From 3a2ea4d0be4b2f20709971c04b29c3236db9538c Mon Sep 17 00:00:00 2001
From: Rhuan Barreto <rhuan@barreto.work>
Date: Wed, 18 Mar 2026 21:28:28 +0100
Subject: [PATCH] fix: use PROCESSOR_ARCHITECTURE env var for Windows arch
 detection in installer

RuntimeInformation::OSArchitecture returns a .NET enum that can
stringify as empty when the script is run via `irm | iex`, causing
the installer to reject valid x64 systems. PROCESSOR_ARCHITECTURE
is a reliable Windows env var that always returns "AMD64" for x64.
---
 install.ps1 | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/install.ps1 b/install.ps1
index 699485a1..89f92cdd 100644
--- a/install.ps1
+++ b/install.ps1
@@ -8,8 +8,8 @@ $InstallDir = if ($env:ARCHGATE_INSTALL_DIR) { $env:ARCHGATE_INSTALL_DIR } else
 
 # --- Check architecture ---
 
-$Arch = [System.Runtime.InteropServices.RuntimeInformation]::OSArchitecture
-if ($Arch -ne "X64") {
+$Arch = $env:PROCESSOR_ARCHITECTURE
+if ($Arch -ne "AMD64") {
     Write-Error "Error: unsupported architecture: $Arch. archgate supports x64 only on Windows."
     exit 1
 }