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a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1756758452; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=mW0ivbCeARcW77uG+hGeVTu54bG1KQkuvpiyp/K2kcE=; b=a/wwA1cyYtRNfQMDprrTSQjmkvUcbEI43o7q4AdqTREKkEZDlRQJCQH80cYXggSvDbUDlU 4GWpSpJ5CKlayJwNw/21UJq1rTXvyF0w+nz6UZ2BPm4VRt8z4TdrFAfob/a+xe0lq3naf3 4Yk/Uvi8/w1x+nXWTvjy/qd0PN/lNHk= X-MC-Unique: cH7OfPcEMbexJQsNkRTUEg-1 X-Mimecast-MFC-AGG-ID: cH7OfPcEMbexJQsNkRTUEg_1756758450 From: John Snow To: qemu-devel@nongnu.org Cc: Hanna Reitz , Cleber Rosa , John Snow , qemu-block@nongnu.org, =?UTF-8?q?Daniel=20Berrang=C3=A9?= , Kevin Wolf Subject: [PATCH 10/19] python: backport 'qmp-tui: Do not crash if optional dependencies are not met' Date: Mon, 1 Sep 2025 16:26:52 -0400 Message-ID: <20250901202702.2971212-11-jsnow@redhat.com> In-Reply-To: <20250901202702.2971212-1-jsnow@redhat.com> References: <20250901202702.2971212-1-jsnow@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.0 on 10.30.177.12 Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=170.10.133.124; envelope-from=jsnow@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1756758690797116600 Content-Type: text/plain; charset="utf-8" Based on the discussion at https://github.com/pypa/pip/issues/9726 - even though the setuptools documentation implies that it is possible to guard script execution with optional dependency groups, this is not true in practice with the scripts generated by pip. Just do the simple thing and guard the import statements. Signed-off-by: John Snow cherry picked from commit df520dcacf9a75dd4c82ab1129768de4128b554c Signed-off-by: John Snow --- python/qemu/qmp/qmp_tui.py | 19 +++++++++++++++---- 1 file changed, 15 insertions(+), 4 deletions(-) diff --git a/python/qemu/qmp/qmp_tui.py b/python/qemu/qmp/qmp_tui.py index 562be008d5e..53ea6c59a71 100644 --- a/python/qemu/qmp/qmp_tui.py +++ b/python/qemu/qmp/qmp_tui.py @@ -21,6 +21,7 @@ import logging from logging import Handler, LogRecord import signal +import sys from typing import ( List, Optional, @@ -30,10 +31,20 @@ cast, ) =20 -from pygments import lexers -from pygments import token as Token -import urwid -import urwid_readline + +try: + from pygments import lexers + from pygments import token as Token + import urwid + import urwid_readline +except ModuleNotFoundError as exc: + print( + f"Module '{exc.name}' not found.", + "You need the optional 'tui' group: pip install qemu.qmp[tui]", + sep=3D'\n', + file=3Dsys.stderr, + ) + sys.exit(1) =20 from .error import ProtocolError from .legacy import QEMUMonitorProtocol, QMPBadPortError --=20 2.50.1