emacsPackages.liberime: add build step to compile dynamic module (#508348)

pkgs/applications/editors/emacs/elisp-packages/melpa-packages.nix

@@ -1401,6 +1401,33 @@ let
 
           leaf-defaults = ignoreCompilationError super.leaf-defaults; # elisp error
 
+          liberime = super.liberime.overrideAttrs (
+            let
+              libExt = pkgs.stdenv.hostPlatform.extensions.sharedLibrary;
+            in
+            prevAttrs: {
+              buildInputs = prevAttrs.buildInputs ++ [
+                pkgs.librime
+              ];
+              nativeBuildInputs = prevAttrs.nativeBuildInputs ++ [
+                pkgs.which
+              ];
+              postBuild =
+                prevAttrs.postBuild or ""
+                + "\n"
+                + ''
+                  make CC=$CC SUFFIX=${libExt}
+                '';
+              postInstall =
+                prevAttrs.postInstall or ""
+                + "\n"
+                + ''
+                  rm -rv $out/share/emacs/site-lisp/elpa/liberime-*/{src,emacs-module,Makefile}
+                  install src/liberime-core${libExt} $out/share/emacs/site-lisp/elpa/liberime-*
+                '';
+            }
+          );
+
           # https://github.com/abo-abo/lispy/pull/683
           # missing optional dependencies
           lispy = addPackageRequires (mkHome super.lispy) [ self.indium ];