Add setup guide for XTchain

content/contributing/setting-up-xtchain.md

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+title = 'Setting up XTchain'
+date = 2025-07-16T19:29:14+02:00
++++
+XTchain is a script-based compilation environment designed to streamline complex build processes across multiple platforms.
+This guide explains how to set up and use XTchain efficiently on your system. You will learn how to launch the XTchain
+environment, configure your terminal for convenience, and ensure that your development setup is ready for building projects
+like ExectOS.
+
+## Setting Up XTchain on Windows
+On Windows, the simplest way to launch XTchain is by defining a dedicated profile in Windows Terminal that automatically
+opens PowerShell, loads the XTchain environment, and remains interactive for further commands.
+
+### 1. Create a Custom Windows Terminal Profile
+A dedicated terminal profile ensures that every time you open XTchain, the environment is preconfigured and ready to use.
+
+ 1. Open **Windows Terminal**.
+ 2. Click the down-arrow next to a tab and select **Settings**.
+ 3. Choose **Add a new profile**.
+ 4. In the **Command line** field, enter:
+```
+%SystemRoot%\System32\WindowsPowerShell\v1.0\powershell.exe -ExecutionPolicy Bypass -NoExit -File "C:\Path\To\XTchain\xtchain.ps1"
+```
+Replace C:\Path\To\XTchain with the actual folder where xtchain.ps1 resides. Give the profile a name (for example, XTchain),
+assign an icon if desired, and save the settings. Now when you select the XTchain profile, Windows Terminal will launch
+PowerShell, bypass execution restrictions, run the initialization script, and keep the window open. The command works as follows:
+it starts the built-in PowerShell executable (%SystemRoot%\System32\WindowsPowerShell\v1.0\powershell.exe), temporarily disables
+the script execution policy with **-ExecutionPolicy Bypass**, prevents the terminal from closing after the script finishes using
+**-NoExit**, and runs the XTchain initialization script specified with **-File "C:\Path\To\XTchain\xtchain.ps1"**. This setup
+ensures that the XTchain environment is ready every time you open the terminal.
+
+### 2. Handling Execution Policy Errors
+When running the profile, you might see the following error message: **File ... cannot be loaded because running scripts is
+disabled on this system.**. This indicates that your system’s execution policy is set to block all or unsigned scripts. To
+permanently fix it, open PowerShell as Administrator and enter:
+```
+Set-ExecutionPolicy RemoteSigned
+```
+This policy allows:
+ - All locally created scripts (including xtchain.ps1) to run without signing.
+ - Scripts downloaded from the internet to require a trusted digital signature.
+Warning: Only change execution policy if you trust the scripts you run.