diff --git a/composer.json b/composer.json
index 22a6e5a5..b280d242 100755
--- a/composer.json
+++ b/composer.json
@@ -42,13 +42,10 @@
     "dev:fix": "php -dxdebug.mode=off ./vendor/bin/php-cs-fixer fix .",
     "dev:precommit": "pre-commit install && pre-commit autoupdate",
     "dev:tips": "[ ! -f catpaw.phar ] && echo '' || php catpaw.phar --tips",
-    "download:psalm": "[ ! -f psalm.phar ] && wget https://github.com/vimeo/psalm/releases/latest/download/psalm.phar || echo ''",
     "post-autoload-dump": [
-      "@download:psalm",
       "@dev:tips"
     ],
     "post-create-project-cmd": [
-      "@download:psalm",
       "@dev:tips"
     ]
   },
diff --git a/dev-gui-example.sh b/dev-gui-example.sh
index 769ad53a..bed92067 100755
--- a/dev-gui-example.sh
+++ b/dev-gui-example.sh
@@ -1,8 +1,8 @@
 #!/bin/bash
 
-pushd src/lib/Gui/lib &&\
-go build -o main.so -buildmode=c-shared main.go &&\
-cpp -P ./main.h ./main.static.h &&\
-popd || exit
+# pushd src/lib/Gui/lib &&\
+# go build -o main.so -buildmode=c-shared main.go &&\
+# cpp -P ./main.h ./main.static.h &&\
+# popd || exit
 
 php -dxdebug.mode=debug -dxdebug.start_with_request=yes -dphar.readonly=0 ./bin/start --libraries='./src/lib' --entry='./src/gui-example.php'
diff --git a/psalm.xml b/psalm.xml
deleted file mode 100644
index 76c896c2..00000000
--- a/psalm.xml
+++ /dev/null
@@ -1,17 +0,0 @@
-<?xml version="1.0"?>
-<psalm
-        errorLevel="7"
-        phpVersion="8.1"
-        resolveFromConfigFile="true"
-        ensureArrayStringOffsetsExist="true"
-        ensureArrayIntOffsetsExist="true"
-        checkForThrowsInGlobalScope="true"
-        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-        xmlns="https://getpsalm.org/schema/config"
-        xsi:schemaLocation="https://getpsalm.org/schema/config"
->
-    <projectFiles>
-        <directory name="src" />
-        <directory name="vendor" />
-    </projectFiles>
-</psalm>
diff --git a/src/gui-example.php b/src/gui-example.php
index c2051564..dba1a32d 100644
--- a/src/gui-example.php
+++ b/src/gui-example.php
@@ -1,5 +1,6 @@
 <?php
 use function CatPaw\Core\error;
+
 use function CatPaw\Core\goffi;
 use CatPaw\Gui\Contract;
 
diff --git a/src/lib/Core/FileName.php b/src/lib/Core/FileName.php
new file mode 100644
index 00000000..f8d5d9c3
--- /dev/null
+++ b/src/lib/Core/FileName.php
@@ -0,0 +1,70 @@
+<?php
+
+namespace CatPaw\Core;
+
+use Phar;
+use Stringable;
+
+class FileName implements Stringable {
+    /**
+     * Create a file name starting from a `$base` directory.
+     * @param  array<string> $base
+     * @return FileName
+     */
+    public static function create(array $path):self {
+        return new self($path);
+    }
+
+    private bool $checkPhar = false;
+
+    /**
+     * @param array<string> $path
+     */
+    private function __construct(private array $path) {
+    }
+
+    /**
+     * Given a `$path`, create a file name.
+     * @param  array<string> $path
+     * @return string
+     */
+    private static function asFileName(array $path):string {
+        $parts = [];
+        $count = count($path);
+        for ($index = 0; $index < $count; $index++) {
+            $pathName = $path[$index];
+            if ($index < $count - 1 && !str_ends_with($pathName, '/')) {
+                $pathName = "$pathName/";
+            }
+            $parts[] = $pathName;
+        }
+        return join($parts)?:'';
+    }
+
+    /**
+     * Lookup the file in in the `.phar` before falling back to the file system.
+     * @return self
+     */
+    public function withPhar(): self {
+        $this->checkPhar = true;
+        return $this;
+    }
+
+    public function __toString(): string {
+        if (isPhar()) {
+            $phar              = Phar::running();
+            $localizedFileName = str_replace("$phar/", '', self::asFileName($this->path));
+
+            if ($this->checkPhar) {
+                $pharFileName = "$phar/$localizedFileName";
+                if (!file_exists($pharFileName)) {
+                    return realpath($localizedFileName);
+                }
+                return $pharFileName;
+            }
+            return realpath($localizedFileName);
+        } else {
+            return realpath(self::asFileName($this->path));
+        }
+    }
+}
diff --git a/src/scripts/Core/functions.php b/src/scripts/Core/functions.php
index 16ff9eab..4b1f4715 100755
--- a/src/scripts/Core/functions.php
+++ b/src/scripts/Core/functions.php
@@ -349,20 +349,11 @@ function stop(string|Error $error) {
 
 /**
  * Given a `$path`, create a file name.
- * @param  string ...$path
- * @return string
+ * @param  string   ...$path
+ * @return FileName
  */
-function asFileName(string ...$path):string {
-    $parts = [];
-    $count = count($path);
-    for ($index = 0; $index < $count; $index++) {
-        $pathName = $path[$index];
-        if ($index < $count - 1 && !str_ends_with($pathName, '/')) {
-            $pathName = "$pathName/";
-        }
-        $parts[] = $pathName;
-    }
-    return realpath(join($parts))?:'';
+function asFileName(string ...$path):FileName {
+    return FileName::create($path);
 }
 
 /**
@@ -372,7 +363,8 @@ function asFileName(string ...$path):string {
  */
 function asPharFileName(string ...$path):string {
     if (isPhar()) {
-        $phar  = Phar::running();
+        $phar = Phar::running();
+
         $path  = [$phar, ...$path];
         $parts = [];
         $count = count($path);