GNU bug report logs - #50349
[PATCH] packages: Add 'define-package' syntax.

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Package: guix; Severity: wishlist; Reported by: Sarah Morgensen <iskarian@HIDDEN>; Keywords: patch; merged with #15284; dated Fri, 3 Sep 2021 04:07:02 UTC; Maintainer for guix is bug-guix@HIDDEN.

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From: Tobias Geerinckx-Rice <me@HIDDEN>
To: Maxime Devos <maximedevos@HIDDEN>
Subject: Re: [bug#50349] [PATCH] packages: Add 'define-package' syntax.
Date: Sat, 04 Sep 2021 12:09:26 +0200
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All,

To keep a link with previous =E2=80=98define-package=E2=80=99 discussion, I=
've=20
merged this bug with #15284.  It was never resolved IMO and things=20
have changed since 2013 with the label-less input style.

Maxime Devos =E5=86=99=E9=81=93=EF=BC=9A
> This could be even shorter in the special case that the variable=20
> name
> and package name are the same (modulo types):
>
> (define-package "my-favorite-package"
>   (version ...)
>   ...)

(define-anything STRING ...) is just too weird to ack.  Are there=20
any package names that aren't currently valid symbols?  Is there a=20
good reason for them?

Kind regards,

T G-R

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Information forwarded to bug-guix@HIDDEN:
bug#50349; Package guix. Full text available.

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From: Tobias Geerinckx-Rice <me@HIDDEN>
To: Maxime Devos <maximedevos@HIDDEN>
Subject: Re: [bug#50349] [PATCH] packages: Add 'define-package' syntax.
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All,

To keep a link with previous =E2=80=98define-package=E2=80=99 discussion, I=
've=20
merged this bug with #15284.  It was never resolved IMO and things=20
have changed since 2013 with the label-less input style.

Maxime Devos =E5=86=99=E9=81=93=EF=BC=9A
> This could be even shorter in the special case that the variable=20
> name
> and package name are the same (modulo types):
>
> (define-package "my-favorite-package"
>   (version ...)
>   ...)

(define-anything STRING ...) is just too weird to ack.  Are there=20
any package names that aren't currently valid symbols?  Is there a=20
good reason for them?

Kind regards,

T G-R

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Information forwarded to bug-guix@HIDDEN:
bug#50349; Package guix. Full text available.
Merged 15284 50349. Request was from Tobias Geerinckx-Rice <me@HIDDEN> to control <at> debbugs.gnu.org. Full text available.
bug reassigned from package 'guix-patches' to 'guix'. Request was from Tobias Geerinckx-Rice <me@HIDDEN> to control <at> debbugs.gnu.org. Full text available.
Severity set to 'wishlist' from 'normal' Request was from Tobias Geerinckx-Rice <me@HIDDEN> to control <at> debbugs.gnu.org. Full text available.

Message received at 50349 <at> debbugs.gnu.org:


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Subject: Re: [bug#50349] [PATCH] packages: Add 'define-package' syntax.
From: Maxime Devos <maximedevos@HIDDEN>
To: Sarah Morgensen <iskarian@HIDDEN>, 50349 <at> debbugs.gnu.org
Date: Sat, 04 Sep 2021 10:42:02 +0200
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Sarah Morgensen schreef op do 02-09-2021 om 21:06 [-0700]:
> Hello Guix,
>=20
> This patch adds a shorthand for "(define-public name (package ...))":
>=20
> (define-package my-favorite-package
>   (name "my-favorite-package")
>   ...)

This could be even shorter in the special case that the variable name
and package name are the same (modulo types):

(define-package "my-favorite-package"
  (version ...)
  ...)

'datum->syntax' and 'string->symbol' can be used to turn "my-favorite-packa=
ge"
into an identifier.

A 'define-unexported-package' might be required in some places.

> The purpose is primarily to save the horizontal indent, but IMO it looks
> better, and is marginally more clear for newcomers.  I think ideally we c=
ould
> eventually transition to using this syntax as the primary syntax and only=
 use
> 'define-public' when necessary.
>=20
> There are some downsides... it's one more form to keep track of, and 'let=
'
> forms can't easily be used with it.
>=20
> Since it's a syntax rule, it doesn't cause packages to rebuild (tested). =
I've
> also tested the indentation rules, indent-code.el, and the snippets.
>=20
> This probably deserves a documentation addition, but I wasn't sure where =
to
> add it without confusing newcomers.  Suggestions welcome!

=E2=80=98Defining Packages=E2=80=99 would be a good place I think.

> What do you all think?

This looks nice to me.  IIUC, the define-package is intended to be clearer
to newcomers, so you might want to ask for feedback on the new syntax on
help-guix@HIDDEN

Greetings,
Maxime.

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Information forwarded to guix-patches@HIDDEN:
bug#50349; Package guix-patches. Full text available.

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From: Sarah Morgensen <iskarian@HIDDEN>
To: zimoun <zimon.toutoune@HIDDEN>
Subject: Re: [bug#50349] [PATCH] packages: Add 'define-package' syntax.
Date: Fri, 03 Sep 2021 14:56:36 -0700
In-Reply-To: zimoun's message of "Fri, 03 Sep 2021 07:41:18 +0200 (15 hours,
 51 minutes, 17 seconds ago)"
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Hi,

zimoun <zimon.toutoune@HIDDEN> writes:

> Hi Sarah,
>
> On Thu, 02 Sep 2021 at 21:06, Sarah Morgensen <iskarian@HIDDEN> wrote:
>
>> (define-package my-favorite-package
>>   (name "my-favorite-package")
>>   ...)
>>
>> The purpose is primarily to save the horizontal indent, but IMO it looks
>> better, and is marginally more clear for newcomers.  I think ideally we =
could
>> eventually transition to using this syntax as the primary syntax and onl=
y use
>> 'define-public' when necessary.
>
> On one hand, I think it is a good idea; especially for newcomers.  On
> the other hand, it will break =E2=80=99git-blame=E2=80=99, isn=E2=80=99t =
it?

Yes, there would be a one-time discontinuity.  Reformats like this can
be ignored with the `--ignore-ref' option, or with a file and a config
option:

.git-blame-ignore-revs:
--8<---------------cut here---------------start------------->8---
# Convert 'define-public' forms to 'define-package' forms
15d01b32313f5f2f291b120597719ae92bd26acd
--8<---------------cut here---------------end--------------->8---

.git/config:
--8<---------------cut here---------------start------------->8---
[blame]
        ignoreRevsFile =3D .git-blame-ignore-revs
--8<---------------cut here---------------end--------------->8---

We could include the latter in e.g. a `.gitconfig' file committed to the
repo, but in order to use config settings from the file, users would
have to first run

  git config --local include.path ../.gitconfig

Thankfully, this only has to be done once per clone.  If you really
wanted to make sure it got run, I suppose you could add it to a 'make'
target.

--
Sarah




Information forwarded to guix-patches@HIDDEN:
bug#50349; Package guix-patches. Full text available.

Message received at 50349 <at> debbugs.gnu.org:


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From: zimoun <zimon.toutoune@HIDDEN>
To: Sarah Morgensen <iskarian@HIDDEN>, 50349 <at> debbugs.gnu.org
Subject: Re: [bug#50349] [PATCH] packages: Add 'define-package' syntax.
In-Reply-To: <15d01b32313f5f2f291b120597719ae92bd26acd.1630639896.git.iskarian@HIDDEN>
References: <15d01b32313f5f2f291b120597719ae92bd26acd.1630639896.git.iskarian@HIDDEN>
Date: Fri, 03 Sep 2021 07:41:18 +0200
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Hi Sarah,

On Thu, 02 Sep 2021 at 21:06, Sarah Morgensen <iskarian@HIDDEN> wrote:

> (define-package my-favorite-package
>   (name "my-favorite-package")
>   ...)
>
> The purpose is primarily to save the horizontal indent, but IMO it looks
> better, and is marginally more clear for newcomers.  I think ideally we c=
ould
> eventually transition to using this syntax as the primary syntax and only=
 use
> 'define-public' when necessary.

On one hand, I think it is a good idea; especially for newcomers.  On
the other hand, it will break =E2=80=99git-blame=E2=80=99, isn=E2=80=99t it?

Therefore, I am not convinced such change is worth for =E2=80=99gnu/package=
s/=E2=80=99.
Instead it seems worth only for teaching custom packages.  Explaining to
people in my labs, they are often confused between =E2=80=99define=E2=80=99=
 and
=E2=80=99define-public=E2=80=99.  But then, there is two =E2=80=9Cstyles=E2=
=80=9D and people could be
more confused.

Well, my feelings are mixed.  Thanks for opening the discussion. :-)


Cheers,
simon




Information forwarded to guix-patches@HIDDEN:
bug#50349; Package guix-patches. Full text available.

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From: Sarah Morgensen <iskarian@HIDDEN>
To: guix-patches@HIDDEN
Subject: [PATCH] packages: Add 'define-package' syntax.
Date: Thu,  2 Sep 2021 21:06:26 -0700
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* guix/packages.scm (define-package): New syntax.
* .dir-locals.el: Add indent rule for 'define-package'.
* etc/indent-code.el (main): Adjust package search regex accordingly.
* etc/snippets/text-mode/guix-commit-message-add-cl-package: Likewise.
* etc/snippets/text-mode/guix-commit-message-add-package: Likewise.
* etc/snippets/text-mode/guix-commit-message-rename-package: Likewise.
* etc/snippets/text-mode/guix-commit-message-update-package: Likewise.
---
Hello Guix,

This patch adds a shorthand for "(define-public name (package ...))":

(define-package my-favorite-package
  (name "my-favorite-package")
  ...)

The purpose is primarily to save the horizontal indent, but IMO it looks
better, and is marginally more clear for newcomers.  I think ideally we could
eventually transition to using this syntax as the primary syntax and only use
'define-public' when necessary.

There are some downsides... it's one more form to keep track of, and 'let'
forms can't easily be used with it.

Since it's a syntax rule, it doesn't cause packages to rebuild (tested). I've
also tested the indentation rules, indent-code.el, and the snippets.

This probably deserves a documentation addition, but I wasn't sure where to
add it without confusing newcomers.  Suggestions welcome!

(If this is accepted, we'll also want to make a few changes to
emacs-guix/elisp/guix-devel.el, adding 'define-package' to
'guix-devel-keywords' and to 'guix-devel-scheme-indent' with level 1.)

What do you all think?
--
Sarah

 .dir-locals.el                                            | 1 +
 etc/indent-code.el                                        | 2 +-
 etc/snippets/text-mode/guix-commit-message-add-cl-package | 2 +-
 etc/snippets/text-mode/guix-commit-message-add-package    | 2 +-
 etc/snippets/text-mode/guix-commit-message-rename-package | 4 ++--
 etc/snippets/text-mode/guix-commit-message-update-package | 2 +-
 guix/packages.scm                                         | 8 ++++++++
 7 files changed, 15 insertions(+), 6 deletions(-)

diff --git a/.dir-locals.el b/.dir-locals.el
index aaa48ab552..8141cf4fc2 100644
--- a/.dir-locals.el
+++ b/.dir-locals.el
@@ -71,6 +71,7 @@
    (eval . (put 'with-writable-file 'scheme-indent-function 2))
 
    (eval . (put 'package 'scheme-indent-function 0))
+   (eval . (put 'define-package 'scheme-indent-function 1))
    (eval . (put 'package/inherit 'scheme-indent-function 1))
    (eval . (put 'origin 'scheme-indent-function 0))
    (eval . (put 'build-system 'scheme-indent-function 0))
diff --git a/etc/indent-code.el b/etc/indent-code.el
index bdea8ee8bf..b83659f2f9 100755
--- a/etc/indent-code.el
+++ b/etc/indent-code.el
@@ -94,7 +94,7 @@
      ;; Indent the definition of PACKAGE-NAME in FILE-NAME.
      (find-file file-name)
      (goto-char (point-min))
-     (if (re-search-forward (concat "^(define\\(\\|-public\\) +"
+     (if (re-search-forward (concat "^(define\\(\\|-public\\|-package\\) +"
                                     package-name)
                             nil t)
          (let ((indent-tabs-mode nil))
diff --git a/etc/snippets/text-mode/guix-commit-message-add-cl-package b/etc/snippets/text-mode/guix-commit-message-add-cl-package
index e255736b05..eb0de677e7 100644
--- a/etc/snippets/text-mode/guix-commit-message-add-cl-package
+++ b/etc/snippets/text-mode/guix-commit-message-add-cl-package
@@ -7,7 +7,7 @@ gnu: Add ${1:`(with-temp-buffer
                 (magit-git-wash #'magit-diff-wash-diffs
                   "diff" "--staged")
                 (beginning-of-buffer)
-                (when (search-forward "+(define-public " nil 'noerror)
+                (when (re-search-forward "+(define-\\(public\\|package\\) " nil 'noerror)
                   (replace-regexp-in-string
 		   "^sbcl-" ""
 		   (thing-at-point 'sexp 'no-properties))))`}.
diff --git a/etc/snippets/text-mode/guix-commit-message-add-package b/etc/snippets/text-mode/guix-commit-message-add-package
index 7cebd4023a..11aeceb129 100644
--- a/etc/snippets/text-mode/guix-commit-message-add-package
+++ b/etc/snippets/text-mode/guix-commit-message-add-package
@@ -7,7 +7,7 @@ gnu: Add ${1:`(with-temp-buffer
                 (magit-git-wash #'magit-diff-wash-diffs
                   "diff" "--staged")
                 (goto-char (point-min))
-                (when (re-search-forward "\\+(define-public \\(\\S-+\\)" nil 'noerror)
+                (when (re-search-forward "\\+(define-\\(?:public\\|package\\) \\(\\S-+\\)" nil 'noerror)
                   (match-string-no-properties 1)))`}.
 
 * `(car (magit-staged-files))` ($1): New variable.
\ No newline at end of file
diff --git a/etc/snippets/text-mode/guix-commit-message-rename-package b/etc/snippets/text-mode/guix-commit-message-rename-package
index 9695ca1b3d..2315443573 100644
--- a/etc/snippets/text-mode/guix-commit-message-rename-package
+++ b/etc/snippets/text-mode/guix-commit-message-rename-package
@@ -7,12 +7,12 @@ gnu: ${1:`(with-temp-buffer
            (magit-git-wash #'magit-diff-wash-diffs
              "diff" "--staged")
            (beginning-of-buffer)
-           (when (search-forward "-(define-public " nil 'noerror)
+           (when (re-search-forward "-(define-\\(public\\|package\\) " nil 'noerror)
              (thing-at-point 'sexp 'no-properties)))`}: Rename package to ${2:`(with-temp-buffer
            (magit-git-wash #'magit-diff-wash-diffs
              "diff" "--staged")
            (beginning-of-buffer)
-           (when (search-forward "+(define-public " nil 'noerror)
+           (when (re-search-forward "+(define-\\(public\\|package\\) " nil 'noerror)
              (thing-at-point 'sexp 'no-properties)))`}.
 
 * `(car (magit-staged-files))` ($1): Define in terms of
diff --git a/etc/snippets/text-mode/guix-commit-message-update-package b/etc/snippets/text-mode/guix-commit-message-update-package
index f187419aa2..1d39e28b77 100644
--- a/etc/snippets/text-mode/guix-commit-message-update-package
+++ b/etc/snippets/text-mode/guix-commit-message-update-package
@@ -8,7 +8,7 @@ gnu: ${1:`(with-temp-buffer
            (magit-git-wash #'magit-diff-wash-diffs
              "diff" "--staged")
            (goto-char (point-min))
-           (when (re-search-forward "(define-public \\(\\S-+\\)" nil 'noerror)
+           (when (re-search-forward "(define-\\(?:public\\|package\\) \\(\\S-+\\)" nil 'noerror)
              (match-string-no-properties 1)))`}: Update to ${2:`(with-temp-buffer
     (magit-git-wash #'magit-diff-wash-diffs
       "diff" "--staged")
diff --git a/guix/packages.scm b/guix/packages.scm
index c825f427d8..ecd0b7e47d 100644
--- a/guix/packages.scm
+++ b/guix/packages.scm
@@ -6,6 +6,7 @@
 ;;; Copyright © 2017, 2019, 2020 Efraim Flashner <efraim@HIDDEN>
 ;;; Copyright © 2019 Marius Bakke <mbakke@HIDDEN>
 ;;; Copyright © 2021 Chris Marusich <cmmarusich@HIDDEN>
+;;; Copyright © 2021 Sarah Morgensen <iskarian@HIDDEN>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -99,6 +100,7 @@ (define-module (guix packages)
             package-supported-systems
             package-properties
             package-location
+            define-package
             hidden-package
             hidden-package?
             package-superseded
@@ -425,6 +427,12 @@ (define-record-type* <package>
                                                        package)
                                                       16)))))
 
+(define-syntax-rule (define-package name body ...)
+  "Equivalent to (define-public name (package body ...))."
+  (define-public name
+    (package
+      body ...)))
+
 (define-syntax-rule (package/inherit p overrides ...)
   "Like (package (inherit P) OVERRIDES ...), except that the same
 transformation is done to the package P's replacement, if any.  P must be a bare

base-commit: 95c29d2746943733cbe8df7013854d45bb0df413
-- 
2.31.1





Acknowledgement sent to Sarah Morgensen <iskarian@HIDDEN>:
New bug report received and forwarded. Copy sent to guix-patches@HIDDEN. Full text available.
Report forwarded to guix-patches@HIDDEN:
bug#50349; Package guix-patches. Full text available.
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