emacs: replace fetchFromSavannah with mirror

This commit re-apply a019344338 with
fixes and minor improvements.

Refs: #427024 #435964
Co-authored-by: Lin Jian <me@linj.tech>

pkgs/applications/editors/emacs/default.nix

@@ -13,7 +13,7 @@ lib.makeScope pkgs.newScope (
       inherit lib;
       inherit (pkgs)
         fetchFromBitbucket
-        fetchFromSavannah
+        fetchzip
         ;
     };
 

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

@@ -69,7 +69,7 @@
   # Boolean flags
   withNativeCompilation ? stdenv.buildPlatform.canExecute stdenv.hostPlatform,
   noGui ? false,
-  srcRepo ? true,
+  srcRepo ? false,
   withAcl ? false,
   withAlsaLib ? false,
   withAthena ? false,
@@ -204,6 +204,11 @@ mkDerivation (finalAttrs: {
       rm -fr .git
     '')
 
+    # See: https://github.com/NixOS/nixpkgs/issues/170426
+    (lib.optionalString (!srcRepo) ''
+      find . -type f \( -name "*.elc" -o -name "*loaddefs.el" \) -exec rm {} \;
+    '')
+
     # Add the name of the wrapped gvfsd
     # This used to be carried as a patch but it often got out of sync with
     # upstream and was hard to maintain for emacs-overlay.

pkgs/applications/editors/emacs/sources.nix

@@ -1,7 +1,7 @@
 {
   lib,
   fetchFromBitbucket,
-  fetchFromSavannah,
+  fetchzip,
 }:
 
 let
@@ -26,9 +26,9 @@ let
       src =
         {
           "mainline" = (
-            fetchFromSavannah {
-              repo = "emacs";
-              inherit rev hash;
+            fetchzip {
+              url = "mirror://gnu/emacs/${rev}.tar.xz";
+              inherit hash;
             }
           );
           "macport" = (
@@ -107,8 +107,8 @@ in
     pname = "emacs";
     version = "30.2";
     variant = "mainline";
-    rev = "30.2";
-    hash = "sha256-3Lfb3HqdlXqSnwJfxe7npa4GGR9djldy8bKRpkQCdSA=";
+    rev = "emacs-30.2";
+    hash = "sha256-W2eZ+cNQhi/fMeRkwOqSKU7Vzvp43WUOpiwaLLNEXtg=";
     patches = fetchpatch: [
       (builtins.path {
         name = "inhibit-lexical-cookie-warning-67916.patch";