Subject: Re: [bug#28487] [PATCH] cuirass: Add gnu-system build spec.

From: Jan Nieuwenhuizen <[email-masked]>
Date: Tue, 26 Sep 2017 19:56:32 +0200

Ludovic Courtès writes:

> I like this but… while we’re at it, could we arrange to have a single
> file that works for both Hydra and Cuirass?

I like that.  It bothered me a bit to have similar files (not DRY) but
didn't see how that could be easily avoided.

> The main difference is that one returns an alist with symbols, whereas
> the other returns an alist with keywords.

That helps a lot...I kind of vaguely knew this but not well enough to see it!

> If we could instead add, say, build-aux/hydra/gnu-system-cuirass.scm,
> which simply loads gnu-system.scm and “converts” the resulting alist
> appropriately, that would be awesome.

I opted for build-aux/cuiras/gnu-cuirass.scm.

> I understand this is not quite what you were asking for ;-), but it
> would achieve the same result.

Attached is a new proposal, untested.  I will test it tomorrow, please
shoot on things that are already visibly foo.

One question: Assuming we intend to move to Cuirass and away from Hydra,
do we want to reverse the translation: have Cuirass be the untranslated
version and keep the translation to Hydra alive for as long as we need
to support Hydra?

Greetings,
janneke

>From 8f10a707b0bbf6949388d85de175ed98974a8df4 Mon Sep 17 00:00:00 2001
From: Jan Nieuwenhuizen <[email-masked]>
Date: Sat, 16 Sep 2017 12:57:37 +0200
Subject: [PATCH] cuirass: Add gnu-system build spec.

* build-aux/hydra/gnu-system.scm (hydra-jobs): Add subsets "hello"
and list of packages: ("name[@version" ...).
* build-aux/cuirass/gnu-system.scm: New file.
* doc/guix.texi (Continuous Integration): Update example spec.
---
 build-aux/cuirass/gnu-system.scm | 36 ++++++++++++++++++++++++++++++++++++
 build-aux/hydra/gnu-system.scm   | 18 ++++++++++++++++++
 doc/guix.texi                    |  4 ++--
 3 files changed, 56 insertions(+), 2 deletions(-)
 create mode 100644 build-aux/cuirass/gnu-system.scm

diff --git a/build-aux/cuirass/gnu-system.scm b/build-aux/cuirass/gnu-system.scm
new file mode 100644
index 000000000..b545323f6
--- /dev/null
+++ b/build-aux/cuirass/gnu-system.scm
@@ -0,0 +1,36 @@
+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2017 Jan Nieuwenhuizen <[email-masked]>
+;;;
+;;; This file is part of GNU Guix.
+;;;
+;;; GNU Guix is free software; you can redistribute it and/or modify it
+;;; under the terms of the GNU General Public License as published by
+;;; the Free Software Foundation; either version 3 of the License, or (at
+;;; your option) any later version.
+;;;
+;;; GNU Guix is distributed in the hope that it will be useful, but
+;;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;;; GNU General Public License for more details.
+;;;
+;;; You should have received a copy of the GNU General Public License
+;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.
+
+;;;
+;;; This file defines build jobs for the Cuirass continuation integration
+;;; tool.
+;;;
+
+(include-from-path "build-aux/hydra/gnu-system.scm")
+
+(define (cuirass-jobs store arguments)
+  "Return Cuirass jobs."
+  (pk (map hydra-job->cuirass-job (hydra-jobs store arguments))))
+
+(define (hydra-job->cuirass-job hydra-job)
+  (let ((name (car hydra-job))
+        (job ((cdr hydra-job))))
+    (cons name (lambda _ (map symbol-alist-entry->keyword-alist-entry job)))))
+
+(define (symbol-alist-entry->keyword-alist-entry entry)
+  (cons (symbol->keyword (car entry)) (cdr entry)))
diff --git a/build-aux/hydra/gnu-system.scm b/build-aux/hydra/gnu-system.scm
index 73bd566f7..9968fc3da 100644
--- a/build-aux/hydra/gnu-system.scm
+++ b/build-aux/hydra/gnu-system.scm
@@ -270,6 +270,8 @@ valid."
   (define subset
     (match (assoc-ref arguments 'subset)
       ("core" 'core)                              ; only build core packages
+      ("hello" 'hello)                            ; only build hello
+      (((? string?) (? string?) ...) 'list)       ; only build selected list of packages
       (_ 'all)))                                  ; build everything
 
   (define (cross-jobs system)
@@ -340,6 +342,22 @@ valid."
                                                  package system))
                                   %core-packages)
                              (cross-jobs system)))
+                    ((hello)
+                     ;; Build hello package only.
+                     (if (string=? system (%current-system))
+                         (let ((hello (specification->package "hello")))
+                           (list (package-job store (job-name hello) hello system)))
+                         '()))
+                    ((list)
+                     ;; Build selected list of packages only.
+                     (if (string=? system (%current-system))
+                         (let* ((names (assoc-ref arguments 'subset))
+                                (packages (map specification->package names)))
+                           (map (lambda (package)
+                                    (package-job store (job-name package)
+                                                 package system))
+                                  packages))
+                         '()))
                     (else
                      (error "unknown subset" subset))))
                 %hydra-supported-systems)))
diff --git a/doc/guix.texi b/doc/guix.texi
index fff3fbd5f..c1391ee4b 100644
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -15375,8 +15375,8 @@ packages, as prescribed in the @file{gnu-system.scm} example spec:
                             cuirass
                             "/tests/gnu-system.scm"))
 
-               (#:proc . hydra-jobs)
-               (#:arguments (subset . "hello"))
+               (#:proc . cuirass-jobs)
+               (#:arguments (subset . ("hello" "grep")))
                (#:branch . "master"))))
   (service cuirass-service-type
            (cuirass-configuration
-- 
Jan Nieuwenhuizen <[email-masked]> | GNU LilyPond http://lilypond.org
Freelance IT http://JoyofSource.com | Avatar® http://AvatarAcademy.com

-- 
Jan Nieuwenhuizen <[email-masked]> | GNU LilyPond http://lilypond.org
Freelance IT http://JoyofSource.com | Avatar® http://AvatarAcademy.com