From 030f1367f055720034cb178e50fd5d4c6ff371b1 Mon Sep 17 00:00:00 2001
From: Ludovic Courtès <ludo@gnu.org>
Date: Wed, 5 Sep 2018 10:35:43 +0200
Subject: channels: Add 'latest-channel-derivation' convenience procedure.

* guix/channels.scm (latest-channel-derivations): Remove.
(latest-channel-instances*, latest-channel-derivation): New procedures.
---
 guix/channels.scm | 21 ++++++++++++---------
 1 file changed, 12 insertions(+), 9 deletions(-)

diff --git a/guix/channels.scm b/guix/channels.scm
index ec3e05eaf5..794383fe22 100644
--- a/guix/channels.scm
+++ b/guix/channels.scm
@@ -48,7 +48,7 @@
 
             latest-channel-instances
             channel-instance-derivations
-            latest-channel-derivations
+            latest-channel-derivation
             channel-instances->manifest))
 
 ;;; Commentary:
@@ -216,14 +216,6 @@ INSTANCES."
                                         (list core))))
           instances)))
 
-(define latest-channel-derivations
-  (let ((latest-channel-instances (store-lift latest-channel-instances)))
-    (lambda (channels)
-      "Return, as a monadic value, the list of derivations for the latest
-instances of CHANNELS."
-      (mlet %store-monad ((instances (latest-channel-instances channels)))
-        (channel-instance-derivations instances)))))
-
 (define (whole-package-for-legacy name modules)
   "Return a full-blown Guix package for MODULES, a derivation that builds Guix
 modules in the old ~/.config/guix/latest style."
@@ -290,3 +282,14 @@ channel instances."
                        (entries     (mapm %store-monad instance->entry
                                           (zip instances derivations))))
     (return (manifest entries))))
+
+(define latest-channel-instances*
+  (store-lift latest-channel-instances))
+
+(define* (latest-channel-derivation #:optional (channels %default-channels))
+  "Return as a monadic value the derivation that builds the profile for the
+latest instances of CHANNELS."
+  (mlet* %store-monad ((instances ((store-lift latest-channel-instances)
+                                   channels))
+                       (manifest  (channel-instances->manifest instances)))
+    (profile-derivation manifest)))
-- 
cgit v1.2.3

v class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/HACKING?id=822e2173edc689a797355d9a16085d6e21bbed69&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2020-01-09 23:33:04 +0100'>2020-01-09</span></td><td><a href='/guix/commit/HACKING?id=2d315cd428484537e763d7f7c676dc5fff7995f6'>doc: Move "Commit Access" section from 'HACKING' to the manual.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2020-01-09 23:33:04 +0100'>2020-01-09</span></td><td><a href='/guix/commit/HACKING?id=a7bde77d247ed0765f5378779d67b4668c5d7648'>doc: Add "Tracking Bugs and Patches" section.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2019-07-13 14:25:19 -0400'>2019-07-13</span></td><td><a href='/guix/commit/HACKING?id=06e1ecbf17fee7fe513ad2808d8175fb3565ae3e'>doc: Update keyserver URL.</a><span class='msg-avail'>...</span></td><td>Leo Famulari</td></tr>
<tr><td><span title='2019-02-11 23:23:27 +0100'>2019-02-11</span></td><td><a href='/guix/commit/HACKING?id=6701edbfad62ba9572ffd35497df3db27b208ba5'>HACKING: Update key server.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2018-07-22 17:00:47 +0200'>2018-07-22</span></td><td><a href='/guix/commit/HACKING?id=5285192150c83db12136af6a123e03bb9b9dbe5f'>doc: Fix typo (missing period)</a><span class='msg-avail'>...</span></td><td>Pierre Neidhardt</td></tr>
<tr><td><span title='2017-08-19 13:42:52 +0530'>2017-08-19</span></td><td><a href='/guix/commit/HACKING?id=acabbd597678e1f0be995297bb009b6dd38ae795'>doc: Mention how to use emacs-debbugs.</a><span class='msg-avail'>...</span></td><td>Arun Isaac</td></tr>
<tr><td><span title='2017-03-27 00:13:18 +0200'>2017-03-27</span></td><td><a href='/guix/commit/HACKING?id=2fccc0d193497eb2ee3127270dea12be103f1bc2'>maint: Give command to install the pre-push hook.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2017-03-24 13:56:38 +0100'>2017-03-24</span></td><td><a href='/guix/commit/HACKING?id=ee7c21c7044355fc4c6bbe0906f061f6fbdfb79e'>maint: Mention the Signed-off-by line in 'HACKING'.</a><span class='msg-avail'>...</span></td><td>Clément Lassieur</td></tr>
<tr><td><span title='2017-03-15 15:19:53 +0100'>2017-03-15</span></td><td><a href='/guix/commit/HACKING?id=bc551cf32b6ccb3f8dd60b1d0d4e3c3e88cb1f8d'>maint: Mention guix-patches@gnu.org in 'HACKING'.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2017-01-30 13:20:13 +0100'>2017-01-30</span></td><td><a href='/guix/commit/HACKING?id=8efc35a8902910ef7c09183c1d79d51498b2c10c'>maint: Fix invalid calls to 'info'.</a><span class='msg-avail'>...</span></td><td>Mathieu Lirzin</td></tr>
<tr><td><span title='2017-01-04 16:27:20 -0500'>2017-01-04</span></td><td><a href='/guix/commit/HACKING?id=69355e1283d300a663fb639ec426f10f3feb404b'>doc: Add a Git hook that verifies signatures before pushing.</a><span class='msg-avail'>...</span></td><td>Leo Famulari</td></tr>
<tr><td><span title='2016-07-24 19:54:15 +0200'>2016-07-24</span></td><td><a href='/guix/commit/HACKING?id=20e29643449adbb9658c0d3bec9c8b117697fe41'>doc: Explain how to set up Git for signing.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2016-07-14 15:37:51 -0400'>2016-07-14</span></td><td><a href='/guix/commit/HACKING?id=a16db014d10659051037eb76a0424b46e94f2f2d'>doc: Mention commit signatures in HACKING.</a><span class='msg-avail'>...</span></td><td>Leo Famulari</td></tr>