diff --git a/README.md b/README.md
index 7ad55a87..2a4682af 100644
--- a/README.md
+++ b/README.md
@@ -1,10 +1,10 @@
 # polyglot
 
-<https://polyglot.on.fleek.co>
+<https://i574n.github.io/polyglot>
 
 <https://polyglot.pages.dev>
 
-<https://i574n.github.io/polyglot>
+<https://polyglot.on.fleek.co>
 
 [![깃허브 코드스페이스](https://github.com/codespaces/badge.svg)](https://github.com/codespaces/new?hide_repo_select=true&ref=main&repo=255818909)
 
diff --git a/lib/spiral/file_system.dib.html b/lib/spiral/file_system.dib.html
index fa1eb44f..1a30e825 100644
--- a/lib/spiral/file_system.dib.html
+++ b/lib/spiral/file_system.dib.html
@@ -9685,7 +9685,7 @@ <h3 id="create_temp_path">create_temp_path<a class="anchor-link" href="#create_t
 <div class="jp-OutputPrompt jp-OutputArea-prompt"></div>
 <div class="jp-RenderedText jp-OutputArea-output" data-mime-type="text/plain" tabindex="0">
 <pre>.rs output:
-assert_contains / actual: "C:\Users\i574n\AppData\Local\Temp\!create_temp_path_\spiral_builder_f2742df0f5e5eefcfba17c19b2ec6967bf389d948aee87a7bf4d904931c1a4ad\20240701-1319-1610-9315-0000006940a9" / expected: '\\'
+assert_contains / actual: "C:\Users\i574n\AppData\Local\Temp\!create_temp_path_\spiral_builder_f2742df0f5e5eefcfba17c19b2ec6967bf389d948aee87a7bf4d904931c1a4ad\20240701-1749-4289-9815-000000515c61" / expected: '\\'
 </pre>
 </div>
 </div>
@@ -9693,7 +9693,7 @@ <h3 id="create_temp_path">create_temp_path<a class="anchor-link" href="#create_t
 <div class="jp-OutputPrompt jp-OutputArea-prompt"></div>
 <div class="jp-RenderedText jp-OutputArea-output" data-mime-type="text/plain" tabindex="0">
 <pre>.fsx output:
-assert_contains / actual: "C:\Users\i574n\AppData\Local\Temp\!create_temp_path_\dotnet-repl\20240701-1319-1667-6768-600400b5b1fd" / expected: '\\'
+assert_contains / actual: "C:\Users\i574n\AppData\Local\Temp\!create_temp_path_\dotnet-repl\20240701-1749-4324-2401-20030008d1d6" / expected: '\\'
 </pre>
 </div>
 </div>
@@ -10440,84 +10440,12 @@ <h3 id="file_delete">file_delete<a class="anchor-link" href="#file_delete">¶</a
 </div>
 <div class="jp-InputArea jp-Cell-inputArea"><div class="jp-InputPrompt jp-InputArea-prompt">
 </div><div class="jp-RenderedHTMLCommon jp-RenderedMarkdown jp-MarkdownOutput" data-mime-type="text/markdown">
-<h2 id="rust">rust<a class="anchor-link" href="#rust">¶</a></h2>
-</div>
-</div>
-</div>
-</div>
-<div class="jp-Cell jp-MarkdownCell jp-Notebook-cell" id="cell-id=176">
-<div class="jp-Cell-inputWrapper" tabindex="0">
-<div class="jp-Collapser jp-InputCollapser jp-Cell-inputCollapser">
-</div>
-<div class="jp-InputArea jp-Cell-inputArea"><div class="jp-InputPrompt jp-InputArea-prompt">
-</div><div class="jp-RenderedHTMLCommon jp-RenderedMarkdown jp-MarkdownOutput" data-mime-type="text/markdown">
-<h3 id="file_exists_content">file_exists_content<a class="anchor-link" href="#file_exists_content">¶</a></h3>
-</div>
-</div>
-</div>
-</div><div class="jp-Cell jp-CodeCell jp-Notebook-cell jp-mod-noOutputs" id="cell-id=177">
-<div class="jp-Cell-inputWrapper" tabindex="0">
-<div class="jp-Collapser jp-InputCollapser jp-Cell-inputCollapser">
-</div>
-<div class="jp-InputArea jp-Cell-inputArea">
-<div class="jp-InputPrompt jp-InputArea-prompt">In [ ]:</div>
-<div class="jp-CodeMirrorEditor jp-Editor jp-InputArea-editor" data-type="inline">
-<div class="cm-editor cm-s-jupyter">
-<div class="highlight hl-ipython3"><pre><span></span><span class="n">let</span> <span class="n">file_exists_content</span> <span class="n">path</span> <span class="n">content</span> <span class="p">:</span> <span class="nb">bool</span> <span class="o">=</span>
-    <span class="n">run_target</span> <span class="n">function</span>
-        <span class="o">|</span> <span class="n">Rust</span> <span class="p">(</span><span class="n">Native</span><span class="p">)</span> <span class="o">=&gt;</span> <span class="n">fun</span> <span class="p">()</span> <span class="o">=&gt;</span>
-            <span class="k">if</span> <span class="n">path</span> <span class="o">|&gt;</span> <span class="n">file_exists</span> <span class="o">|&gt;</span> <span class="ow">not</span>
-            <span class="n">then</span> <span class="n">false</span>
-            <span class="k">else</span>
-                <span class="n">inl</span> <span class="n">existing_content</span> <span class="o">=</span> <span class="n">path</span> <span class="o">|&gt;</span> <span class="n">read_all_text</span>
-                <span class="n">content</span> <span class="o">=</span> <span class="n">existing_content</span>
-        <span class="o">|</span> <span class="n">_</span> <span class="o">=&gt;</span> <span class="n">fun</span> <span class="p">()</span> <span class="o">=&gt;</span> <span class="n">null</span> <span class="p">()</span>
-</pre></div>
-</div>
-</div>
-</div>
-</div>
-</div>
-<div class="jp-Cell jp-MarkdownCell jp-Notebook-cell" id="cell-id=178">
-<div class="jp-Cell-inputWrapper" tabindex="0">
-<div class="jp-Collapser jp-InputCollapser jp-Cell-inputCollapser">
-</div>
-<div class="jp-InputArea jp-Cell-inputArea"><div class="jp-InputPrompt jp-InputArea-prompt">
-</div><div class="jp-RenderedHTMLCommon jp-RenderedMarkdown jp-MarkdownOutput" data-mime-type="text/markdown">
-<h3 id="write_all_text_exists">write_all_text_exists<a class="anchor-link" href="#write_all_text_exists">¶</a></h3>
-</div>
-</div>
-</div>
-</div><div class="jp-Cell jp-CodeCell jp-Notebook-cell jp-mod-noOutputs" id="cell-id=179">
-<div class="jp-Cell-inputWrapper" tabindex="0">
-<div class="jp-Collapser jp-InputCollapser jp-Cell-inputCollapser">
-</div>
-<div class="jp-InputArea jp-Cell-inputArea">
-<div class="jp-InputPrompt jp-InputArea-prompt">In [ ]:</div>
-<div class="jp-CodeMirrorEditor jp-Editor jp-InputArea-editor" data-type="inline">
-<div class="cm-editor cm-s-jupyter">
-<div class="highlight hl-ipython3"><pre><span></span><span class="n">let</span> <span class="n">write_all_text_exists</span> <span class="n">path</span> <span class="n">contents</span> <span class="o">=</span>
-    <span class="n">inl</span> <span class="n">exists</span><span class="s1">' = contents |&gt; file_exists_content path</span>
-    <span class="k">if</span> <span class="ow">not</span> <span class="n">exists</span><span class="s1">'</span>
-    <span class="n">then</span> <span class="n">contents</span> <span class="o">|&gt;</span> <span class="n">write_all_text</span> <span class="n">path</span>
-</pre></div>
-</div>
-</div>
-</div>
-</div>
-</div>
-<div class="jp-Cell jp-MarkdownCell jp-Notebook-cell" id="cell-id=180">
-<div class="jp-Cell-inputWrapper" tabindex="0">
-<div class="jp-Collapser jp-InputCollapser jp-Cell-inputCollapser">
-</div>
-<div class="jp-InputArea jp-Cell-inputArea"><div class="jp-InputPrompt jp-InputArea-prompt">
-</div><div class="jp-RenderedHTMLCommon jp-RenderedMarkdown jp-MarkdownOutput" data-mime-type="text/markdown">
 <h2 id="fsharp">fsharp<a class="anchor-link" href="#fsharp">¶</a></h2>
 </div>
 </div>
 </div>
 </div>
-<div class="jp-Cell jp-MarkdownCell jp-Notebook-cell" id="cell-id=181">
+<div class="jp-Cell jp-MarkdownCell jp-Notebook-cell" id="cell-id=176">
 <div class="jp-Cell-inputWrapper" tabindex="0">
 <div class="jp-Collapser jp-InputCollapser jp-Cell-inputCollapser">
 </div>
@@ -10527,7 +10455,7 @@ <h3 id="file_exists_content_async">file_exists_content_async<a class="anchor-lin
 </div>
 </div>
 </div>
-</div><div class="jp-Cell jp-CodeCell jp-Notebook-cell jp-mod-noOutputs" id="cell-id=182">
+</div><div class="jp-Cell jp-CodeCell jp-Notebook-cell jp-mod-noOutputs" id="cell-id=177">
 <div class="jp-Cell-inputWrapper" tabindex="0">
 <div class="jp-Collapser jp-InputCollapser jp-Cell-inputCollapser">
 </div>
@@ -10553,7 +10481,7 @@ <h3 id="file_exists_content_async">file_exists_content_async<a class="anchor-lin
 </div>
 </div>
 </div>
-<div class="jp-Cell jp-MarkdownCell jp-Notebook-cell" id="cell-id=183">
+<div class="jp-Cell jp-MarkdownCell jp-Notebook-cell" id="cell-id=178">
 <div class="jp-Cell-inputWrapper" tabindex="0">
 <div class="jp-Collapser jp-InputCollapser jp-Cell-inputCollapser">
 </div>
@@ -10563,7 +10491,7 @@ <h3 id="write_all_text_exists_async">write_all_text_exists_async<a class="anchor
 </div>
 </div>
 </div>
-</div><div class="jp-Cell jp-CodeCell jp-Notebook-cell jp-mod-noOutputs" id="cell-id=184">
+</div><div class="jp-Cell jp-CodeCell jp-Notebook-cell jp-mod-noOutputs" id="cell-id=179">
 <div class="jp-Cell-inputWrapper" tabindex="0">
 <div class="jp-Collapser jp-InputCollapser jp-Cell-inputCollapser">
 </div>
@@ -10583,7 +10511,7 @@ <h3 id="write_all_text_exists_async">write_all_text_exists_async<a class="anchor
 </div>
 </div>
 </div>
-<div class="jp-Cell jp-MarkdownCell jp-Notebook-cell" id="cell-id=185">
+<div class="jp-Cell jp-MarkdownCell jp-Notebook-cell" id="cell-id=180">
 <div class="jp-Cell-inputWrapper" tabindex="0">
 <div class="jp-Collapser jp-InputCollapser jp-Cell-inputCollapser">
 </div>
@@ -10593,7 +10521,7 @@ <h3 id="delete_directory_async">delete_directory_async<a class="anchor-link" hre
 </div>
 </div>
 </div>
-</div><div class="jp-Cell jp-CodeCell jp-Notebook-cell jp-mod-noOutputs" id="cell-id=186">
+</div><div class="jp-Cell jp-CodeCell jp-Notebook-cell jp-mod-noOutputs" id="cell-id=181">
 <div class="jp-Cell-inputWrapper" tabindex="0">
 <div class="jp-Collapser jp-InputCollapser jp-Cell-inputCollapser">
 </div>
@@ -10627,7 +10555,7 @@ <h3 id="delete_directory_async">delete_directory_async<a class="anchor-link" hre
 </div>
 </div>
 </div>
-<div class="jp-Cell jp-MarkdownCell jp-Notebook-cell" id="cell-id=187">
+<div class="jp-Cell jp-MarkdownCell jp-Notebook-cell" id="cell-id=182">
 <div class="jp-Cell-inputWrapper" tabindex="0">
 <div class="jp-Collapser jp-InputCollapser jp-Cell-inputCollapser">
 </div>
@@ -10637,7 +10565,7 @@ <h3 id="trace_file">trace_file<a class="anchor-link" href="#trace_file">¶</a></
 </div>
 </div>
 </div>
-</div><div class="jp-Cell jp-CodeCell jp-Notebook-cell jp-mod-noOutputs" id="cell-id=188">
+</div><div class="jp-Cell jp-CodeCell jp-Notebook-cell jp-mod-noOutputs" id="cell-id=183">
 <div class="jp-Cell-inputWrapper" tabindex="0">
 <div class="jp-Collapser jp-InputCollapser jp-Cell-inputCollapser">
 </div>
@@ -10667,7 +10595,7 @@ <h3 id="trace_file">trace_file<a class="anchor-link" href="#trace_file">¶</a></
 </div>
 </div>
 </div>
-</div><div class="jp-Cell jp-CodeCell jp-Notebook-cell" id="cell-id=189">
+</div><div class="jp-Cell jp-CodeCell jp-Notebook-cell" id="cell-id=184">
 <div class="jp-Cell-inputWrapper" tabindex="0">
 <div class="jp-Collapser jp-InputCollapser jp-Cell-inputCollapser">
 </div>
@@ -10703,14 +10631,14 @@ <h3 id="trace_file">trace_file<a class="anchor-link" href="#trace_file">¶</a></
 <div class="jp-OutputArea-child">
 <div class="jp-OutputPrompt jp-OutputArea-prompt"></div>
 <div class="jp-RenderedText jp-OutputArea-output" data-mime-type="text/plain" tabindex="0">
-<pre>assert_eq / actual: 20L / expected: 20L
+<pre>assert_eq / actual: 1L / expected: 1L
 </pre>
 </div>
 </div>
 </div>
 </div>
 </div>
-<div class="jp-Cell jp-MarkdownCell jp-Notebook-cell" id="cell-id=190">
+<div class="jp-Cell jp-MarkdownCell jp-Notebook-cell" id="cell-id=185">
 <div class="jp-Cell-inputWrapper" tabindex="0">
 <div class="jp-Collapser jp-InputCollapser jp-Cell-inputCollapser">
 </div>
@@ -10720,7 +10648,7 @@ <h3 id="init_trace_file">init_trace_file<a class="anchor-link" href="#init_trace
 </div>
 </div>
 </div>
-</div><div class="jp-Cell jp-CodeCell jp-Notebook-cell jp-mod-noOutputs" id="cell-id=191">
+</div><div class="jp-Cell jp-CodeCell jp-Notebook-cell jp-mod-noOutputs" id="cell-id=186">
 <div class="jp-Cell-inputWrapper" tabindex="0">
 <div class="jp-Collapser jp-InputCollapser jp-Cell-inputCollapser">
 </div>
@@ -10737,7 +10665,7 @@ <h3 id="init_trace_file">init_trace_file<a class="anchor-link" href="#init_trace
 </div>
 </div>
 </div>
-<div class="jp-Cell jp-MarkdownCell jp-Notebook-cell" id="cell-id=192">
+<div class="jp-Cell jp-MarkdownCell jp-Notebook-cell" id="cell-id=187">
 <div class="jp-Cell-inputWrapper" tabindex="0">
 <div class="jp-Collapser jp-InputCollapser jp-Cell-inputCollapser">
 </div>
@@ -10748,7 +10676,7 @@ <h2 id="file_system">file_system<a class="anchor-link" href="#file_system">¶</a
 </div>
 </div>
 </div>
-<div class="jp-Cell jp-MarkdownCell jp-Notebook-cell" id="cell-id=193">
+<div class="jp-Cell jp-MarkdownCell jp-Notebook-cell" id="cell-id=188">
 <div class="jp-Cell-inputWrapper" tabindex="0">
 <div class="jp-Collapser jp-InputCollapser jp-Cell-inputCollapser">
 </div>
@@ -10758,7 +10686,7 @@ <h3 id="create_dir">create_dir<a class="anchor-link" href="#create_dir">¶</a></
 </div>
 </div>
 </div>
-</div><div class="jp-Cell jp-CodeCell jp-Notebook-cell jp-mod-noOutputs" id="cell-id=194">
+</div><div class="jp-Cell jp-CodeCell jp-Notebook-cell jp-mod-noOutputs" id="cell-id=189">
 <div class="jp-Cell-inputWrapper" tabindex="0">
 <div class="jp-Collapser jp-InputCollapser jp-Cell-inputCollapser">
 </div>
@@ -10805,7 +10733,7 @@ <h3 id="create_dir">create_dir<a class="anchor-link" href="#create_dir">¶</a></
 </div>
 </div>
 </div>
-<div class="jp-Cell jp-MarkdownCell jp-Notebook-cell" id="cell-id=195">
+<div class="jp-Cell jp-MarkdownCell jp-Notebook-cell" id="cell-id=190">
 <div class="jp-Cell-inputWrapper" tabindex="0">
 <div class="jp-Collapser jp-InputCollapser jp-Cell-inputCollapser">
 </div>
@@ -10815,7 +10743,7 @@ <h3 id="create_temp_dir">create_temp_dir<a class="anchor-link" href="#create_tem
 </div>
 </div>
 </div>
-</div><div class="jp-Cell jp-CodeCell jp-Notebook-cell jp-mod-noOutputs" id="cell-id=196">
+</div><div class="jp-Cell jp-CodeCell jp-Notebook-cell jp-mod-noOutputs" id="cell-id=191">
 <div class="jp-Cell-inputWrapper" tabindex="0">
 <div class="jp-Collapser jp-InputCollapser jp-Cell-inputCollapser">
 </div>
@@ -10831,7 +10759,7 @@ <h3 id="create_temp_dir">create_temp_dir<a class="anchor-link" href="#create_tem
 </div>
 </div>
 </div>
-</div><div class="jp-Cell jp-CodeCell jp-Notebook-cell" id="cell-id=197">
+</div><div class="jp-Cell jp-CodeCell jp-Notebook-cell" id="cell-id=192">
 <div class="jp-Cell-inputWrapper" tabindex="0">
 <div class="jp-Collapser jp-InputCollapser jp-Cell-inputCollapser">
 </div>
@@ -10865,7 +10793,7 @@ <h3 id="create_temp_dir">create_temp_dir<a class="anchor-link" href="#create_tem
 </div>
 </div>
 </div>
-</div><div class="jp-Cell jp-CodeCell jp-Notebook-cell" id="cell-id=198">
+</div><div class="jp-Cell jp-CodeCell jp-Notebook-cell" id="cell-id=193">
 <div class="jp-Cell-inputWrapper" tabindex="0">
 <div class="jp-Collapser jp-InputCollapser jp-Cell-inputCollapser">
 </div>
@@ -10897,7 +10825,7 @@ <h3 id="create_temp_dir">create_temp_dir<a class="anchor-link" href="#create_tem
 <div class="jp-OutputArea-child">
 <div class="jp-OutputPrompt jp-OutputArea-prompt"></div>
 <div class="jp-RenderedText jp-OutputArea-output" data-mime-type="text/plain" tabindex="0">
-<pre>00:00:00 <span class="ansi-black-intense-fg">verbose</span> #1 file_system.create_dir / { dir = C:\Users\i574n\AppData\Local\Temp\!create_temp_path_\spiral_builder_79aa2bb3243bce9eba7cf5cba34e122cd4c376a4590d1dc85b01b8e14dcb4fff\20240701-1321-5040-8722-000000ee20eb }
+<pre>00:00:00 <span class="ansi-black-intense-fg">verbose</span> #1 file_system.create_dir / { dir = C:\Users\i574n\AppData\Local\Temp\!create_temp_path_\spiral_builder_79aa2bb3243bce9eba7cf5cba34e122cd4c376a4590d1dc85b01b8e14dcb4fff\20240701-1751-1424-6096-000000114794 }
 assert_eq / actual: true / expected: true
 assert_eq / actual: false / expected: false
 </pre>
@@ -10905,7 +10833,7 @@ <h3 id="create_temp_dir">create_temp_dir<a class="anchor-link" href="#create_tem
 </div>
 </div>
 </div>
-</div><div class="jp-Cell jp-CodeCell jp-Notebook-cell" id="cell-id=199">
+</div><div class="jp-Cell jp-CodeCell jp-Notebook-cell" id="cell-id=194">
 <div class="jp-Cell-inputWrapper" tabindex="0">
 <div class="jp-Collapser jp-InputCollapser jp-Cell-inputCollapser">
 </div>
@@ -10986,7 +10914,7 @@ <h3 id="create_temp_dir">create_temp_dir<a class="anchor-link" href="#create_tem
 00:00:02 <span class="ansi-blue-intense-fg">  debug</span> #9 _3
 00:00:02 <span class="ansi-blue-intense-fg">  debug</span> #10 5
 00:00:02 <span class="ansi-blue-intense-fg">  debug</span> #11 6
-assert_between / actual: 126L / expected: struct (50L, 180L)
+assert_between / actual: 124L / expected: struct (50L, 180L)
 assert_eq / actual: true / expected: true
 </pre>
 </div>
@@ -10994,7 +10922,7 @@ <h3 id="create_temp_dir">create_temp_dir<a class="anchor-link" href="#create_tem
 </div>
 </div>
 </div>
-<div class="jp-Cell jp-MarkdownCell jp-Notebook-cell" id="cell-id=200">
+<div class="jp-Cell jp-MarkdownCell jp-Notebook-cell" id="cell-id=195">
 <div class="jp-Cell-inputWrapper" tabindex="0">
 <div class="jp-Collapser jp-InputCollapser jp-Cell-inputCollapser">
 </div>
@@ -11004,7 +10932,7 @@ <h3 id="create_temp_dir'">create_temp_dir'<a class="anchor-link" href="#create_t
 </div>
 </div>
 </div>
-</div><div class="jp-Cell jp-CodeCell jp-Notebook-cell jp-mod-noOutputs" id="cell-id=201">
+</div><div class="jp-Cell jp-CodeCell jp-Notebook-cell jp-mod-noOutputs" id="cell-id=196">
 <div class="jp-Cell-inputWrapper" tabindex="0">
 <div class="jp-Collapser jp-InputCollapser jp-Cell-inputCollapser">
 </div>
@@ -11021,7 +10949,7 @@ <h3 id="create_temp_dir'">create_temp_dir'<a class="anchor-link" href="#create_t
 </div>
 </div>
 </div>
-<div class="jp-Cell jp-MarkdownCell jp-Notebook-cell" id="cell-id=202">
+<div class="jp-Cell jp-MarkdownCell jp-Notebook-cell" id="cell-id=197">
 <div class="jp-Cell-inputWrapper" tabindex="0">
 <div class="jp-Collapser jp-InputCollapser jp-Cell-inputCollapser">
 </div>
@@ -11031,7 +10959,7 @@ <h3 id="link_directory">link_directory<a class="anchor-link" href="#link_directo
 </div>
 </div>
 </div>
-</div><div class="jp-Cell jp-CodeCell jp-Notebook-cell jp-mod-noOutputs" id="cell-id=203">
+</div><div class="jp-Cell jp-CodeCell jp-Notebook-cell jp-mod-noOutputs" id="cell-id=198">
 <div class="jp-Cell-inputWrapper" tabindex="0">
 <div class="jp-Collapser jp-InputCollapser jp-Cell-inputCollapser">
 </div>
@@ -11059,6 +10987,81 @@ <h3 id="link_directory">link_directory<a class="anchor-link" href="#link_directo
 </div>
 </div>
 </div>
+<div class="jp-Cell jp-MarkdownCell jp-Notebook-cell" id="cell-id=199">
+<div class="jp-Cell-inputWrapper" tabindex="0">
+<div class="jp-Collapser jp-InputCollapser jp-Cell-inputCollapser">
+</div>
+<div class="jp-InputArea jp-Cell-inputArea"><div class="jp-InputPrompt jp-InputArea-prompt">
+</div><div class="jp-RenderedHTMLCommon jp-RenderedMarkdown jp-MarkdownOutput" data-mime-type="text/markdown">
+<h2 id="rust">rust<a class="anchor-link" href="#rust">¶</a></h2>
+</div>
+</div>
+</div>
+</div>
+<div class="jp-Cell jp-MarkdownCell jp-Notebook-cell" id="cell-id=200">
+<div class="jp-Cell-inputWrapper" tabindex="0">
+<div class="jp-Collapser jp-InputCollapser jp-Cell-inputCollapser">
+</div>
+<div class="jp-InputArea jp-Cell-inputArea"><div class="jp-InputPrompt jp-InputArea-prompt">
+</div><div class="jp-RenderedHTMLCommon jp-RenderedMarkdown jp-MarkdownOutput" data-mime-type="text/markdown">
+<h3 id="file_exists_content">file_exists_content<a class="anchor-link" href="#file_exists_content">¶</a></h3>
+</div>
+</div>
+</div>
+</div><div class="jp-Cell jp-CodeCell jp-Notebook-cell jp-mod-noOutputs" id="cell-id=201">
+<div class="jp-Cell-inputWrapper" tabindex="0">
+<div class="jp-Collapser jp-InputCollapser jp-Cell-inputCollapser">
+</div>
+<div class="jp-InputArea jp-Cell-inputArea">
+<div class="jp-InputPrompt jp-InputArea-prompt">In [ ]:</div>
+<div class="jp-CodeMirrorEditor jp-Editor jp-InputArea-editor" data-type="inline">
+<div class="cm-editor cm-s-jupyter">
+<div class="highlight hl-ipython3"><pre><span></span><span class="n">let</span> <span class="n">file_exists_content</span> <span class="n">path</span> <span class="n">content</span> <span class="p">:</span> <span class="nb">bool</span> <span class="o">=</span>
+    <span class="n">run_target</span> <span class="n">function</span>
+        <span class="o">|</span> <span class="n">Rust</span> <span class="p">(</span><span class="n">Native</span><span class="p">)</span> <span class="o">=&gt;</span> <span class="n">fun</span> <span class="p">()</span> <span class="o">=&gt;</span>
+            <span class="k">if</span> <span class="n">path</span> <span class="o">|&gt;</span> <span class="n">file_exists</span> <span class="o">|&gt;</span> <span class="ow">not</span>
+            <span class="n">then</span> <span class="n">false</span>
+            <span class="k">else</span>
+                <span class="n">inl</span> <span class="n">existing_content</span> <span class="o">=</span> <span class="n">path</span> <span class="o">|&gt;</span> <span class="n">read_all_text</span>
+                <span class="n">content</span> <span class="o">=</span> <span class="n">existing_content</span>
+        <span class="o">|</span> <span class="n">_</span> <span class="o">=&gt;</span> <span class="n">fun</span> <span class="p">()</span> <span class="o">=&gt;</span> <span class="n">null</span> <span class="p">()</span>
+</pre></div>
+</div>
+</div>
+</div>
+</div>
+</div>
+<div class="jp-Cell jp-MarkdownCell jp-Notebook-cell" id="cell-id=202">
+<div class="jp-Cell-inputWrapper" tabindex="0">
+<div class="jp-Collapser jp-InputCollapser jp-Cell-inputCollapser">
+</div>
+<div class="jp-InputArea jp-Cell-inputArea"><div class="jp-InputPrompt jp-InputArea-prompt">
+</div><div class="jp-RenderedHTMLCommon jp-RenderedMarkdown jp-MarkdownOutput" data-mime-type="text/markdown">
+<h3 id="write_all_text_exists">write_all_text_exists<a class="anchor-link" href="#write_all_text_exists">¶</a></h3>
+</div>
+</div>
+</div>
+</div><div class="jp-Cell jp-CodeCell jp-Notebook-cell jp-mod-noOutputs" id="cell-id=203">
+<div class="jp-Cell-inputWrapper" tabindex="0">
+<div class="jp-Collapser jp-InputCollapser jp-Cell-inputCollapser">
+</div>
+<div class="jp-InputArea jp-Cell-inputArea">
+<div class="jp-InputPrompt jp-InputArea-prompt">In [ ]:</div>
+<div class="jp-CodeMirrorEditor jp-Editor jp-InputArea-editor" data-type="inline">
+<div class="cm-editor cm-s-jupyter">
+<div class="highlight hl-ipython3"><pre><span></span><span class="n">let</span> <span class="n">write_all_text_exists</span> <span class="n">path</span> <span class="n">contents</span> <span class="o">=</span>
+    <span class="n">inl</span> <span class="n">exists</span><span class="s1">' = contents |&gt; file_exists_content path</span>
+    <span class="k">if</span> <span class="ow">not</span> <span class="n">exists</span><span class="s1">' then</span>
+        <span class="n">inl</span> <span class="nb">dir</span> <span class="o">=</span> <span class="n">path</span> <span class="o">|&gt;</span> <span class="n">get_directory_name</span>
+        <span class="k">if</span> <span class="nb">dir</span> <span class="o">|&gt;</span> <span class="n">directory_exists</span> <span class="o">|&gt;</span> <span class="ow">not</span>
+        <span class="n">then</span> <span class="nb">dir</span> <span class="o">|&gt;</span> <span class="n">create_dir</span> <span class="o">|&gt;</span> <span class="n">ignore</span>
+        <span class="n">contents</span> <span class="o">|&gt;</span> <span class="n">write_all_text</span> <span class="n">path</span>
+</pre></div>
+</div>
+</div>
+</div>
+</div>
+</div>
 <div class="jp-Cell jp-MarkdownCell jp-Notebook-cell" id="cell-id=204">
 <div class="jp-Cell-inputWrapper" tabindex="0">
 <div class="jp-Collapser jp-InputCollapser jp-Cell-inputCollapser">
@@ -11221,8 +11224,8 @@ <h3 id="wait_for_file_access">wait_for_file_access<a class="anchor-link" href="#
 00:00:00 <span class="ansi-blue-intense-fg">  debug</span> #5 _2
 00:00:00 <span class="ansi-blue-intense-fg">  debug</span> #6 4
 00:00:01 <span class="ansi-blue-intense-fg">  debug</span> #7 file_system.wait_for_file_access / { path = test.txt; retry = 100; ex = System.IO.IOException: The process cannot access the file 'C:\Users\i574n\AppData\Local\Temp\!create_temp_path_\dotnet-repl\613830ed-016e-d959-8d21-02dc1c63c252\test.txt' because it is being used by another process. }
-00:00:02 <span class="ansi-blue-intense-fg">  debug</span> #8 _3
-00:00:02 <span class="ansi-blue-intense-fg">  debug</span> #9 _4
+00:00:01 <span class="ansi-blue-intense-fg">  debug</span> #8 _3
+00:00:01 <span class="ansi-blue-intense-fg">  debug</span> #9 _4
 00:00:02 <span class="ansi-blue-intense-fg">  debug</span> #10 _5
 00:00:02 <span class="ansi-blue-intense-fg">  debug</span> #11 _6
 00:00:02 <span class="ansi-blue-intense-fg">  debug</span> #12 5
diff --git a/lib/spiral/file_system.dib.ipynb b/lib/spiral/file_system.dib.ipynb
index d7d2eac0..8863def0 100644
--- a/lib/spiral/file_system.dib.ipynb
+++ b/lib/spiral/file_system.dib.ipynb
@@ -1999,7 +1999,7 @@
      "data": {
       "text/plain": [
        ".rs output:\n",
-       "assert_contains / actual: \"C:\\Users\\i574n\\AppData\\Local\\Temp\\!create_temp_path_\\spiral_builder_f2742df0f5e5eefcfba17c19b2ec6967bf389d948aee87a7bf4d904931c1a4ad\\20240701-1319-1610-9315-0000006940a9\" / expected: '\\\\'\n"
+       "assert_contains / actual: \"C:\\Users\\i574n\\AppData\\Local\\Temp\\!create_temp_path_\\spiral_builder_f2742df0f5e5eefcfba17c19b2ec6967bf389d948aee87a7bf4d904931c1a4ad\\20240701-1749-4289-9815-000000515c61\" / expected: '\\\\'\n"
       ]
      },
      "metadata": {},
@@ -2010,7 +2010,7 @@
      "output_type": "stream",
      "text": [
       ".fsx output:\n",
-      "assert_contains / actual: \"C:\\Users\\i574n\\AppData\\Local\\Temp\\!create_temp_path_\\dotnet-repl\\20240701-1319-1667-6768-600400b5b1fd\" / expected: '\\\\'\n"
+      "assert_contains / actual: \"C:\\Users\\i574n\\AppData\\Local\\Temp\\!create_temp_path_\\dotnet-repl\\20240701-1749-4324-2401-20030008d1d6\" / expected: '\\\\'\n"
      ]
     }
    ],
@@ -2715,70 +2715,6 @@
     "        | _ => fun () => null ()"
    ]
   },
-  {
-   "cell_type": "markdown",
-   "metadata": {},
-   "source": [
-    "## rust"
-   ]
-  },
-  {
-   "cell_type": "markdown",
-   "metadata": {},
-   "source": [
-    "### file_exists_content"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {
-    "dotnet_interactive": {
-     "language": "spiral"
-    },
-    "polyglot_notebook": {
-     "kernelName": "spiral"
-    }
-   },
-   "outputs": [],
-   "source": [
-    "let file_exists_content path content : bool =\n",
-    "    run_target function\n",
-    "        | Rust (Native) => fun () =>\n",
-    "            if path |> file_exists |> not\n",
-    "            then false\n",
-    "            else\n",
-    "                inl existing_content = path |> read_all_text\n",
-    "                content = existing_content\n",
-    "        | _ => fun () => null ()"
-   ]
-  },
-  {
-   "cell_type": "markdown",
-   "metadata": {},
-   "source": [
-    "### write_all_text_exists"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {
-    "dotnet_interactive": {
-     "language": "spiral"
-    },
-    "polyglot_notebook": {
-     "kernelName": "spiral"
-    }
-   },
-   "outputs": [],
-   "source": [
-    "let write_all_text_exists path contents =\n",
-    "    inl exists' = contents |> file_exists_content path\n",
-    "    if not exists'\n",
-    "    then contents |> write_all_text path"
-   ]
-  },
   {
    "cell_type": "markdown",
    "metadata": {},
@@ -2945,7 +2881,7 @@
      "name": "stdout",
      "output_type": "stream",
      "text": [
-      "assert_eq / actual: 20L / expected: 20L\n"
+      "assert_eq / actual: 1L / expected: 1L\n"
      ]
     }
    ],
@@ -3126,7 +3062,7 @@
     {
      "data": {
       "text/plain": [
-       "00:00:00 \u001B[90mverbose\u001B[39m #1 file_system.create_dir / { dir = C:\\Users\\i574n\\AppData\\Local\\Temp\\!create_temp_path_\\spiral_builder_79aa2bb3243bce9eba7cf5cba34e122cd4c376a4590d1dc85b01b8e14dcb4fff\\20240701-1321-5040-8722-000000ee20eb }\n",
+       "00:00:00 \u001B[90mverbose\u001B[39m #1 file_system.create_dir / { dir = C:\\Users\\i574n\\AppData\\Local\\Temp\\!create_temp_path_\\spiral_builder_79aa2bb3243bce9eba7cf5cba34e122cd4c376a4590d1dc85b01b8e14dcb4fff\\20240701-1751-1424-6096-000000114794 }\n",
        "assert_eq / actual: true / expected: true\n",
        "assert_eq / actual: false / expected: false\n"
       ]
@@ -3177,7 +3113,7 @@
       "00:00:02 \u001B[94m  debug\u001B[0m #9 _3\n",
       "00:00:02 \u001B[94m  debug\u001B[0m #10 5\n",
       "00:00:02 \u001B[94m  debug\u001B[0m #11 6\n",
-      "assert_between / actual: 126L / expected: struct (50L, 180L)\n",
+      "assert_between / actual: 124L / expected: struct (50L, 180L)\n",
       "assert_eq / actual: true / expected: true\n"
      ]
     }
@@ -3296,6 +3232,73 @@
     "        path |> directory_create_symbolic_link target_path"
    ]
   },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## rust"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "### file_exists_content"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {
+    "dotnet_interactive": {
+     "language": "spiral"
+    },
+    "polyglot_notebook": {
+     "kernelName": "spiral"
+    }
+   },
+   "outputs": [],
+   "source": [
+    "let file_exists_content path content : bool =\n",
+    "    run_target function\n",
+    "        | Rust (Native) => fun () =>\n",
+    "            if path |> file_exists |> not\n",
+    "            then false\n",
+    "            else\n",
+    "                inl existing_content = path |> read_all_text\n",
+    "                content = existing_content\n",
+    "        | _ => fun () => null ()"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "### write_all_text_exists"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {
+    "dotnet_interactive": {
+     "language": "spiral"
+    },
+    "polyglot_notebook": {
+     "kernelName": "spiral"
+    }
+   },
+   "outputs": [],
+   "source": [
+    "let write_all_text_exists path contents =\n",
+    "    inl exists' = contents |> file_exists_content path\n",
+    "    if not exists' then\n",
+    "        inl dir = path |> get_directory_name\n",
+    "        if dir |> directory_exists |> not\n",
+    "        then dir |> create_dir |> ignore\n",
+    "        contents |> write_all_text path"
+   ]
+  },
   {
    "cell_type": "markdown",
    "metadata": {},
@@ -3384,8 +3387,8 @@
       "00:00:00 \u001B[94m  debug\u001B[0m #5 _2\n",
       "00:00:00 \u001B[94m  debug\u001B[0m #6 4\n",
       "00:00:01 \u001B[94m  debug\u001B[0m #7 file_system.wait_for_file_access / { path = test.txt; retry = 100; ex = System.IO.IOException: The process cannot access the file 'C:\\Users\\i574n\\AppData\\Local\\Temp\\!create_temp_path_\\dotnet-repl\\613830ed-016e-d959-8d21-02dc1c63c252\\test.txt' because it is being used by another process. }\n",
-      "00:00:02 \u001B[94m  debug\u001B[0m #8 _3\n",
-      "00:00:02 \u001B[94m  debug\u001B[0m #9 _4\n",
+      "00:00:01 \u001B[94m  debug\u001B[0m #8 _3\n",
+      "00:00:01 \u001B[94m  debug\u001B[0m #9 _4\n",
       "00:00:02 \u001B[94m  debug\u001B[0m #10 _5\n",
       "00:00:02 \u001B[94m  debug\u001B[0m #11 _6\n",
       "00:00:02 \u001B[94m  debug\u001B[0m #12 5\n",
diff --git a/lib/spiral/runtime.dib b/lib/spiral/runtime.dib
index 1a44b7a2..c883df09 100644
--- a/lib/spiral/runtime.dib
+++ b/lib/spiral/runtime.dib
@@ -1130,7 +1130,7 @@ let execute_with_options_async (options : execution_options) : _ (i32 * string)
                     fun () => { options }
 
                 inl utf8 = sm'.encoding_utf8 ()
-                inl arguments = arguments |> optionm.value
+                inl arguments = arguments |> optionm'.default_value ""
 
                 $'let start_info = System.Diagnostics.ProcessStartInfo ('
                 $'  Arguments = !arguments,'
diff --git a/lib/spiral/runtime.fsx b/lib/spiral/runtime.fsx
index 7fd15ecb..dc5f09ea 100644
--- a/lib/spiral/runtime.fsx
+++ b/lib/spiral/runtime.fsx
@@ -4553,7 +4553,8 @@ and method11 (v0 : string, v1 : System.Threading.CancellationToken option, v2 :
     let v48 : string =
         match v30 with
         | US3_1 -> (* None *)
-            failwith<string> "Option does not have a value."
+            let v46 : string = ""
+            v46
         | US3_0(v45) -> (* Some *)
             v45
     let start_info = System.Diagnostics.ProcessStartInfo (
diff --git a/lib/spiral/runtime.spi b/lib/spiral/runtime.spi
index d635e7ad..f52c8cd8 100644
--- a/lib/spiral/runtime.spi
+++ b/lib/spiral/runtime.spi
@@ -566,7 +566,7 @@ let execute_with_options_async (options : execution_options) : _ (i32 * string)
                     fun () => { options }
 
                 inl utf8 = sm'.encoding_utf8 ()
-                inl arguments = arguments |> optionm.value
+                inl arguments = arguments |> optionm'.default_value ""
 
                 $'let start_info = System.Diagnostics.ProcessStartInfo ('
                 $'  Arguments = !arguments,'