will alter the partitions of ''
-                    + (lib.strings.concatStringsSep ", " (builtins.map (_: "${_.deviceVariable}") (lib.lists.init disks)))
-                    + (if (builtins.length disks) > 1 then " and " else "") + (lib.lists.last disks).deviceVariable + ''"'')
-                  ''
-                    if ! fish ${./confirm.fish} "Are you sure you want to continue?" "n"; then
-                      exit 1
-                    fi
-                  ''
-                ])}
-                ${scripts.partition}
-                ${scripts.mount}
-              '';
-          };
         };
       };
     };
@@ -350,38 +328,36 @@ in
 
   config = {
     valhalla = {
-      fileSystems.diskSetup = {
+      fileSystems = {
+        mounts = (lib.attrsets.concatMapAttrs
+          (
+            name: device:
+              lib.attrsets.concatMapAttrs
+                (
+                  name: partition:
+                    if partition.mountPoint != null then {
+                      ${partition.mountPoint} = {
+                        device = "/dev/disk/by-label/${partition.label}";
+                        fsType = partition.format;
+                        options = partition.mountOptions;
+                      };
+                    } else { }
+                )
+                device.partitions
+          )
+          cfg.diskSetup.devices);
+
+        diskSetup = {
           scripts =
             let
-            cfg = config.valhalla.fileSystems;
-            inherit (cfg) rootDir;
-            inherit (lib.strings) normalizePath;
               partPath = part: "/dev/disk/by-label/${part.label}";
-            disks = ((builtins.attrValues cfg.diskSetup.disks));
+              disks = ((builtins.attrValues cfg.diskSetup.devices));
               partitions = (builtins.concatMap (_: (builtins.attrValues _.partitions)) disks);
             in
             {
-            init = lib.strings.concatLines (builtins.map (_: _.deviceScript) disks);
-            partition = lib.strings.concatLines (builtins.map (_: _.script) disks);
-            mount = lib.strings.concatLines (
-              (builtins.concatMap
-                (
-                  _: [
-                    probeScript
-                    (builtins.concatStringsSep " " (
-                      [ "sudo" "mount" "--mkdir" ] ++
-                        (lib.optionals (_.format == "ntfs") [ "-t" "ntfs3" ]) ++
-                        [
-                          (builtins.concatStringsSep " " (builtins.map (_: "-o ${_}") _.mountOptions))
-                          (partPath _)
-                          (normalizePath "/${rootDir}/${_.mountPoint}")
-                        ]
-                    ))
-                  ]
-                )
-                (lib.lists.sortOn
-                  (_: normalizePath "/${_.mountPoint}")
-                  (builtins.filter (_: _.mountPoint != null) partitions))) ++
+              init = lib.strings.concatLines (builtins.map (_: _.scripts.init) disks);
+              partition = lib.strings.concatLines (builtins.map (_: _.scripts.partition) disks);
+              swap = lib.strings.concatLines (
                 (builtins.map
                   (
                     _: ''
@@ -389,7 +365,9 @@ in
                       sudo swapon ${partPath _}
                     ''
                   )
-              (builtins.filter (_: _.useSwap) partitions)));
+                  (builtins.filter (_: _.useSwap) partitions))
+              );
+            };
         };
       };
     };

lib/modules/fileSystems/fs.nix

@@ -1,5 +1,6 @@
 {
   ext4 = "ext4";
+  btrfs = "btrfs";
   swap = "swap";
   ntfs = "ntfs";
   fat32 = "fat32";

lib/modules/partition.nix

@@ -1,5 +0,0 @@
-{ ... }: {
-  imports = [
-    ./partition/disks.nix
-  ];
-}

lib/modules/programs.nix

@@ -91,6 +91,7 @@ let
 in
 {
   imports = [
+    ./programs/btrfs.nix
     ./programs/docker.nix
     ./programs/git.nix
     ./programs/nextcloud.nix

lib/modules/programs/btrfs.nix

@@ -0,0 +1,14 @@
+{ lib, ... }:
+let
+  inherit (lib) mkEnableOption;
+in
+{
+  options = {
+    valhalla = {
+      linux.programs.btrfs = {
+        enable = mkEnableOption "btrfs tools";
+        pools = mkEnableOption "btrfs pool support in bootloaders";
+      };
+    };
+  };
+}

lib/modules/valhalla.nix

@@ -6,7 +6,6 @@ in {
     ./hardware.nix
     ./i18n.nix
     ./os.nix
-    ./partition.nix
     ./programs.nix
     ./software.nix
     ./users.nix

profiles/machines/manuel/DerGeret/config.nix

@@ -25,7 +25,7 @@
         };
       };
 
-      fileSystems.diskSetup.disks.OS.partitions = {
+      fileSystems.diskSetup.devices.OS.partitions = {
         # Keep Windows' boot partition
         Boot.keepExisting = true;
 

profiles/machines/manuel/Generic/config.nix

@@ -1,11 +1,11 @@
 { lib, config, ... }:
-let fs = import ../../../../lib/modules/partition/fs.nix;
+let fs = import ../../../../lib/modules/fileSystems/fs.nix;
 in {
   imports = [ ../defaults.nix ];
 
   config = {
     valhalla = {
-      fileSystems.diskSetup.disks = {
+      fileSystems.diskSetup.devices = {
         OS = {
           partitions = {
             Boot = {

profiles/machines/manuel/server.nix

@@ -1,12 +1,15 @@
 { lib, config, ... }:
-let fs = import ../../../lib/modules/partition/fs.nix;
+let fs = import ../../../lib/modules/fileSystems/fs.nix;
 in {
   imports = [ ../../users/manuel/config.nix ];
 
   config = {
     valhalla = {
-      fileSystems.diskSetup.disks = {
+      fileSystems = {
+        diskSetup.devices = {
           OS = {
+            path = "/dev/sda";
+
             partitions = {
               Boot = {
                 index = 1;
@@ -25,8 +28,16 @@ in {
                 index = 3;
                 label = lib.mkDefault config.valhalla.boot.label;
                 type = "linux";
-              format = fs.ext4;
+              };
+            };
+          };
+        };
+
+        btrfs = {
+          volumes = {
+            OS = {
               mountPoint = "/";
+              devices = [ "/dev/sda3" "/dev/sdb" ];
             };
           };
         };

scripts/Arch/OS/setup.fish

@@ -91,6 +91,7 @@ begin
 
             and echo (getOSConfig hostname) | arch-chroot "$mountDir" tee /etc/hostname >/dev/null
 
+            and runInOS fish "$tempDir/../Software/btrfs/main.fish"
             and arch-chroot "$mountDir" mkinitcpio -P
             and runInOS fish "$tempDir/../Software/grub/main.fish"
 

scripts/Arch/Software/btrfs/main.fish

@@ -0,0 +1,19 @@
+#!/bin/env fish
+begin
+    set -l dir (status dirname)
+    source "$dir/../../lib/software.fish"
+
+    function installSW
+        pacinst btrfs-progs
+    end
+
+    function configureSW -V dir
+        source "$dir/../../../lib/settings.fish"
+
+        if isOSEnabled "programs.btrfs.pools"
+            echo "HOOKS+=(btrfs)" | sudo tee /etc/mkinitcpio.conf.d/btrfs.conf >/dev/null
+        end
+    end
+
+    runInstaller $argv
+end

scripts/Arch/lib/deploy.fish

@@ -71,6 +71,7 @@ function deploySoftware -d "Deploys a the specified software action" -a action
     end
 
     and source "$dir/../../Common/Software/bash/main.fish" $argv
+    and source "$dir/../Software/btrfs/main.fish" $argv
     and source "$dir/../../Common/Software/nuke-usb/main.fish" $argv
     and source "$dir/../Software/sudo/main.fish" $argv
     and source "$dir/../Software/aliae/main.fish" $argv

scripts/lib/restoration.fish

@@ -7,7 +7,7 @@ function initBackupConfig -V dir -d "Fetches the configuration by prompting the
         if [ -z "$VALHALLA_BACKUP_DIR" ]
             argparse -i "action=" -- $argv
             set -l index
-            set -l confirm fish "$dir/../../lib/modules/partition/confirm.fish"
+            set -l confirm fish "$dir/../../lib/modules/fileSystems/confirm.fish"
 
             switch "$_flag_action"
                 case backup

scripts/lib/settings.fish

@@ -4,7 +4,7 @@ function isConfigured -S
 end
 
 function selectProfile -S -a result
-    source "$(status dirname)/../../lib/modules/partition/select.fish"
+    source "$(status dirname)/../../lib/modules/fileSystems/select.fish"
     set -l file (mktemp)
     set -l header NAME
     set -l profiles

winiso/lib/choose-disk.fish

@@ -1,6 +1,6 @@
 #!/bin/env fish
 function chooseDisk -a result message
     set -l file (mktemp)
-    fish "$(status dirname)/../../lib/modules/partition/choose-disk.fish" "$file" "$message"
+    fish "$(status dirname)/../../lib/modules/fileSystems/choose-disk.fish" "$file" "$message"
     set -g "$result" (cat "$file")
 end

winiso/lib/confirm.fish

@@ -1,4 +1,4 @@
 #!/bin/env fish
 function confirm -a message default
-    fish "$(status dirname)/../../lib/modules/partition/confirm.fish" $argv
+    fish "$(status dirname)/../../lib/modules/fileSystems/confirm.fish" $argv
 end