GNU bug report logs - #37478
[PATCH] Support canonical guix environment -l guix.scm.

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Package: guix-patches; Reported by: Jan Nieuwenhuizen <janneke@HIDDEN>; Keywords: patch; dated Sun, 22 Sep 2019 11:10:02 UTC; Maintainer for guix-patches is guix-patches@HIDDEN.

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From: Jan Nieuwenhuizen <janneke@HIDDEN>
To: Ludovic =?utf-8?Q?Court=C3=A8s?= <ludo@HIDDEN>
Subject: Re: [bug#37478] [PATCH] Support canonical guix environment -l
 guix.scm.
References: <871rw88u5s.fsf@HIDDEN> <871rw4mro9.fsf@HIDDEN>
Date: Sat, 05 Oct 2019 11:25:06 +0200
In-Reply-To: <871rw4mro9.fsf@HIDDEN> ("Ludovic
 \=\?utf-8\?Q\?Court\=C3\=A8s\=22'\?\=
 \=\?utf-8\?Q\?s\?\= message of "Wed, 25 Sep 2019 15:28:06 +0200")
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Ludovic Court=C3=A8s writes:

>> I often find myself typing `guix environment -l guix.scm' in the Guix
>> source root and thought IWBN no make that "just work".  WYDT?
>
> IWBN, but=E2=80=A6
>
>> -(define-module (guix))
>> +(define-module (guix)
>> +  #:use-module (guix git-download)
>> +  #:use-module (guix gexp)
>> +  #:use-module (guix packages)
>> +  #:use-module (gnu packages package-management))
>
> =E2=80=A6 the (guix) module is a public module, and it must not depend on
> anything but the (guix =E2=80=A6) modules it imports.
>
> So unfortunately we can=E2=80=99t just do that.

Hmm, and is there a difference between compile-time and run-time?  I do
not understand the rules well enough here...

So I guess that something vaguely this (I really don't like the
command-line "parsing" bit, just a thought experiment)

--8<---------------cut here---------------start------------->8---
;; Naive command-line parser: are we running from Guix source tree
;;    guix build -f guix.scm
;;    guix environment -l guix.scm
;; then return guix@git package
(when (and (file-exists? "guix/gexp.scm")
           (let ((len (length (command-line))))
             (and (> len 3)
                  (let ((tail (list-tail (command-line) (- len 3))))
                    (or (equal? tail '("build" "-f" "guix.scm"))
                        (equal? tail '("environment" "-l" "guix.scm")))))))
  (let ((source-dir (dirname (current-filename))))
    ((@ (guix packages) package)
     (inherit (@ (gnu packages package-management) guix))
     (version "git")
     (source ((@ (guix gexp) local-file) source-dir
              #:recursive? #t
              #:select? ((@ (guix git-download) git-predicate) source-dir))=
))))
--8<---------------cut here---------------end--------------->8---

is also not possible?  It is also starts to look like a kludge and hard
to get right...bah :)

> Perhaps we could have a =E2=80=98.guix.scm=E2=80=99 file though, or
> =E2=80=98build-aux/guix.scm=E2=80=99, something like that?

Yes...I was hoping that we could offer/advise something standardized
that all guix'ified upstreams could/would use.  I think that I've seen
`.guix.scm', but also a `guix.scm' that returns a manifest, so usage
would be `guix environment -m guix.scm', and no way to build the package
itself from git.

Once Guix is blessed `the GNU System' (any day now ;-) we need to have a
a thought-through proposal to amend standards.texi anyway.

Greetings,
janneke

--=20
Jan Nieuwenhuizen <janneke@HIDDEN> | GNU LilyPond http://lilypond.org
Freelance IT http://JoyofSource.com | Avatar=C2=AE http://AvatarAcademy.com
Information forwarded to guix-patches@HIDDEN:
bug#37478; Package guix-patches. Full text available.

Message received at 37478 <at> debbugs.gnu.org:


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From: =?utf-8?Q?Ludovic_Court=C3=A8s?= <ludo@HIDDEN>
To: Jan Nieuwenhuizen <janneke@HIDDEN>
Subject: Re: [bug#37478] [PATCH] Support canonical guix environment -l
 guix.scm.
References: <871rw88u5s.fsf@HIDDEN>
Date: Wed, 25 Sep 2019 15:28:06 +0200
In-Reply-To: <871rw88u5s.fsf@HIDDEN> (Jan Nieuwenhuizen's message of "Sun, 22
 Sep 2019 13:09:03 +0200")
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Hello,

Jan Nieuwenhuizen <janneke@HIDDEN> skribis:

> I often find myself typing `guix environment -l guix.scm' in the Guix
> source root and thought IWBN no make that "just work".  WYDT?

IWBN, but=E2=80=A6

> -(define-module (guix))
> +(define-module (guix)
> +  #:use-module (guix git-download)
> +  #:use-module (guix gexp)
> +  #:use-module (guix packages)
> +  #:use-module (gnu packages package-management))

=E2=80=A6 the (guix) module is a public module, and it must not depend on
anything but the (guix =E2=80=A6) modules it imports.

So unfortunately we can=E2=80=99t just do that.

Perhaps we could have a =E2=80=98.guix.scm=E2=80=99 file though, or
=E2=80=98build-aux/guix.scm=E2=80=99, something like that?

Thanks,
Ludo=E2=80=99.
Information forwarded to guix-patches@HIDDEN:
bug#37478; Package guix-patches. Full text available.

Message received at submit <at> debbugs.gnu.org:


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From: Jan Nieuwenhuizen <janneke@HIDDEN>
To: guix-patches@HIDDEN
Subject: [PATCH] Support canonical guix environment -l guix.scm.
Date: Sun, 22 Sep 2019 13:09:03 +0200
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Hi Guix,

I often find myself typing `guix environment -l guix.scm' in the Guix
source root and thought IWBN no make that "just work".  WYDT?

Greetings,
janneke

From 18f1ef75d38c8a40d2e1f8d56a041cd64bc5c64f Mon Sep 17 00:00:00 2001
From: Jan Nieuwenhuizen <janneke@HIDDEN>
Date: Sun, 22 Sep 2019 13:01:38 +0200
Subject: [PATCH] Support canonical guix environment -l guix.scm.
MIME-Version: 1.0
Content-Type: text/plain; charset=3DUTF-8
Content-Transfer-Encoding: 8bit

Developers are encouraged to include a `guix.scm' in the root of their proj=
ect
source to set-up a development environment (See 4.2 Invoking =E2=80=98guix =
package=E2=80=99),
so that

    guix environment -l guix.scm

provides a development environment.

* guix.scm: Return guix "git" package.
---
 guix.scm | 29 ++++++++++++++++++++++++++++-
 1 file changed, 28 insertions(+), 1 deletion(-)

diff --git a/guix.scm b/guix.scm
index 8753c21e42..919179e5cf 100644
--- a/guix.scm
+++ b/guix.scm
@@ -1,5 +1,6 @@
 ;;; GNU Guix --- Functional package management for GNU
 ;;; Copyright =C2=A9 2012, 2014 Ludovic Court=C3=A8s <ludo@HIDDEN>
+;;; Copyright =C2=A9 2019 Jan (janneke) Nieuwenhuizen <janneke@HIDDEN>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -16,7 +17,11 @@
 ;;; You should have received a copy of the GNU General Public License
 ;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.
=20
-(define-module (guix))
+(define-module (guix)
+  #:use-module (guix git-download)
+  #:use-module (guix gexp)
+  #:use-module (guix packages)
+  #:use-module (gnu packages package-management))
=20
 ;; The composite module that re-exports everything from the public modules.
=20
@@ -39,3 +44,25 @@
                 (lambda (m)
                   (module-use! i (resolve-interface `(guix ,m)))))
               %public-modules)))
+
+;; To setup the development environment, run the following:
+;;
+;;    guix environment -l guix.scm
+;;    ./bootstrap && ./configure;
+;;
+;; To build the development snapshot, run:
+;;
+;;    guix build -f guix.scm
+;;
+;; To install the development snapshot, run:
+;;
+;;    guix package -f guix.scm
+;;
+(define %source-dir (dirname (current-filename)))
+
+(package
+  (inherit guix)
+  (version "git")
+  (source (local-file %source-dir
+                      #:recursive? #t
+                      #:select? (git-predicate %source-dir))))
--=20
2.23.0

--=20
Jan Nieuwenhuizen <janneke@HIDDEN> | GNU LilyPond http://lilypond.org
Freelance IT http://JoyofSource.com | Avatar=C2=AE http://AvatarAcademy.com
Acknowledgement sent to Jan Nieuwenhuizen <janneke@HIDDEN>:
New bug report received and forwarded. Copy sent to guix-patches@HIDDEN. Full text available.
Report forwarded to guix-patches@HIDDEN:
bug#37478; Package guix-patches. Full text available.
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