From owner-freebsd-python@freebsd.org Sun Jun 19 07:50:52 2016 Return-Path: Delivered-To: freebsd-python@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 69E48A7A553 for ; Sun, 19 Jun 2016 07:50:52 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mailman.ysv.freebsd.org (mailman.ysv.freebsd.org [IPv6:2001:1900:2254:206a::50:5]) by mx1.freebsd.org (Postfix) with ESMTP id 53C1C141A for ; Sun, 19 Jun 2016 07:50:52 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: by mailman.ysv.freebsd.org (Postfix) id 53025A7A552; Sun, 19 Jun 2016 07:50:52 +0000 (UTC) Delivered-To: python@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 52AC8A7A551 for ; Sun, 19 Jun 2016 07:50:52 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2001:1900:2254:206a::16:76]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 2A4A81418 for ; Sun, 19 Jun 2016 07:50:52 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from bugs.freebsd.org ([127.0.1.118]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id u5J7opnd026344 for ; Sun, 19 Jun 2016 07:50:52 GMT (envelope-from bugzilla-noreply@freebsd.org) From: bugzilla-noreply@freebsd.org To: python@FreeBSD.org Subject: [Bug 209551] Python bits ignore DEFAULT_VERSIONS Date: Sun, 19 Jun 2016 07:50:51 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Ports & Packages X-Bugzilla-Component: Ports Framework X-Bugzilla-Version: Latest X-Bugzilla-Keywords: patch X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: koobs@FreeBSD.org X-Bugzilla-Status: Open X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: python@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: freebsd-python@freebsd.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: FreeBSD-specific Python issues List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 19 Jun 2016 07:50:52 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D209551 --- Comment #5 from Kubilay Kocak --- @Mikhail, can you please provide a few example cases that show: - The port that is affected - The intended/expected result - The actual result - The result with any workarounds claimed to fix the issue (if there are an= y) Currently, and as far as I know/believe, the existing logic is intended as there are cases where the user-specified DEFAULT_VERSION of python desired,= may *not* be appropriate/correct for the port in question, based on the version= s of Python that port is declared to support (whether those declared are correct= or not). This is further complicated in dependency cases where some ports depe= nd on only one or more Python versions. A shorter way of saying the above is that the user literally cannot know, be expected to know, nor state the exact and only version of Python they want = to be used in any particular case. Obvious examples are:=20 - User specifies default version 3.x, port only supports 2.x - User specifies default version 2.x, port only supports 3.x - User specifies default version x.y, port explicitly does not work with x.y (say, for example, older 3.x versions) Having said that, there *are* ports in the tree right now that incorrectly, incompletely or inaccurately declare those versions. These all need to be fixed, with the documentation (at least in Uses/python) improved to make it clearer how to do it, and do it correctly. Examples are: Ports that specify USES=3Dpython:2 (or 3). This declaration means *only* th= at the port depends on the python2 or python3 *symlink* (and thus port). These sho= uld instead be USES=3Dpython:X.Y[+] or [-]X.Y, with an additional *_DEPENDS on = the respective lang/python{2,3} symlink port. Ports that specify X.Y+ arbitrarily, as almost all Python packages support = only up to the latest Python X.Y, and often break with future/newer ones until t= hey are tested/verified. Additionally, our USES syntax is unable to specify SOME version specificati= ons that are perfectly normal (and common) for Python packages. There is an open task documented here: https://wiki.freebsd.org/Python#Goals --=20 You are receiving this mail because: You are the assignee for the bug.=