diff --git a/scripts/Common/Scripts/Config.ps1 b/scripts/Common/Scripts/Config.ps1
index 90e82ae9..4396aa50 100644
--- a/scripts/Common/Scripts/Config.ps1
+++ b/scripts/Common/Scripts/Config.ps1
@@ -4,6 +4,7 @@ using namespace System.Management.Automation.Host;
 $null = New-Module {
     . "$PSScriptRoot/SoftwareManagement.ps1";
     . "$PSScriptRoot/../../Windows/Scripts/Registry.ps1";
+    . "$PSScriptRoot/../../Windows/Scripts/WSL.ps1";
     . "$PSScriptRoot/../../Windows/Types/WindowsInstallerAction.ps1";
 
     <#
@@ -67,7 +68,6 @@ $null = New-Module {
             [string] $Script
         )
 
-        . "$PSScriptRoot/../../Windows/Scripts/WSL.ps1";
         $scriptPath = "$PSScriptRoot/../../Common/Scripts/config.fish";
 
         if ($env:CONFIG_NAME -or ($Script -eq "getProfiles")) {
@@ -80,10 +80,6 @@ $null = New-Module {
                     $projectRoot = "$PSScriptRoot/../../..";
                     $archisoDir = "$projectRoot/archiso";
 
-                    function fish {
-                        wsl --shell-type login -- nix --extra-experimental-features "nix-command flakes" run nixpkgs`#fish -- $args
-                    }
-
                     if (Test-Path -PathType Container "$archisoDir") {
                         $git = {
                             git -C "$projectRoot" -c safe.directory="$("$(Resolve-Path $projectRoot)".Replace("\", "/"))" @args;
@@ -93,7 +89,7 @@ $null = New-Module {
                         $cleanup = { & $git restore --staged "$archisoDir" };
                     }
 
-                    $output = fish -c ". $(ConvertTo-LinuxPath $scriptPath); $Script";
+                    $output = Invoke-Fish -c ". $(ConvertTo-LinuxPath $scriptPath); $Script";
 
                     if (-not $?) {
                         Write-Error "The configuration could not be retrieved!";
diff --git a/scripts/Common/Scripts/Operations.ps1 b/scripts/Common/Scripts/Operations.ps1
index 0e2e5efe..24fd1e73 100644
--- a/scripts/Common/Scripts/Operations.ps1
+++ b/scripts/Common/Scripts/Operations.ps1
@@ -243,9 +243,8 @@ $null = New-Module {
                             continue;
                         }
 
-                        if (-not (wsl --shell-type login type -t nix)) {
-                            wsl -- sh `<`(curl -L https://nixos.org/nix/install`) --daemon --yes;
-                            wsl --shutdown;
+                        if (-not (Test-Nix)) {
+                            Install-Nix;
                             continue;
                         }
 
diff --git a/scripts/Windows/Scripts/WSL.ps1 b/scripts/Windows/Scripts/WSL.ps1
index bbce2654..385fada8 100644
--- a/scripts/Windows/Scripts/WSL.ps1
+++ b/scripts/Windows/Scripts/WSL.ps1
@@ -126,6 +126,39 @@ function Unregister-WslDistribution {
     Move-Item $tempDisk $wslDisk;
 }
 
+<#
+    .SYNOPSIS
+    Checks whether `nix` is installed in WSL.
+#>
+function Test-Nix {
+    wsl --shell-type login type -t nix;
+}
+
+<#
+    .SYNOPSIS
+    Installs `nix` in WSL.
+#>
+function Install-Nix {
+    wsl -- sh `<`(curl -L https://nixos.org/nix/install`) --daemon --yes;
+    wsl --shutdown;
+}
+
+<#
+    .SYNOPSIS
+    Execute a `nix` command in WSL.
+#>
+function Invoke-Nix {
+    wsl --shell-type login nix --extra-experimental-features "nix-command flakes" @args;
+}
+
+<#
+    .SYNOPSIS
+    Execute a `fish` command in WSL.
+#>
+function Invoke-Fish {
+    Invoke-Nix run nixpkgs`#fish `-- @args;
+}
+
 <#
     .SYNOPSIS
     Converts the specified path to linux and escapes it for the use in a script.