--- a/unsloth_cli/commands/studio.py
+++ b/unsloth_cli/commands/studio.py
@@ -1907,6 +1907,11 @@
     # must_change_password=1 with no password to log in.
     studio_venv_dir = STUDIO_HOME / "unsloth_studio"
     in_studio_venv = sys.prefix.startswith(str(studio_venv_dir))
+    # Gentoo system install (sci-ml/unsloth[studio]): the studio backend and its
+    # dependencies live in the system interpreter, so serve in-process instead of
+    # re-execing into a ~/.unsloth/studio venv or demanding install.sh.
+    if os.environ.get("UNSLOTH_STUDIO_SYSTEM") == "1":
+        in_studio_venv = True
     # Before any of the three launch paths below, and before the environment is handed
     # to a child: an override contradicting single-arch wheels makes every kernel launch
     # fail, and the installer's own unset cannot reach a launch it does not perform (#7331).
@@ -2590,6 +2595,11 @@
     # leave must_change_password=1 with no password to log in.
     studio_venv_dir = STUDIO_HOME / "unsloth_studio"
     in_studio_venv = sys.prefix.startswith(str(studio_venv_dir))
+    # Gentoo system install (sci-ml/unsloth[studio]): the studio backend and its
+    # dependencies live in the system interpreter, so serve in-process instead of
+    # re-execing into a ~/.unsloth/studio venv or demanding install.sh.
+    if os.environ.get("UNSLOTH_STUDIO_SYSTEM") == "1":
+        in_studio_venv = True
     studio_bin = None
     resolved_frontend = frontend
     if not in_studio_venv: