[bug#43477] [PATCH 0/1] guix: graph: Add 'plain' backend.

[zimoun]

Dear,

I am always annoyed when I use "guix graph" because most of the time I run:

  guix graph htop | grep label

or something along these lines.  Instead, the patch avoids the grep part:

--8<---------------cut here---------------start------------->8---
$ ./pre-inst-env guix graph -b plain htop
htop@3.0.2
autoconf@2.69
perl@5.30.2
m4@1.4.18
automake@1.16.2
autoconf-wrapper@2.69
guile@2.0.14
pkg-config@0.29.2
libffi@3.3
bash-minimal@5.0.16
libunistring@0.9.10
libltdl@2.4.6
libgc@8.0.4
gmp@6.2.0
bash@5.0.16
readline@8.0.4
ncurses@6.2
--8<---------------cut here---------------end--------------->8---


It is then easier to pipe with other Guix commands, for example:

--8<---------------cut here---------------start------------->8---
$ guix build $(./pre-inst-env guix graph -b plain htop | grep bash)
substitute: updating substitutes from 'https://ci.guix.gnu.org'... 100.0%
0.9 MB will be downloaded:
   /gnu/store/m4qpxmn9v0jrylgbkzwssh5avzwhqil6-bash-minimal-5.0.16-doc
   /gnu/store/fvhj74pghapbjvsvj27skvkra1by1965-bash-minimal-5.0.16
substituting 
/gnu/store/m4qpxmn9v0jrylgbkzwssh5avzwhqil6-bash-minimal-5.0.16-doc...
downloading from 
https://ci.guix.gnu.org/nar/lzip/m4qpxmn9v0jrylgbkzwssh5avzwhqil6-bash-minimal-5.0.16-doc
 ...
 bash-minimal-5.0.16-doc  290KiB     444KiB/s 00:01 [##################] 100.0%

/gnu/store/vk4r0x7baig8jnmsqrgrqpyq8qxr4gm3-bash-5.0.16-doc
/gnu/store/v1xc4405s7xilmwhhkdj8z55wa2wlr8y-bash-5.0.16-include
/gnu/store/87kif0bpf0anwbsaw0jvg8fyciw4sz67-bash-5.0.16
/gnu/store/m4qpxmn9v0jrylgbkzwssh5avzwhqil6-bash-minimal-5.0.16-doc
/gnu/store/fvhj74pghapbjvsvj27skvkra1by1965-bash-minimal-5.0.16
--8<---------------cut here---------------end--------------->8---


Note that the manual is not updated since, since I do not know how to extend
the relevant section.   Note also that "tests/guix-graph.sh" does not test any
of the backends.


All the best,
simon

zimoun (1):
  guix: graph: Add 'plain' backend.

 guix/graph.scm | 26 +++++++++++++++++++++++++-
 1 file changed, 25 insertions(+), 1 deletion(-)


base-commit: 8d557d4167ea98dfbc200fd20f64b8da36da35a2
-- 
2.28.0