From: Kyle Andrews <kyle@posteo.net>
To: 61527@debbugs.gnu.org
Subject: [bug#61527] [PATCH] Add edgelist graph backend
Date: Wed, 15 Feb 2023 05:21:35 +0000 [thread overview]
Message-ID: <875yc3sdfo.fsf@posteo.net> (raw)
[-- Attachment #1: Type: text/plain, Size: 538 bytes --]
Dear Guix,
I would like to be able to conveniently analyze Guix package
dependencies using general purpose network analysis software such as
igraph. To achieve this, I have added another backend to Guix and which
is exposed via guix graph which spits out a three column table that,
while not technically and edge list, is readily transformed into one
with minimal data munging.
Please see the attached patch file which I have created with `git diff'
from my working tree since I am not yet comfortable with more advanced
git workflows.
[-- Attachment #2: edgelist backend patch --]
[-- Type: text/plain, Size: 1150 bytes --]
diff --git a/guix/graph.scm b/guix/graph.scm
index 41219ab67d..e1760ed92a 100644
--- a/guix/graph.scm
+++ b/guix/graph.scm
@@ -255,6 +255,24 @@ (define %graphviz-backend
emit-prologue emit-epilogue
emit-node emit-edge))
+(define (emit-edgelist-prologue name port)
+ (display "" port))
+
+(define (emit-edgelist-epilogue port)
+ (display "" port))
+
+(define (emit-edgelist-node id label port)
+ (format port "package, ~a, ~a\n" label id))
+
+(define (emit-edgelist-edge id1 id2 port)
+ (format port "depends, ~a, ~a\n" id1 id2))
+
+(define %edgelist-backend
+ (graph-backend "edgelist"
+ "Generate graph in CSV edge list format"
+ emit-edgelist-prologue emit-edgelist-epilogue
+ emit-edgelist-node emit-edgelist-edge))
+
\f
;;;
;;; d3js export.
@@ -338,7 +356,8 @@ (define %cypher-backend
(define %graph-backends
(list %graphviz-backend
%d3js-backend
- %cypher-backend))
+ %cypher-backend
+ %edgelist-backend))
(define (lookup-backend name)
"Return the graph backend called NAME. Raise an error if it is not found."
next reply other threads:[~2023-02-15 5:31 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-02-15 5:21 Kyle Andrews [this message]
2023-02-15 16:32 ` [bug#61527] [PATCH] Add edgelist graph backend Simon Tournier
2023-02-16 3:28 ` Kyle Andrews
2023-02-27 22:48 ` Ludovic Courtès
2023-02-28 9:21 ` Simon Tournier
2023-03-01 3:49 ` Kyle Andrews
2023-03-01 10:34 ` Simon Tournier
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=875yc3sdfo.fsf@posteo.net \
--to=kyle@posteo.net \
--cc=61527@debbugs.gnu.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
Code repositories for project(s) associated with this external index
https://git.savannah.gnu.org/cgit/guix.git
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.