GNU bug report logs - #77990
[PATCH] gnu: Add emacs-ffi.

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Package: guix-patches; Reported by: "Suhail Singh" <suhailsingh247@HIDDEN>; Keywords: patch; dated Tue, 22 Apr 2025 15:26:02 UTC; Maintainer for guix-patches is guix-patches@HIDDEN.

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From: Suhail Singh <suhailsingh247@HIDDEN>
To: Cayetano Santos <csantosb@HIDDEN>
Subject: Re: [bug#77990] [PATCH v2] gnu: Add emacs-ffi.
In-Reply-To: <87jz7cowv0.fsf@HIDDEN> (Cayetano Santos's message of
 "Tue, 22 Apr 2025 20:49:07 +0200")
References: <8514e002c91917232069fcff792b089241b02cbc.1745335509.git.suhail@HIDDEN>
 <bf785b91e8c2fe9844c2fc3c472d86d2e39e61e4.1745335913.git.suhail@HIDDEN>
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Cc: Ian Eure <ian@HIDDEN>,
 Katherine Cox-Buday <cox.katherine.e+guix@HIDDEN>,
 Liliana Marie Prikler <liliana.prikler@HIDDEN>,
 Andrew Tropin <andrew@HIDDEN>, Hilton Chain <hako@HIDDEN>,
 77990 <at> debbugs.gnu.org, Divya Ranjan Pattanaik <divya@HIDDEN>,
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Cayetano Santos <csantosb@HIDDEN> writes:

>> +              ;; Install the shared object file into /lib.
>> +              (install-file "build/lib/ffi-module.so"
>> +                            (string-append #$output "/lib"))))
>
> I have a doubt about where do we  put .so files.
>
> - lib
> - lib/package
> - lib/emacs (see emacs-jinx)
>
> Other than this, LFTM.

IIUC the standard place for shared libraries is in #$output/lib.  I
don't know of any reason to deviate from that in this case.  To the
extent it matters, at least one other dynamic module (emacs-sqlite3-api)
also uses that convention.

I'm no authority, but it seems that Emacs dynamic modules are simply
less consistent about storing libraries in the standard location, rather
than there being a principled reason against using the standard
convention.

Thanks for the review.

-- 
Suhail
Information forwarded to guix-patches@HIDDEN:
bug#77990; Package guix-patches. Full text available.

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From: Cayetano Santos <csantosb@HIDDEN>
To: "Suhail Singh" <suhailsingh247@HIDDEN>
Subject: Re: [bug#77990] [PATCH v2] gnu: Add emacs-ffi.
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--=-=-=
Content-Type: text/plain


>mar. 22 avril 2025 at 10:51, "Suhail Singh" <suhailsingh247@HIDDEN> wrote:

> * gnu/packages/emacs-xyz.scm (emacs-ffi): New variable.
>
> Change-Id: I3379ff4728d3e3f45d5327978b5e284fcc0e664e
> ---
>  gnu/packages/emacs-xyz.scm | 53 ++++++++++++++++++++++++++++++++++++++
>  1 file changed, 53 insertions(+)
>
> diff --git a/gnu/packages/emacs-xyz.scm b/gnu/packages/emacs-xyz.scm
> index 08bd88fd08..e6253089e8 100644
> --- a/gnu/packages/emacs-xyz.scm
> +++ b/gnu/packages/emacs-xyz.scm
> @@ -236,6 +236,7 @@ (define-module (gnu packages emacs-xyz)
>    #:use-module (gnu packages llvm)
>    #:use-module (gnu packages image)
>    #:use-module (gnu packages image-viewers)
> +  #:use-module (gnu packages libffi)
>    #:use-module (gnu packages linux)
>    #:use-module (gnu packages libevent)
>    #:use-module (gnu packages lisp)
> @@ -23092,6 +23093,58 @@ (define-public emacs-display-wttr
>  @uref{https://wttr.in} and then displays it on the mode line.")
>      (license license:gpl3+)))
>
> +(define-public emacs-ffi
> +  (package
> +    (name "emacs-ffi")
> +    (version "0.2.1")
> +    (source
> +     (origin
> +       (method git-fetch)
> +       (uri (git-reference
> +             (url "https://github.com/emacs-ffi/emacs-ffi")
> +             (commit version)))
> +       (file-name (git-file-name name version))
> +       (sha256
> +        (base32 "05crpgscpbzkg4k0ylbfjz2wyw2r8lki8q9w2kmdpljsqrpdrwl0"))))
> +    (build-system emacs-build-system)
> +    (arguments
> +     (list
> +      #:tests? (not (%current-target-system))
> +      #:phases
> +      #~(modify-phases %standard-phases
> +          (add-after 'unpack 'patch-module-load
> +            (lambda _
> +              (make-file-writable "src/ffi.el")
> +              (emacs-substitute-sexps "src/ffi.el"
> +                ("(require 'ffi-module nil t)"
> +                 `(module-load
> +                   ,(string-append #$output "/lib/ffi-module.so"))))))
> +          (add-before 'check 'build-emacs-module
> +            (lambda _
> +              ;; Compile the shared object file.
> +              (invoke "make"
> +                      #$(string-append "CC="
> +                                       (cc-for-target)))
> +              ;; Copy the build artifacts to root and let the install phase do
> +              ;; its thing
> +              (copy-recursively "build/lib" ".")
> +              ;; Install the shared object file into /lib.
> +              (install-file "build/lib/ffi-module.so"
> +                            (string-append #$output "/lib"))))

I have a doubt about where do we  put .so files.

- lib
- lib/package
- lib/emacs (see emacs-jinx)

Other than this, LFTM.

C.

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Information forwarded to guix-patches@HIDDEN:
bug#77990; Package guix-patches. Full text available.

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From: "Suhail Singh" <suhailsingh247@HIDDEN>
To: 77990 <at> debbugs.gnu.org
Subject: [PATCH v2] gnu: Add emacs-ffi.
Date: Tue, 22 Apr 2025 10:51:53 -0400
X-Debbugs-Cc: Andrew Tropin <andrew@HIDDEN>, Cayetano Santos
 <csantosb@HIDDEN>, Divya Ranjan Pattanaik <divya@HIDDEN>,
 Hilton Chain <hako@HIDDEN>, Ian Eure <ian@HIDDEN>,
 Katherine Cox-Buday <cox.katherine.e+guix@HIDDEN>, Liliana Marie
 Prikler <liliana.prikler@HIDDEN>
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* gnu/packages/emacs-xyz.scm (emacs-ffi): New variable.

Change-Id: I3379ff4728d3e3f45d5327978b5e284fcc0e664e
---
 gnu/packages/emacs-xyz.scm | 53 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 53 insertions(+)

diff --git a/gnu/packages/emacs-xyz.scm b/gnu/packages/emacs-xyz.scm
index 08bd88fd08..e6253089e8 100644
--- a/gnu/packages/emacs-xyz.scm
+++ b/gnu/packages/emacs-xyz.scm
@@ -236,6 +236,7 @@ (define-module (gnu packages emacs-xyz)
   #:use-module (gnu packages llvm)
   #:use-module (gnu packages image)
   #:use-module (gnu packages image-viewers)
+  #:use-module (gnu packages libffi)
   #:use-module (gnu packages linux)
   #:use-module (gnu packages libevent)
   #:use-module (gnu packages lisp)
@@ -23092,6 +23093,58 @@ (define-public emacs-display-wttr
 @uref{https://wttr.in} and then displays it on the mode line.")
     (license license:gpl3+)))
 
+(define-public emacs-ffi
+  (package
+    (name "emacs-ffi")
+    (version "0.2.1")
+    (source
+     (origin
+       (method git-fetch)
+       (uri (git-reference
+             (url "https://github.com/emacs-ffi/emacs-ffi")
+             (commit version)))
+       (file-name (git-file-name name version))
+       (sha256
+        (base32 "05crpgscpbzkg4k0ylbfjz2wyw2r8lki8q9w2kmdpljsqrpdrwl0"))))
+    (build-system emacs-build-system)
+    (arguments
+     (list
+      #:tests? (not (%current-target-system))
+      #:phases
+      #~(modify-phases %standard-phases
+          (add-after 'unpack 'patch-module-load
+            (lambda _
+              (make-file-writable "src/ffi.el")
+              (emacs-substitute-sexps "src/ffi.el"
+                ("(require 'ffi-module nil t)"
+                 `(module-load
+                   ,(string-append #$output "/lib/ffi-module.so"))))))
+          (add-before 'check 'build-emacs-module
+            (lambda _
+              ;; Compile the shared object file.
+              (invoke "make"
+                      #$(string-append "CC="
+                                       (cc-for-target)))
+              ;; Copy the build artifacts to root and let the install phase do
+              ;; its thing
+              (copy-recursively "build/lib" ".")
+              ;; Install the shared object file into /lib.
+              (install-file "build/lib/ffi-module.so"
+                            (string-append #$output "/lib"))))
+          (add-before 'install 'installinfo
+            (lambda _
+              (install-file "build/doc/emacs-ffi.info"
+                            (string-append #$output "/share/info")))))))
+    (inputs (list emacs-compat libltdl libffi))
+    (native-inputs (list texinfo))
+    (home-page "https://emacs-ffi.github.io/emacs-ffi/")
+    (synopsis "FFI for Emacs based on libffi")
+    (description
+     "This package provides an FFI for Emacs.  It is based on
+libffi and relies on the dynamic module support in order to be loaded into
+Emacs.  It is relatively full-featured, but for the time being low-level.")
+    (license license:gpl3+)))
+
 (define-public emacs-free-keys
   (package
     (name "emacs-free-keys")

base-commit: c8194a529724721e2b96e0fe259cd92b63ff57aa
Information forwarded to andrew@HIDDEN, csantosb@HIDDEN, divya@HIDDEN, hako@HIDDEN, ian@HIDDEN, cox.katherine.e+guix@HIDDEN, liliana.prikler@HIDDEN, guix-patches@HIDDEN:
bug#77990; Package guix-patches. Full text available.

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


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 Tue, 22 Apr 2025 08:25:33 -0700 (PDT)
From: "Suhail Singh" <suhailsingh247@HIDDEN>
To: guix-patches@HIDDEN
Subject: [PATCH] gnu: Add emacs-ffi.
Date: Tue, 22 Apr 2025 10:51:53 -0400
X-Debbugs-Cc: Andrew Tropin <andrew@HIDDEN>, Cayetano Santos
 <csantosb@HIDDEN>, Divya Ranjan Pattanaik <divya@HIDDEN>,
 Hilton Chain <hako@HIDDEN>, Ian Eure <ian@HIDDEN>,
 Katherine Cox-Buday <cox.katherine.e+guix@HIDDEN>, Liliana Marie
 Prikler <liliana.prikler@HIDDEN>
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 Content preview: * gnu/packages/emacs-xyz.scm (emacs-ffi): New variable.
 Change-Id:
 I3379ff4728d3e3f45d5327978b5e284fcc0e664e --- gnu/packages/emacs-xyz.scm
 | 53 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 53 insertions(+)
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* gnu/packages/emacs-xyz.scm (emacs-ffi): New variable.

Change-Id: I3379ff4728d3e3f45d5327978b5e284fcc0e664e
---
 gnu/packages/emacs-xyz.scm | 53 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 53 insertions(+)

diff --git a/gnu/packages/emacs-xyz.scm b/gnu/packages/emacs-xyz.scm
index 08bd88fd08..efdb658bf7 100644
--- a/gnu/packages/emacs-xyz.scm
+++ b/gnu/packages/emacs-xyz.scm
@@ -236,6 +236,7 @@ (define-module (gnu packages emacs-xyz)
   #:use-module (gnu packages llvm)
   #:use-module (gnu packages image)
   #:use-module (gnu packages image-viewers)
+  #:use-module (gnu packages libffi)
   #:use-module (gnu packages linux)
   #:use-module (gnu packages libevent)
   #:use-module (gnu packages lisp)
@@ -23092,6 +23093,58 @@ (define-public emacs-display-wttr
 @uref{https://wttr.in} and then displays it on the mode line.")
     (license license:gpl3+)))
 
+(define-public emacs-ffi
+  (package
+    (name "emacs-ffi")
+    (version "0.2.1")
+    (source
+     (origin
+       (method git-fetch)
+       (uri (git-reference
+             (url "https://github.com/emacs-ffi/emacs-ffi")
+             (commit version)))
+       (file-name (git-file-name name version))
+       (sha256
+        (base32 "05crpgscpbzkg4k0ylbfjz2wyw2r8lki8q9w2kmdpljsqrpdrwl0"))))
+    (build-system emacs-build-system)
+    (arguments
+     (list
+      #:tests? (not (%current-target-system))
+      #:phases
+      #~(modify-phases %standard-phases
+          (add-after 'unpack 'patch-module-load
+            (lambda _
+              (make-file-writable "src/ffi.el")
+              (emacs-substitute-sexps "src/ffi.el"
+                ("(require 'ffi-module nil t)"
+                 `(module-load
+                   ,(string-append #$output "/lib/ffi-module.so"))))))
+          (add-before 'check 'build-emacs-module
+            (lambda _
+              ;; Compile the shared object file.
+              (invoke "make"
+                      #$(string-append "CC="
+                                       (cc-for-target)))
+              ;; Copy the build artifacts to root and let the install phase do
+              ;; its thing
+              (copy-recursively "build/lib" ".")
+              ;; Install the shared object file into /lib.
+              (install-file "build/lib/ffi-module.so"
+                            (string-append #$output "/lib"))))
+          (add-before 'install 'installinfo
+            (lambda _
+              (install-file "build/doc/emacs-ffi.info"
+                            (string-append #$output "/share/info")))))))
+    (inputs (list emacs-compat libltdl libffi))
+    (native-inputs (list texinfo))
+    (home-page "https://emacs-ffi.github.io/emacs-ffi/")
+    (synopsis "FFI for Emacs based in libffi")
+    (description
+     "This package provides an FFI for Emacs.  It is based on
+libffi and relies on the dynamic module support in order to be loaded into
+Emacs.  It is relatively full-featured, but for the time being low-level.")
+    (license license:gpl3+)))
+
 (define-public emacs-free-keys
   (package
     (name "emacs-free-keys")

base-commit: c8194a529724721e2b96e0fe259cd92b63ff57aa
Acknowledgement sent to "Suhail Singh" <suhailsingh247@HIDDEN>:
New bug report received and forwarded. Copy sent to andrew@HIDDEN, csantosb@HIDDEN, divya@HIDDEN, hako@HIDDEN, ian@HIDDEN, cox.katherine.e+guix@HIDDEN, liliana.prikler@HIDDEN, guix-patches@HIDDEN. Full text available.
Report forwarded to andrew@HIDDEN, csantosb@HIDDEN, divya@HIDDEN, hako@HIDDEN, ian@HIDDEN, cox.katherine.e+guix@HIDDEN, liliana.prikler@HIDDEN, guix-patches@HIDDEN:
bug#77990; Package guix-patches. Full text available.
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