diff --git a/7zip/_.package.json b/7zip/_.package.json
index e5a62e8..7b33a9e 100644
--- a/7zip/_.package.json
+++ b/7zip/_.package.json
@@ -2,11 +2,7 @@
   "package": {
     "Condition": [
       {
-        "custom": "Get-Command 7z | Where-Object CommandType -eq 'Application'",
-        "System": null,
-        "Hostname": null,
-        "Username": null,
-        "Logic": 0
+        "AppExeExists": "7z"
       }
     ],
     "Name": "7zip"
diff --git a/ansible/_.package.json b/ansible/_.package.json
index 08b8b1a..9506815 100644
--- a/ansible/_.package.json
+++ b/ansible/_.package.json
@@ -2,11 +2,7 @@
   "package": {
     "Condition": [
       {
-        "custom": "Get-Command ansible -Type Application",
-        "System": null,
-        "Hostname": null,
-        "Username": null,
-        "Logic": 0
+        "AppExeExists": "ansible"
       }
     ],
     "Name": "ansible"
diff --git a/base.win/_.package.json b/base.win/_.package.json
index b1f2cf8..cc175ac 100644
--- a/base.win/_.package.json
+++ b/base.win/_.package.json
@@ -3,13 +3,9 @@
     "Name": "base.win",
     "Condition": [
       {
-        "custom": null,
         "System": [
           "Desktop"
-        ],
-        "Hostname": null,
-        "Username": null,
-        "Logic": 0
+        ]
       }
     ]
   }
diff --git a/base/Add-PackageCondition.ps1 b/base/Add-PackageCondition.ps1
index 34a57b0..848d6b3 100644
--- a/base/Add-PackageCondition.ps1
+++ b/base/Add-PackageCondition.ps1
@@ -5,7 +5,9 @@
     [ScriptBlock]$CustomCondition,
     [string[]]$System = $null,
     [string[]]$Hostname = $null,
-    [string[]]$Username = $null
+    [string[]]$Username = $null,
+    [string[]]$CmdletExists = $null,
+    [string[]]$AppExeExists = $null
 )
 
 process {
@@ -13,7 +15,9 @@ process {
     $newCond.custom = $CustomCondition
     $newCond.System = $System
     $newCond.Hostname = $Hostname
-    $newCond.Username = $null
+    $newCond.Username = $Username
+    $newCond.CmdletExists = $CmdletExists
+    $newCond.AppExeExists = $AppExeExists
     $newCond.Logic = [szLogic]::and
     $InputObject.Condition += $newCond
     
diff --git a/base/src/Packagesz.class.inc.ps1 b/base/src/Packagesz.class.inc.ps1
index b50da69..26a9f3e 100644
--- a/base/src/Packagesz.class.inc.ps1
+++ b/base/src/Packagesz.class.inc.ps1
@@ -23,6 +23,7 @@ class Packagesz { #: System.Management.Automation.IValidateSetValuesGenerator {
         $local:valid = $Package.Condition[0].Logic -notin ([szLogic]::or, [szLogic]::ornot)
         $local:currentSys = [SystemName]::_GetValidValues('',$true,$true);
         $local:hostname = $(hostname)
+        $local:allCmdlets = Get-Command | Select-Object -ExpandProperty Name
         
         $local:username = $( if( $env:USER ) { $env:USER } else { $env:USERNAME } )
         
@@ -39,6 +40,14 @@ class Packagesz { #: System.Management.Automation.IValidateSetValuesGenerator {
             if( $v -and $c.Username ) {
                 $v = $v -and $($c.Username | Where-Object { $username -match $_ })
             }
+            if( $v -and $c.CmdletExists ) {
+                $v = $v -and -not $($c.CmdletExists | Where-Object { $allCmdlets -notcontains $_ })
+            }
+            if( $v -and $c.AppExeExists ) {
+                $v = $v -and -not $($c.AppExeExists | Where-Object {
+                        -not ( Get-Command $_ -Type Application -ErrorAction SilentlyContinue )
+                    })
+            }
             if( $v -and $c.custom ) {
                 $v = $v -and ([bool]$(& ([ScriptBlock]::Create($c.custom))))
             }
diff --git a/docker/_.package.json b/docker/_.package.json
index d790eb8..ef463e3 100644
--- a/docker/_.package.json
+++ b/docker/_.package.json
@@ -2,11 +2,7 @@
   "package": {
     "Condition": [
       {
-        "custom": "Get-Command docker -Type Application",
-        "System": null,
-        "Hostname": null,
-        "Username": null,
-        "Logic": 0
+        "AppExeExists": "docker"
       }
     ],
     "Name": "docker"
diff --git a/git/_.package.json b/git/_.package.json
index fa2c07c..f1e1bb6 100644
--- a/git/_.package.json
+++ b/git/_.package.json
@@ -2,11 +2,7 @@
   "package": {
     "Condition": [
       {
-        "custom": "Get-Command git -Type Application",
-        "System": null,
-        "Hostname": null,
-        "Username": null,
-        "Logic": 0
+        "AppExeExists": "git"
       }
     ],
     "Name": "git"
diff --git a/scoop/_.package.json b/scoop/_.package.json
index 8c4ee64..8390926 100644
Binary files a/scoop/_.package.json and b/scoop/_.package.json differ