diff --git a/pkgs/by-name/li/libfm/0001-fm-load-all-actions.patch b/pkgs/by-name/li/libfm/0001-fm-load-all-actions.patch
deleted file mode 100644
index 997300c07e3f8..0000000000000
--- a/pkgs/by-name/li/libfm/0001-fm-load-all-actions.patch
+++ /dev/null
@@ -1,11 +0,0 @@
---- a/src/actions/action.c
-+++ b/src/actions/action.c
-@@ -2047,7 +2047,7 @@
- 	gchar* _tmp9_ = NULL;
- 	_tmp0_ = fm_all_actions;
- 	g_hash_table_remove_all (_tmp0_);
--	_tmp2_ = _tmp1_ = g_get_system_data_dirs ();
-+	_tmp2_ = _tmp1_ = (gchar **)g_get_system_data_dirs ();
- 	dirs = _tmp2_;
- 	dirs_length1 = _vala_array_length (_tmp1_);
- 	_dirs_size_ = dirs_length1;
diff --git a/pkgs/by-name/li/libfm/0002-exo-icon-view-key-press-event.patch b/pkgs/by-name/li/libfm/0002-exo-icon-view-key-press-event.patch
deleted file mode 100644
index 6f0965430112a..0000000000000
--- a/pkgs/by-name/li/libfm/0002-exo-icon-view-key-press-event.patch
+++ /dev/null
@@ -1,11 +0,0 @@
---- a/src/gtk/exo/exo-icon-view.c
-+++ b/src/gtk/exo/exo-icon-view.c
-@@ -2819,7 +2819,7 @@
-   /* allocate a new event to forward */
-   new_event = gdk_event_copy ((GdkEvent *) event);
-   g_object_unref (G_OBJECT (new_event->key.window));
--  new_event->key.window = g_object_ref (G_OBJECT (gtk_widget_get_window (icon_view->priv->search_entry)));
-+  new_event->key.window = (GdkWindow *)g_object_ref (G_OBJECT (gtk_widget_get_window (icon_view->priv->search_entry)));
- 
-   /* send the event to the search entry. If the "preedit-changed" signal is
-    * emitted during this event, priv->search_imcontext_changed will be set.
diff --git a/pkgs/by-name/li/libfm/0003-ask-action-on-drop.patch b/pkgs/by-name/li/libfm/0003-ask-action-on-drop.patch
deleted file mode 100644
index 6106ec9280f52..0000000000000
--- a/pkgs/by-name/li/libfm/0003-ask-action-on-drop.patch
+++ /dev/null
@@ -1,11 +0,0 @@
---- a/src/gtk/fm-dnd-dest.c
-+++ b/src/gtk/fm-dnd-dest.c
-@@ -458,7 +458,7 @@
-             gtk_action_set_sensitive(act, FALSE);
-         }
-     }
--    ri.menu = g_object_ref(gtk_ui_manager_get_widget(ui, "/popup"));
-+    ri.menu = (GtkMenu *)g_object_ref(gtk_ui_manager_get_widget(ui, "/popup"));
-     g_signal_connect(ri.menu, "selection-done", G_CALLBACK(gtk_widget_destroy), NULL);
-     unmap_handler = g_signal_connect(ri.menu, "unmap",
-                                      G_CALLBACK(run_unmap_handler), &ri);
diff --git a/pkgs/by-name/li/libfm/0004-create-icon-view.patch b/pkgs/by-name/li/libfm/0004-create-icon-view.patch
deleted file mode 100644
index 6a16b6446c896..0000000000000
--- a/pkgs/by-name/li/libfm/0004-create-icon-view.patch
+++ /dev/null
@@ -1,11 +0,0 @@
---- a/src/gtk/fm-standard-view.c
-+++ b/src/gtk/fm-standard-view.c
-@@ -637,7 +637,7 @@
-                                 "text", FM_FOLDER_MODEL_COL_NAME );
-     if(fv->renderer_text)
-         g_object_unref(fv->renderer_text);
--    fv->renderer_text = g_object_ref_sink(render);
-+    fv->renderer_text = (FmCellRendererText *)g_object_ref_sink(render);
-     exo_icon_view_set_search_column((ExoIconView*)fv->view, FM_FOLDER_MODEL_COL_NAME);
-     g_signal_connect(fv->view, "item-activated", G_CALLBACK(on_icon_view_item_activated), fv);
-     g_signal_connect(fv->view, "selection-changed", G_CALLBACK(on_sel_changed), fv);
diff --git a/pkgs/by-name/li/libfm/package.nix b/pkgs/by-name/li/libfm/package.nix
index d762036a22d07..4ced9fda207ac 100644
--- a/pkgs/by-name/li/libfm/package.nix
+++ b/pkgs/by-name/li/libfm/package.nix
@@ -2,6 +2,7 @@
   lib,
   stdenv,
   fetchurl,
+  fetchpatch,
   glib,
   intltool,
   menu-cache,
@@ -18,20 +19,21 @@ let
   gtk = if withGtk3 then gtk3 else gtk2;
   inherit (lib) optional optionalString;
 in
-stdenv.mkDerivation rec {
+stdenv.mkDerivation (finalAttrs: {
   pname = if extraOnly then "libfm-extra" else "libfm";
   version = "1.3.2";
 
   src = fetchurl {
-    url = "mirror://sourceforge/pcmanfm/libfm-${version}.tar.xz";
+    url = "mirror://sourceforge/pcmanfm/libfm-${finalAttrs.version}.tar.xz";
     sha256 = "sha256-pQQmMDBM+OXYz/nVZca9VG8ii0jJYBU+02ajTofK0eU=";
   };
 
   patches = [
-    ./0001-fm-load-all-actions.patch
-    ./0002-exo-icon-view-key-press-event.patch
-    ./0003-ask-action-on-drop.patch
-    ./0004-create-icon-view.patch
+    # Add casts to fix -Werror=incompatible-pointer-types
+    (fetchpatch {
+      url = "https://github.com/lxde/libfm/commit/fbcd183335729fa3e8dd6a837c13a23ff3271000.patch";
+      hash = "sha256-RbX8jkP/5ao6NWEnv8Pgy4zwZaiDsslGlRRWdoV3enA=";
+    })
   ];
 
   nativeBuildInputs = [
@@ -52,6 +54,11 @@ stdenv.mkDerivation rec {
 
   installFlags = [ "sysconfdir=${placeholder "out"}/etc" ];
 
+  postPatch = ''
+    # Ensure the files are re-generated from Vala sources.
+    rm src/actions/*.c
+  '';
+
   # libfm-extra is pulled in by menu-cache and thus leads to a collision for libfm
   postInstall = optionalString (!extraOnly) ''
     rm $out/lib/libfm-extra.so $out/lib/libfm-extra.so.* $out/lib/libfm-extra.la $out/lib/pkgconfig/libfm-extra.pc
@@ -59,12 +66,12 @@ stdenv.mkDerivation rec {
 
   enableParallelBuilding = true;
 
-  meta = with lib; {
+  meta = {
     broken = stdenv.hostPlatform.isDarwin;
     homepage = "https://blog.lxde.org/category/pcmanfm/";
-    license = licenses.lgpl21Plus;
+    license = lib.licenses.lgpl21Plus;
     description = "Glib-based library for file management";
-    maintainers = [ maintainers.ttuegel ];
-    platforms = platforms.linux ++ platforms.darwin;
+    maintainers = with lib.maintainers; [ ttuegel ];
+    platforms = lib.platforms.linux ++ lib.platforms.darwin;
   };
-}
+})