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-*- mode: org; coding: utf-8; -*-

#+TITLE: Hacking GNU Guix and Its Incredible Distro

Copyright © 2012, 2013, 2014, 2016, 2017 Ludovic Courtès <ludo@gnu.org>
Copyright © 2015, 2017 Mathieu Lirzin <mthl@gnu.org>
Copyright © 2017 Leo Famulari <leo@famulari.name>
Copyright © 2017 Arun Isaac <arunisaac@systemreboot.net>

  Copying and distribution of this file, with or without modification,
  are permitted in any medium without royalty provided the copyright
  notice and this notice are preserved.

* Contributing

See the manual for useful hacking informations, either by running

  info -f doc/guix.info "Contributing"

or by checking the [[http://www.gnu.org/software/guix/manual/guix.html#Contributing][web copy of the manual]].

* Commit Access

For frequent contributors, having write access to the repository is
convenient.  When you deem it necessary, feel free to ask for it on the
mailing list.  When you get commit access, please make sure to follow the
policy below (discussions of the policy can take place on guix-devel@gnu.org.)

Non-trivial patches should always be posted to guix-patches@gnu.org (trivial
patches include fixing typos, etc.).  This mailing list fills the
patch-tracking database at [[https://bugs.gnu.org/guix-patches]]; see
"Contributing" in the manual for details.

For patches that just add a new package, and a simple one, it’s OK to commit,
if you’re confident (which means you successfully built it in a chroot setup,
and have done a reasonable copyright and license auditing.)  Likewise for
package upgrades, except upgrades that trigger a lot of rebuilds (for example,
upgrading GnuTLS or GLib.)  We have a mailing list for commit notifications
(guix-commits@gnu.org), so people can notice.  Before pushing your changes,
make sure to run ‘git pull --rebase’.

All commits that are pushed to the central repository on Savannah must be
signed with an OpenPGP key, and the public key should be uploaded to your user
account on Savannah and to public key servers, such as ‘pgp.mit.edu’.  To
configure Git to automatically sign commits, run:

  git config commit.gpgsign true
  git config user.signingkey CABBA6EA1DC0FF33

You can prevent yourself from accidentally pushing unsigned commits to
Savannah by using the pre-push Git hook called located at ‘etc/git/pre-push’:

  cp etc/git/pre-push .git/hooks/pre-push

When pushing a commit on behalf of somebody else, please add a Signed-off-by
line at the end of the commit log message (e.g. with ‘git am --signoff’).
This improves tracking of who did what.

For anything else, please post to guix-patches@gnu.org and leave time for a
review, without committing anything.  If you didn’t receive any reply
after two weeks, and if you’re confident, it’s OK to commit.

That last part is subject to being adjusted, allowing individuals to commit
directly on non-controversial changes on parts they’re familiar with.

* Using emacs-debbugs

Bug reports and patches are tracked using debbugs. If you are on emacs, you
can use emacs-debbugs.

List all open bug reports on guix-patches with

C-u M-x debbugs-gnu <RET> <RET> guix-patches <RET> n y
0'>2020-08-16system: Modify GDB skeleton to find debug files for any profile....Instead of hard coding the debug directory to that of the user profile, use Guile scripting in combination with a new search path specification on GDB to specify the debug file directories. * gnu/packages/gdb.scm (gdb-9.1): Add a search path specification for the GDB_DEBUG_FILE_DIRECTORY environment variable. * gnu/system/shadow.scm (default-skeletons)[gdbinit]: Derive the value of DEBUG-FILE-DIRECTORY via the GDB_DEBUG_FILE_DIRECTORY environment variable. * doc/guix.texi (Installing Debugging Files): Document it. Maxim Cournoyer 2020-05-08services: Add descriptions....* gnu/services/dbus.scm (polkit-service-type)[description]: New field. * gnu/services/dict.scm (dicod-service-type)[description]: New field. * gnu/services/dns.scm (knot-service-type)[description]: New field. * gnu/services/networking.scm (dhcpd-service-type)[description]: New field. * gnu/services/shepherd.scm (shepherd-root-service-type)[description]: New field. * gnu/services/xorg.scm (slim-service-type)[description]: New field. (screen-locker-service-type)[description]: New field. * gnu/system/pam.scm (pam-root-service-type)[description]: New field. * gnu/system/shadow.scm (account-service-type)[description]: New field. Ludovic Courtès 2020-04-17services: account: Have 'user-processes' depend on 'user-homes'....Until now, 'user-homes' happened to start right after 'user-processes' and before services that depend on a home directory but the dependency was not explicit. This addresses it. * gnu/system/shadow.scm (account-service-type): Extend USER-PROCESSES-SERVICE-TYPE. Ludovic Courtès 2020-04-01system: Move nanorc to XDG_CONFIG_HOME....* gnu/system/shadow.scm (skeleton-directory): Move .nanorc to .config/nano/nanorc. Efraim Flashner 2020-03-30Revert "system: Move nanorc to XDG_CONFIG_HOME."...This reverts commit bd71818df31364bbd04f3f13b3bbb251636748b4. This changed caused system reconfiguration to fail like this: ------ building /gnu/store/y1x8asbzw624ywgkpin35p1i4bqnyfy2-skel.drv... Backtrace: 4 (primitive-load "/gnu/store/2x7d0jsbgf2ndb5fsk0nj07rhsx?") In ice-9/eval.scm: 619:8 3 (_ #f) In ice-9/boot-9.scm: 260:13 2 (for-each #<procedure 7ffff6ad8100 at ice-9/eval.scm:3?> ?) In guix/build/utils.scm: 343:27 1 (_ "/gnu/store/ajrgkj1s9vdcq00drn703f4zj9dvfrsv-nanorc" ?) In unknown file: 0 (copy-file "/gnu/store/ajrgkj1s9vdcq00drn703f4zj9dvfrs?" ?) ERROR: In procedure copy-file: In procedure copy-file: No such file or directory `/gnu/store/v1grsca743phw41lyf63dzmh9nz5jlpn-bash_profile' -> `.bash_profile' `/gnu/store/xdsaw0mj6axj427hyi6ysrnsxi21n7d5-bashrc' -> `.bashrc' `/gnu/store/6i0b236dyar78zc5k5hrj5dv3vr4zb9w-zprofile' -> `.zprofile' `/gnu/store/ajrgkj1s9vdcq00drn703f4zj9dvfrsv-nanorc' -> `.config/nano/nanorc' builder for `/gnu/store/y1x8asbzw624ywgkpin35p1i4bqnyfy2-skel.drv' failed with exit code 1 ------ Leo Famulari 2020-03-30system: Move nanorc to XDG_CONFIG_HOME....* gnu/system/shadow.scm (default-skeletons): Move .nanorc to .config/nano/nanorc. Efraim Flashner 2020-03-19gnu: system: Remove guile-wm from skeleton....* gnu/system/shadow.scm (default-skeletons): Remove guile-wm (especially as a dependency). Jan Nieuwenhuizen