From 7f7d4a2b37c3430d430b4885177ca36eae9034fa Mon Sep 17 00:00:00 2001
From: dane <dane@medieval.software>
Date: Sat, 6 Dec 2025 16:05:12 -0500
Subject: [PATCH] feat: use XDG_DATA_HOME for install directory

Install binary to $XDG_DATA_HOME/opencode/bin instead of ~/.opencode/bin
to follow XDG Base Directory specification.

- Defaults to ~/.local/share/opencode/bin if XDG_DATA_HOME is not set
- Migrates existing installations from ~/.opencode/bin automatically
- Compatible with existing upgrade detection logic

Fixes #5176
---
 install | 18 +++++++++++++++++-
 1 file changed, 17 insertions(+), 1 deletion(-)

diff --git a/install b/install
index c6f209734..64ae56671 100755
--- a/install
+++ b/install
@@ -99,7 +99,9 @@ else
     fi
 fi
 
-INSTALL_DIR=$HOME/.opencode/bin
+XDG_DATA_HOME="${XDG_DATA_HOME:-$HOME/.local/share}"
+INSTALL_DIR="$XDG_DATA_HOME/opencode/bin"
+LEGACY_DIR="$HOME/.opencode/bin"
 mkdir -p "$INSTALL_DIR"
 
 if [ -z "$requested_version" ]; then
@@ -148,6 +150,19 @@ check_version() {
     fi
 }
 
+migrate_legacy_installation() {
+    # Migrate from ~/.opencode/bin to XDG location if needed
+    if [ -d "$LEGACY_DIR" ] && [ "$LEGACY_DIR" != "$INSTALL_DIR" ]; then
+        if [ -f "$LEGACY_DIR/opencode" ]; then
+            print_message info "${MUTED}Migrating from ${NC}$LEGACY_DIR${MUTED} to ${NC}$INSTALL_DIR"
+            mv "$LEGACY_DIR/opencode" "$INSTALL_DIR/opencode" 2>/dev/null || true
+            # Try to clean up empty directories
+            rmdir "$LEGACY_DIR" 2>/dev/null || true
+            rmdir "$HOME/.opencode" 2>/dev/null || true
+        fi
+    fi
+}
+
 unbuffered_sed() {
     if echo | sed -u -e "" >/dev/null 2>&1; then
         sed -nu "$@"
@@ -259,6 +274,7 @@ download_and_install() {
 }
 
 check_version
+migrate_legacy_installation
 download_and_install