fix: make windows installer checksum independent of get-filehash

refs #751

1 files changed, 6 insertions, 0 deletions

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}"))?;