On Mon, May 12, 2014 at 09:03:50PM +0200, David Kalnischkies wrote: > Version: 0.9.7.2 > Control: notfound -1 1.0.3 > > Hi,
Hi, > On Tue, May 06, 2014 at 11:22:00PM +0200, Aurelien Jarno wrote: > > Could you please therefore add support for cross-architecture conflicts? > > This is already supported – even in apt/wheezy – so I wonder how you > come to the conclusion that it is ignored. It is commit cef094c2ec8 > if you want to have a look and/or don't trust me, but until further > notice I will close the bug as resolved because of this. > > If you can demonstrate that it doesn't work I am all ears of course. I did some tests, but after your answer I was not fully sure of them. Now it seems we have everything in the archive for a demo (done on an amd64 system). | # apt-get --version | apt 1.0.3 for amd64 compiled on May 5 2014 16:31:07 | Supported modules: | *Ver: Standard .deb | *Pkg: Debian dpkg interface (Priority 30) | Pkg: Debian APT solver interface (Priority -1000) | S.L: 'deb' Standard Debian binary tree | S.L: 'deb-src' Standard Debian source tree | Idx: Debian Source Index | Idx: Debian Package Index | Idx: Debian Translation Index | Idx: Debian dpkg status file | Idx: EDSP scenario file | # dpkg --add-architecture powerpc | # dpkg --add-architecture mips | # apt-get update [ snip ] | # apt-cache show libc6:mips | Package: libc6 | Source: eglibc | Version: 2.18-6 | Installed-Size: 9430 | Maintainer: GNU Libc Maintainers <debian-gl...@lists.debian.org> | Architecture: mips | Provides: glibc-2.18-1 | Depends: libgcc1 | Suggests: glibc-doc, debconf | debconf-2.0, locales | Conflicts: libc6:hppa, libc6:m68k, libc6:mipsel, libc6:powerpc, libc6:s390, prelink (<= 0.0.20090311-1), tzdata (<< 2007k-1), tzdata-etch | Breaks: hurd (<< 1:0.5.git20140203-1), locales (<< 2.18), locales-all (<< 2.18), nscd (<< 2.18) [ snip ] | # apt-cache show libc6:powerpc | Package: libc6 | Source: eglibc | Version: 2.18-6 | Installed-Size: 9536 | Maintainer: GNU Libc Maintainers <debian-gl...@lists.debian.org> | Architecture: powerpc | Replaces: libc6-powerpc | Provides: glibc-2.18-1 | Depends: libgcc1 | Suggests: glibc-doc, debconf | debconf-2.0, locales | Conflicts: libc6:hppa, libc6:m68k, libc6:mips, libc6:mipsel, libc6:s390, prelink (<= 0.0.20090311-1), tzdata (<< 2007k-1), tzdata-etch | Breaks: hurd (<< 1:0.5.git20140203-1), locales (<< 2.18), locales-all (<< 2.18), nscd (<< 2.18) [ snip ] | # apt-get install libc6:mips libc6:powerpc | Reading package lists... Done | Building dependency tree | Reading state information... Done | The following extra packages will be installed: | libgcc1:mips libgcc1:powerpc | Suggested packages: | glibc-doc:powerpc glibc-doc:mips | The following NEW packages will be installed: | libc6:powerpc libc6:mips libgcc1:mips libgcc1:powerpc | 0 upgraded, 4 newly installed, 0 to remove and 0 not upgraded. | Need to get 0 B/9012 kB of archives. | After this operation, 19.8 MB of additional disk space will be used. | Do you want to continue? [Y/n] | Preconfiguring packages ... | Selecting previously unselected package libc6:mips. | (Reading database ... 162272 files and directories currently installed.) | Preparing to unpack .../archives/libc6_2.18-6_mips.deb ... | Unpacking libc6:mips (2.18-6) ... | Selecting previously unselected package libgcc1:mips. | Preparing to unpack .../libgcc1_1%3a4.9.0-3_mips.deb ... | Unpacking libgcc1:mips (1:4.9.0-3) ... | Selecting previously unselected package libc6:powerpc. | Preparing to unpack .../libc6_2.18-6_powerpc.deb ... | Unpacking libc6:powerpc (2.18-6) ... | dpkg: error processing archive /var/cache/apt/archives/libc6_2.18-6_powerpc.deb (--unpack): | trying to overwrite shared '/lib/ld.so.1', which is different from other instances of package libc6:powerpc | Selecting previously unselected package libgcc1:powerpc. | Preparing to unpack .../libgcc1_1%3a4.9.0-3_powerpc.deb ... | Unpacking libgcc1:powerpc (1:4.9.0-3) ... | Errors were encountered while processing: | /var/cache/apt/archives/libc6_2.18-6_powerpc.deb | E: Sub-process /usr/bin/dpkg returned an error code (1) | # Of course it also shows that dpkg also do not support it, but having apt catching that case would already catches most of the problems. > !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! > !!!!!!!!!!!!!!!!!!!!!!!!!!!!!! BEWARE !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! > !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! > > Just that APT is supporting it doesn't make it magically supported by > everyone or even provides even the slightest hint that anyone will > try to support it, too (MultiArch itself being the best example). > > So I have no idea at the moment what the status quo is in all the other > software dealing with dependencies! Attached is a small apt testcase with > which I have checked that dpkg supports it, but I have only run it on sid. > (if you want to run it yourself, build apt and run the script in > /path/to/apt-source-tree/test/integration/ ) > Not even the slightest idea what lintian/dak/buildds/… will make of it. > > > Note also that to the best of my knowledge this is documented/specified > nowhere. The MultiArchSpec [1] mentions it only as future work area. > APT supports it mainly because it was ridiculously easy to do it as the > heavy lifting is actually needed to support the non-specific conflicts. > (I am reasonably sure I had support for it in 2010 already, but broke it > while refactoring and just reintroduced it in 2012 with a test) Indeed. On the other hand while I understand cross-(Build-)Depends are not something easy to implement for all software, I don't think how we can reasonably support multiarch without cross-Conflicts. We tried with Wheezy, and users have shown it doesn't work. -- Aurelien Jarno GPG: 4096R/1DDD8C9B aurel...@aurel32.net http://www.aurel32.net -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
