Re: User-installable Debian packages?
- Date: Sun, 23 Jul 2017 10:44:32 +0200
- From: Johannes Schauer <josch@xxxxxxxxxx>
- Subject: Re: User-installable Debian packages?
Quoting Paul Wise (2017-07-22 13:34:46) > I would wager most Debian packages are not bit-for-bit identical when you > vary the installation prefix (and Debian build tools don't support doing that > AFAICT), but you can almost fake user-installable packages using existing > binary packages using something like this (sorry about the wrapping). If we > were all using Hurd then a few extra overlay mount points would be enough of > course. > > ==> .bash.d/software <== > export PATH=$PATH:~/software/usr/bin:~/software/bin > export LD_LIBRARY_PATH=~/software/usr/lib:~/software/usr/lib/x86_64-linux-gnu:~/software/lib:~/software/lib/x86_64-linux-gnu > export PERL5LIB=~/software/usr/share/perl5 > export PYTHONPATH=~/software/usr/lib/python2.7/dist-packages > > ==> software/update <== > #!/bin/sh > rm -rf usr apt/archives/*.deb > rsync --delete --archive --exclude archives /var/cache/apt/ apt/ > rsync --delete --archive --exclude lock --exclude Lock /var/lib/dpkg/ dpkg/ > apt-get -o 'Dir::Cache=/home/pabs/software/apt' -o > 'Dir::State::status=/home/pabs/software/dpkg/status' --download-only > install foo > for f in apt/archives/*.deb ; do > dpkg -x $f . > done as far as *installing* (not running) Debian packages under a user-writable path without superuser privileges goes, there is $DPKG_ROOT which is an attempt at making this process less hacky than using dpkg -x. Instead of just extracting the packages somewhere, you *install* them into a non-root path by using the dpkg options: --admindir=$(DPKG_ADMINDIR) --instdir="$(DPKG_INSTDIR)" --force-script-chrootless --force-not-root There are still a couple of remaining problems. For example maintainer scripts still mostly assume that the package is installed in root. For that, dpkg exports the environment variable $DPKG_ROOT which the maintainer script can use to find out where the package is being installed to. Another non-simple blocker is dpkg-maintscript-helper, also known as #832176. Another are maintainer script dependencies which have to be met by the host system. You can find out more about this topic here: https://wiki.debian.org/Teams/Dpkg/Spec/InstallBootstrap But this is only about the *installation* without root part. This is not about also being able to run anything that was installed into a non-root path. Thanks! cheers, josch
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