From 6dd389dd9f3ced16f8a436a10445297540dfca8b Mon Sep 17 00:00:00 2001
From: Anthony Cowley <acowley@gmail.com>
Date: Thu, 17 Aug 2023 11:27:02 -0400
Subject: [PATCH] elpa-packages: build xeft dynamic module

Build the native dynamic module required by the xeft package for Emacs.
---
 .../emacs/elisp-packages/elpa-packages.nix      | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/pkgs/applications/editors/emacs/elisp-packages/elpa-packages.nix b/pkgs/applications/editors/emacs/elisp-packages/elpa-packages.nix
index e792a758373b..2808ec7fcc0f 100644
--- a/pkgs/applications/editors/emacs/elisp-packages/elpa-packages.nix
+++ b/pkgs/applications/editors/emacs/elisp-packages/elpa-packages.nix
@@ -158,6 +158,23 @@ self: let
         }
       );
 
+      xeft = super.xeft.overrideAttrs (old: let
+        libExt = pkgs.stdenv.targetPlatform.extensions.sharedLibrary;
+      in {
+        dontUnpack = false;
+
+        buildInputs = (old.buildInputs or [ ]) ++ [ pkgs.xapian ];
+        buildPhase = (old.buildPhase or "") + ''
+          $CXX -shared -o xapian-lite${libExt} xapian-lite.cc $NIX_CFLAGS_COMPILE -lxapian
+        '';
+        postInstall = (old.postInstall or "") + "\n" + ''
+          outd=$out/share/emacs/site-lisp/elpa/xeft-*
+          install -m444 -t $outd xapian-lite${libExt}
+          rm $outd/xapian-lite.cc $outd/emacs-module.h $outd/emacs-module-prelude.h $outd/demo.gif $outd/Makefile
+        '';
+      });
+
+
     };
 
     elpaPackages = super // overrides;