From d7ae163f8888cd9bf13e5a34e4d37f9518f76c01 Mon Sep 17 00:00:00 2001
From: Ogulcan Celik <ogulcancelik@gmail.com>
Date: Mon, 22 Jun 2026 23:25:40 +0300
Subject: fix: make windows installer checksum independent of get-filehash

refs #751
---
 src/update.rs | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'src')

diff --git a/src/update.rs b/src/update.rs
index bedcc1b0..bceef7b0 100644
--- a/src/update.rs
+++ b/src/update.rs
@@ -638,6 +638,12 @@ fn install_windows_update_with_installer(channel: UpdateChannel) -> Result<(), S
             "irm https://herdr.dev/install.ps1 | iex",
         ])
         .env("HERDR_CHANNEL", channel.as_str())
+        // Drop any inherited PSModulePath. When herdr is launched from
+        // PowerShell 7, its Core module paths come first and Windows
+        // PowerShell 5.1 (this `powershell`) fails to autoload cmdlets like
+        // Get-FileHash. Removing it lets 5.1 compute its own default path.
+        // See PowerShell/PowerShell#8635.
+        .env_remove("PSModulePath")
         .status()
         .map_err(|err| format!("failed to run Windows installer: {err}"))?;
 
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