[Backport release-24.05] emacs30: init

pkgs/applications/editors/emacs/default.nix

@@ -60,6 +60,20 @@ lib.makeScope pkgs.newScope (self:
       withPgtk = true;
     };
 
+    emacs30 = callPackage (self.sources.emacs30) inheritedArgs;
+
+    emacs30-gtk3 = self.emacs30.override {
+      withGTK3 = true;
+    };
+
+    emacs30-nox = self.emacs30.override {
+      noGui = true;
+    };
+
+    emacs30-pgtk = self.emacs30.override {
+      withPgtk = true;
+    };
+
     emacs28-macport = callPackage (self.sources.emacs28-macport) inheritedArgs;
 
     emacs29-macport = callPackage (self.sources.emacs29-macport) inheritedArgs;

pkgs/applications/editors/emacs/make-emacs.nix

@@ -76,6 +76,8 @@
 , withGlibNetworking ? withPgtk || withGTK3 || (withX && withXwidgets)
 , withGpm ? stdenv.isLinux
 , withImageMagick ? lib.versionOlder version "27" && (withX || withNS)
+# Emacs 30+ has native JSON support
+, withJansson ? lib.versionOlder version "30"
 , withMailutils ? true
 , withMotif ? false
 , withNS ? stdenv.isDarwin && !(variant == "macport" || noGui)
@@ -159,7 +161,9 @@ mkDerivation (finalAttrs: {
     (substituteAll {
       src = if lib.versionOlder finalAttrs.version "29"
             then ./native-comp-driver-options-28.patch
-            else ./native-comp-driver-options.patch;
+            else if lib.versionOlder finalAttrs.version "30"
+            then ./native-comp-driver-options.patch
+            else ./native-comp-driver-options-30.patch;
       backendPath = (lib.concatStringsSep " "
         (builtins.map (x: ''"-B${x}"'') ([
           # Paths necessary so the JIT compiler finds its libraries:
@@ -214,13 +218,15 @@ mkDerivation (finalAttrs: {
   ] ++ lib.optionals srcRepo [
     autoreconfHook
     texinfo
-  ] ++ lib.optional (withPgtk || withX && (withGTK3 || withXwidgets)) wrapGAppsHook3;
+  ] ++ lib.optionals (withPgtk || withX && (withGTK3 || withXwidgets)) [ wrapGAppsHook3 ];
 
   buildInputs = [
     gettext
     gnutls
-    harfbuzz.dev
+    (lib.getDev harfbuzz)
+  ] ++ lib.optionals withJansson [
     jansson
+  ] ++ [
     libxml2
     ncurses
   ] ++ lib.optionals withGconf [

pkgs/applications/editors/emacs/native-comp-driver-options-30.patch

@@ -0,0 +1,16 @@
+diff -Naur a/lisp/emacs-lisp/comp.el b/lisp/emacs-lisp/comp.el
+--- old/lisp/emacs-lisp/comp.el	1969-12-31 21:00:01.000000000 -0300
++++ source/lisp/emacs-lisp/comp.el	2024-09-13 14:26:37.246614196 -0300
+@@ -101,8 +101,10 @@
+   :version "28.1")
+
+ (defcustom native-comp-driver-options
+-  (cond ((eq system-type 'darwin) '("-Wl,-w"))
+-        ((eq system-type 'cygwin) '("-Wl,-dynamicbase")))
++  (append
++   (cond ((eq system-type 'darwin) '("-Wl,-w"))
++         ((eq system-type 'cygwin) '("-Wl,-dynamicbase")))
++   '(@backendPath@))
+   "Options passed verbatim to the native compiler's back-end driver.
+ Note that not all options are meaningful; typically only the options
+ affecting the assembler and linker are likely to be useful.

pkgs/applications/editors/emacs/sources.nix

@@ -110,6 +110,14 @@ in
     hash = "sha256-FCP6ySkN9mAdp2T09n6foS2OciqZXc/54guRZ0B4Z2s=";
   });
 
+  emacs30 = import ./make-emacs.nix (mkArgs {
+    pname = "emacs";
+    version = "30.0.91";
+    variant = "mainline";
+    rev = "30.0.91";
+    hash = "sha256-X5J34BUY42JgA1s76eVeGA9WNtesU2c+JyndIHFbONQ=";
+  });
+
   emacs28-macport = import ./make-emacs.nix (mkArgs {
     pname = "emacs-mac";
     version = "28.2";

pkgs/top-level/all-packages.nix

@@ -30448,10 +30448,17 @@ with pkgs;
     emacs28-gtk2
     emacs28-gtk3
     emacs28-nox
+
     emacs29
     emacs29-gtk3
     emacs29-nox
     emacs29-pgtk
+
+    emacs30
+    emacs30-gtk3
+    emacs30-nox
+    emacs30-pgtk
+
     emacs28-macport
     emacs29-macport
   ;