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That's all we know. 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, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: guix-devel@gnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Development of GNU Guix and the GNU System distribution." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: guix-devel@gnu.org Errors-To: guix-devel-bounces+larch=yhetil.org@gnu.org Sender: "Guix-devel" X-Scanner: scn0 Authentication-Results: aspmx1.migadu.com; dkim=pass header.d=gmail.com header.s=20161025 header.b=iQEKWpKb; dmarc=pass (policy=none) header.from=gmail.com; spf=pass (aspmx1.migadu.com: domain of guix-devel-bounces@gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=guix-devel-bounces@gnu.org X-Spam-Score: -1.71 X-TUID: rjTuut+ewUH9 Dear Lars, On Wed, 22 Jul 2020 at 08:46, Lars-Dominik Braun wrote: >> pypy3 works somewhat well for me already in this regard: > indeed, you=E2=80=99re right. Well, python-package and pypy-package would not be compiled with the same VM. So the performances (optimizations) are not necessary the sames. For example, it is the same situation with emacs-package =E2=80=9Ccompiled= =E2=80=9D with emacs and run with emacs-next. Even if the bytecode is stable, there is no guarantee. > This will probably break for some packages, because python provides > Python 3.8 whereas pypy3 provides Python 3.6. (They=E2=80=99ve always la= gged > behind and given that we=E2=80=99re going towards 3.10, well=E2=80=A6) On= e example are > packages depending on importlib.resources, which only became available > with Python 3.7. Unfortunately this includes the widely-used pytest (or > rather: its dependency python-pluggy). > > Also Python=E2=80=99s C ABI is not stable[1] and thus extensions compiled= for 3.8 > can fail in unpredictable ways with 3.6. And looking at python-numpy, > it seems they won=E2=80=99t even load. > > So, does this justify creating pypy3-* packages? >From my point of view, yes. All the best, simon