Date: Mon, 02 Mar 2015 15:04:32 -0500 From: Alfred Perlstein <bright@mu.org> To: freebsd-current@freebsd.org Subject: Re: Massive libxo-zation that breaks everything Message-ID: <54F4C250.7090704@mu.org> In-Reply-To: <54F4BFB4.1060307@freebsd.org> References: <54F31510.7050607@hot.ee> <54F34B6E.2040809@astrodoggroup.com> <CAG=rPVfcB1Fy_8mHq-t5Ay07yrzuSGthQ0ZcGzvp0XG9gSSzkg@mail.gmail.com> <54F35F29.4000603@astrodoggroup.com> <54F36431.30506@freebsd.org> <54F42A82.1020308@freebsd.org> <B727735C-8C3C-4DFE-A017-0EC6B0152BA5@FreeBSD.org> <54F464D1.6060603@mu.org> <54F4BFB4.1060307@freebsd.org>
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On 3/2/15 2:53 PM, Julian Elischer wrote: > On 3/2/15 5:25 AM, Alfred Perlstein wrote: >> >> >> On 3/2/15 4:25 AM, David Chisnall wrote: >>> On 2 Mar 2015, at 09:16, Julian Elischer <julian@freebsd.org> wrote: >>>> if we develop a suitable post processor with pluggable grammars, we >>>> save a lot of work. >>>> given enough examples you could almost have automatically generated >>>> grammars. >>> This decoupled approach is problematic. A large part of the point >>> of libxo is to allow changing the human-readable output without >>> breaking tools that consume the output. Now I need to keep the tool >>> that consumes it and the tool that produces it in sync, so that's an >>> extra set of moving parts. When you throw jails with multiple >>> versions of world into the mix, it becomes a recipe for disaster. > why? the jail has it own /usr/share? > >>> >> +1 > > I think the risk is exactly opposite. That the human readable output > will change subtly with bugs in the xo implementation. > and people will not update the two output paths in exactly the same > way, leading bugs. I'm not going to fight on it, but I am > uncomfortable with it. So you mean that we're going to have to act like mature software devs and have regression tests (atf) and such? I welcome such a change. > You are increasing the complexity of every program you touch. And its utility as well. Worth it. -Alfred
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