From 618e259b0bc1c4c1427f6ef7b4f37a36b34b57aa Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Wed, 4 Mar 2026 14:25:01 +0000
Subject: [PATCH 1/3] Initial plan


From 1832f5817e39bf4cadc8baa0b4672e5e9a038f68 Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Wed, 4 Mar 2026 14:29:16 +0000
Subject: [PATCH 2/3] fix(osx): use stat -f%Su /dev/console to determine real
 user in postinstall script

Co-authored-by: marekzmyslowski <1062877+marekzmyslowski@users.noreply.github.com>
---
 src/osx/Installer.Mac/scripts/postinstall | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/osx/Installer.Mac/scripts/postinstall b/src/osx/Installer.Mac/scripts/postinstall
index 9eed9aa7a..403ced46f 100755
--- a/src/osx/Installer.Mac/scripts/postinstall
+++ b/src/osx/Installer.Mac/scripts/postinstall
@@ -31,7 +31,10 @@ mkdir -p /usr/local/bin
 /bin/ln -Fs "$INSTALL_DESTINATION/git-credential-manager" /usr/local/bin/git-credential-manager
 
 # Configure GCM for the current user (running as the current user to avoid root
-# from taking ownership of ~/.gitconfig)
-sudo -u ${USER} "$INSTALL_DESTINATION/git-credential-manager" configure
+# from taking ownership of ~/.gitconfig).
+# Use stat to determine the console user since the installer may be invoked with
+# USER unset (e.g. when run via Homebrew which explicitly clears USER).
+REAL_USER=$(stat -f%Su /dev/console)
+sudo -u "${REAL_USER}" "$INSTALL_DESTINATION/git-credential-manager" configure
 
 exit 0

From 66ac576b331522bdf58c1a9ca379309dd1fe0066 Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Thu, 12 Mar 2026 09:42:16 +0000
Subject: [PATCH 3/3] fix(osx): handle headless/SSH installs in postinstall
 with SUDO_USER fallback

Co-authored-by: marekzmyslowski <1062877+marekzmyslowski@users.noreply.github.com>
---
 src/osx/Installer.Mac/scripts/postinstall | 20 ++++++++++++++++----
 1 file changed, 16 insertions(+), 4 deletions(-)

diff --git a/src/osx/Installer.Mac/scripts/postinstall b/src/osx/Installer.Mac/scripts/postinstall
index 403ced46f..4d64599b6 100755
--- a/src/osx/Installer.Mac/scripts/postinstall
+++ b/src/osx/Installer.Mac/scripts/postinstall
@@ -32,9 +32,21 @@ mkdir -p /usr/local/bin
 
 # Configure GCM for the current user (running as the current user to avoid root
 # from taking ownership of ~/.gitconfig).
-# Use stat to determine the console user since the installer may be invoked with
-# USER unset (e.g. when run via Homebrew which explicitly clears USER).
-REAL_USER=$(stat -f%Su /dev/console)
-sudo -u "${REAL_USER}" "$INSTALL_DESTINATION/git-credential-manager" configure
+# Determine the real (non-root) user via multiple methods since the installer
+# may be invoked with USER/LOGNAME unset (e.g. when run via Homebrew which
+# explicitly clears those environment variables).
+# 1. SUDO_USER - set by sudo, works for both GUI (Homebrew) and SSH scenarios.
+# 2. stat /dev/console - works for GUI sessions when not running under sudo.
+REAL_USER="${SUDO_USER}"
+if [ -z "${REAL_USER}" ] || [ "${REAL_USER}" = "root" ]; then
+    REAL_USER=$(stat -f%Su /dev/console 2>/dev/null)
+fi
+
+if [ -n "${REAL_USER}" ] && [ "${REAL_USER}" != "root" ]; then
+    sudo -u "${REAL_USER}" "$INSTALL_DESTINATION/git-credential-manager" configure
+else
+    echo "warning: unable to determine the installing user; GCM has not been configured automatically." >&2
+    echo "warning: run 'git-credential-manager configure' to configure GCM for your user." >&2
+fi
 
 exit 0