From 287b5b1eab2b059357b6cf6615c8172334e1ed42 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Adrien=20Gallou=C3=ABt?= <angt@huggingface.co>
Date: Thu, 26 Mar 2026 20:34:23 +0100
Subject: [PATCH] common : add getpwuid fallback for HF cache when HOME is not
 set (#21035)
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Signed-off-by: Adrien Gallouët <angt@huggingface.co>
---
 common/hf-cache.cpp | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/common/hf-cache.cpp b/common/hf-cache.cpp
index 80dcab0177..665c9ff066 100644
--- a/common/hf-cache.cpp
+++ b/common/hf-cache.cpp
@@ -26,6 +26,8 @@ namespace nl = nlohmann;
 #include <windows.h>
 #else
 #define HOME_DIR "HOME"
+#include <unistd.h>
+#include <pwd.h>
 #endif
 
 namespace hf_cache {
@@ -51,6 +53,13 @@ static fs::path get_cache_directory() {
                 return entry.path.empty() ? base : base / entry.path;
             }
         }
+#ifndef _WIN32
+        const struct passwd * pw = getpwuid(getuid());
+
+        if (pw->pw_dir && *pw->pw_dir) {
+            return fs::path(pw->pw_dir) / ".cache" / "huggingface" / "hub";
+        }
+#endif
         throw std::runtime_error("Failed to determine HF cache directory");
     }();