From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from lists.gentoo.org (pigeon.gentoo.org [208.92.234.80]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by finch.gentoo.org (Postfix) with ESMTPS id B5D4A158086 for ; Tue, 9 Nov 2021 01:42:12 +0000 (UTC) Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id 67E752BC067; Tue, 9 Nov 2021 01:42:06 +0000 (UTC) Received: from smtp.gentoo.org (woodpecker.gentoo.org [140.211.166.183]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by pigeon.gentoo.org (Postfix) with ESMTPS id D621D2BC063 for ; Tue, 9 Nov 2021 01:42:04 +0000 (UTC) From: Sam James Content-Type: multipart/signed; boundary="Apple-Mail=_60C46097-D5A9-4785-B087-6B4E16A5E880"; protocol="application/pgp-signature"; micalg=pgp-sha512 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-dev@lists.gentoo.org Reply-to: gentoo-dev@lists.gentoo.org X-Auto-Response-Suppress: DR, RN, NRN, OOF, AutoReply Mime-Version: 1.0 (Mac OS X Mail 15.0 \(3693.20.0.1.32\)) Subject: Re: [gentoo-dev] [RFC] Un-slotting LLVM Date: Tue, 9 Nov 2021 01:41:53 +0000 References: <178b84fb73ee4e5dfea09b123b568a38f3f67f26.camel@gentoo.org> To: gentoo-dev@lists.gentoo.org In-Reply-To: <178b84fb73ee4e5dfea09b123b568a38f3f67f26.camel@gentoo.org> Message-Id: X-Mailer: Apple Mail (2.3693.20.0.1.32) X-Archives-Salt: 1653730b-91b7-4cdb-80c3-5bfecd3350a7 X-Archives-Hash: 60eb364c162c41a32850b76e5d18fa47 --Apple-Mail=_60C46097-D5A9-4785-B087-6B4E16A5E880 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=utf-8 > On 8 Nov 2021, at 11:18, Micha=C5=82 G=C3=B3rny = wrote: > Hi, > A few years back I've slotted LLVM and Clang to make the life with > revdeps easier. Long story short, every major LLVM release (which > happens twice a year) breaks API and it takes some time for revdeps to > adjust. Slotting made it possible to install multiple versions > simultaneously, and therefore let "faster" packages use newer LLVM > without being blocked by "slower" packages on the user's system. >=20 > Unfortunately, this ended up pretty bothersome to maintain. Besides > making ebuilds quite complex (and prone to mistakes), I'm hearing more > and more reports of programs being broken through getting multiple = LLVM > versions in the link chain. I think this might just be Blender and friends which are especially = fragile. We may be able to get away with just coordinating those together. > WDYT? If we can help it, I'd really really prefer we don't. Being able to test various different various of Clang quickly (just like gcc) is really = helpful. (especially given one day, we might dare to dream of using Clang for the system toolchain. It becomes a lot easier to check for regressions if you can just flip the version.) Best, sam --Apple-Mail=_60C46097-D5A9-4785-B087-6B4E16A5E880 Content-Transfer-Encoding: 7bit Content-Disposition: attachment; filename=signature.asc Content-Type: application/pgp-signature; name=signature.asc Content-Description: Message signed with OpenPGP -----BEGIN PGP SIGNATURE----- iQGTBAEBCgB9FiEEYOpPv/uDUzOcqtTy9JIoEO6gSDsFAmGJ0eJfFIAAAAAALgAo aXNzdWVyLWZwckBub3RhdGlvbnMub3BlbnBncC5maWZ0aGhvcnNlbWFuLm5ldDYw RUE0RkJGRkI4MzUzMzM5Q0FBRDRGMkY0OTIyODEwRUVBMDQ4M0IACgkQ9JIoEO6g SDuhpgf+K87CBpY89YXI1Ia3+5g5LnpPk3Z4TeFVINoxUCKc0e38JXHI4ACg6gr5 C0bnPXTkbEoQHQtA8cpriUbRFo+IwbvTjW6hms+zc+l8bCuzpRLvyCTuPVnreWEW zHWt4Lu2ogw8KnvVr33oC11ImFvjdWpfg9pSUvyyeWiBnUEDZviVLl7fib9lU2ae 3jxbLMLAFCBXR22HJjCF1MJsldh9IZecyscs0pdwDUkxX/5diw1YOQJgsu6QNSE2 zVO18UXs8p0nN7ZtIPYRg9vPWw/AfwKD7cnITZsEvOp6V3ZFPcqRvi+swLvFcTY1 zSpeE8sVBOakWNlCk4DJipwitQciFA== =cOoD -----END PGP SIGNATURE----- --Apple-Mail=_60C46097-D5A9-4785-B087-6B4E16A5E880--