Quoting Vincent Bernat (2015-05-14 23:25:20) > ❦ 14 mai 2015 14:57 +0100, Neil Williams <codeh...@debian.org> : > >>> More seriously, but this needs some additional work, it should be >>> easier to manage persistent build dependencies. The first time you >>> build a package, it retrieves and install all deps. The second time, >>> the build environment is already here. >> >> That's a (serious) bug, not a feature. >> >> Either you want clean build environments or you are prepared to build >> in dirty ones, in which case there's little point using a container >> at all. >> >> A package cache is different, that's what pbuilder uses - that avoids >> the risk of stale packages being installed, not being updated and >> breaking the build. Either do it by uninstalling at the end of the >> build or by using a disposable container (LVM snapshot or pbuilder >> chroot). At all costs, avoid the false appeal of a dirty container >> which gets you none of the advantages and all of the problems of >> building on a developer box with no container at all. >> >> Were you thinking of a package cache or a dirty container? >> >> Any build system which allows for dependencies of a previous build to >> exist at the start of the next build is irretrievably broken and >> unfit for purpose. All you can allow to exist at the start of the >> build is build-essential. > > For some packages, installing the dependencies can take more time than > building the package. This makes use of pbuilder/cowbuilder quite > tiresome. If the whole dependencies are already here, this becomes > more enjoyable.
For that I use a cowbuilder chroot with those additional packages included. And instead of throwing it away after a day I do an "aptitude update; aptitude upgrade", just as I do for core-only chroots. ...and then I avoid using that custom chroot for builds targeted Debian, to ensure all build-dependencies are correctly declared. - Jonas -- * Jonas Smedegaard - idealist & Internet-arkitekt * Tlf.: +45 40843136 Website: http://dr.jones.dk/ [x] quote me freely [ ] ask before reusing [ ] keep private
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