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[106.167.137.155]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-22c50eb64fbsm99667675ad.158.2025.04.23.02.30.48 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 23 Apr 2025 02:30:52 -0700 (PDT) Message-ID: <5cc4d9dd-496e-4512-a683-272b1b84d98b@gmail.com> Date: Wed, 23 Apr 2025 18:30:48 +0900 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird To: andriy.shevchenko@intel.com Cc: airlied@gmail.com, corbet@lwn.net, dmitry.baryshkov@oss.qualcomm.com, dri-devel@lists.freedesktop.org, intel-gfx@lists.freedesktop.org, jani.nikula@linux.intel.com, joonas.lahtinen@linux.intel.com, linux-doc@vger.kernel.org, linux-kbuild@vger.kernel.org, linux-kernel@vger.kernel.org, maarten.lankhorst@linux.intel.com, masahiroy@kernel.org, mchehab+huawei@kernel.org, mripard@kernel.org, nathan@kernel.org, nicolas.schier@linux.dev, rodrigo.vivi@intel.com, simona@ffwll.ch, tursulin@ursulin.net, tzimmermann@suse.de References: Subject: Re: [PATCH v3 0/2] Don't create Python bytecode when building the kernel Content-Language: en-US From: Akira Yokosawa In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Hi Andy, On Tue, 22 Apr 2025 10:57:33 +0300, Andy Shevchenko wrote: > On Mon, Apr 21, 2025 at 10:35:29AM -0600, Jonathan Corbet wrote: >> Dmitry Baryshkov writes: [...] >> > Would it be possible to properly support O= and create pyc / pycache >> > inside the object/output dir? >> >> I have to confess, I've been wondering if we should be treating the .pyc >> files like we treat .o files or other intermediate products. Rather >> than trying to avoid their creation entirely, perhaps we should just be >> sure they end up in the right place and are properly cleaned up...? >> >> To answer Dmitry's question, it seems that setting PYTHONPYCACHEPREFIX >> should do the trick? > > It's not so easy. The Python is written in a way that it thinks it will never > runs object files separately from the source. Hence that variable sets only > the folder per script as _home_ for the cache. It's completely unusable. They > took it wrong. It still can be _painfully_ used, but it will make Makefiles > uglier. But, PYTHONPYCACHEPREFIX can be set as an environment variable. For example, try: export PYTHONPYCACHEPREFIX="$HOME/.cache/__pycache__" Wouldn't it be good enough for you? Regards, Akira