2591
Comment: link https://lists.debian.org/msgid-search/20181121140542.GA31273@espresso.pseudorandom.co.uk
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2748
Add TC decision on merged-usr only
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Deletions are marked like this. | Additions are marked like this. |
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[[https://salsa.debian.org/md/usrmerge/raw/master/debian/README.Debian|usrmerge package FAQ]], another highly recommended read is https://lists.debian.org/msgid-search/20181121140542.GA31273@espresso.pseudorandom.co.uk | [[https://salsa.debian.org/md/usrmerge/raw/master/debian/README.Debian|usrmerge package FAQ]], another highly recommended read is <<mid(20181121140542.GA31273@espresso.pseudorandom.co.uk)>> |
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It does not need to be, but some other Linux distributions have done it. | In February 2021, the Technical Committee has resolved that Debian 'bookworm' should support only the merged-usr root filesystem layout, dropping support for the non-merged-usr layout. (Bug:978636) |
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* Fix the [[https://bugs.debian.org/cgi-bin/pkgreport.cgi?tag=usrmerge;users=md@linux.it|packages with conflicting files]]. | * --(Fix the [[https://bugs.debian.org/cgi-bin/pkgreport.cgi?tag=usrmerge;users=md@linux.it|packages with conflicting files]].)-- |
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* Enable merged /usr by default in the installer (Bug:839046). | * --(Enable merged /usr by default in the installer (Bug:839046).)-- |
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* [[Teams/Dpkg/MergedUsr|dpkg merged-/usr]] |
Translation(s): none
The Debian /usr Merge
This page tracks Debian support for the merged /usr directories scheme, i.e. the /{bin,sbin,lib}/ directories becoming symbolic links to /usr/{bin,sbin,lib}/.
The usrmerge package will convert the system it is installed on.
FAQ
For more information, please refer to the usrmerge package FAQ, another highly recommended read is <20181121140542.GA31273@espresso.pseudorandom.co.uk>
Is this about merging /usr/bin/ and /usr/sbin/?
No, there are no plans to do that.
Will switching to a merged /usr be mandatory?
In February 2021, the Technical Committee has resolved that Debian 'bookworm' should support only the merged-usr root filesystem layout, dropping support for the non-merged-usr layout. (978636)
TODO
Make more people test a merged /usr by installing usrmerge.
Fix the packages with conflicting files.
Merge the lintian checks for conflicting files (767754).
Push forward the policy proposal to disallow conflicting files (759492).
Add merged /usr support to the installer (810301). (But until all the conflicting files bugs are fixed, usrmerge will still need to be installed).
Enable merged /usr by default in the installer (839046).
Recommend installing usrmerge on upgrade (841666)
Resources for developers
Conflicting files
Packages which provide compatibility symlinks must manage them in the maintainer scripts.
The packages currently in the archive use code like:
# postinst if [ "$1" = 'configure' -a ! -e '/usr/bin/which' ]; then ln -s /bin/which /usr/bin/which fi
# postrm if [ "$1" = 'remove' -a -L '/usr/bin/which' ]; then rm /usr/bin/which fi
Adoption rate
Merged /usr has been the default since debootstrap 1.0.85, reverted in 1.0.87 and re-enabled in 1.0.102.
See popcon for upgrades of older systems.