Fix malloc errors!

flake.nix

@@ -3,16 +3,21 @@
     nixpkgs.url = "github:nixos/nixpkgs";
   };
 
-  outputs = { self, nixpkgs }: let
+  outputs = {
+    self,
+    nixpkgs,
+  }: let
     inherit (nixpkgs) lib;
     systems = ["x86_64-linux"];
-    eachSystem = f: lib.genAttrs systems (system: f {
-      inherit system;
-      pkgs = nixpkgs.legacyPackages.${system};
-      ownPkgs = self.packages.${system};
-    });
+    eachSystem = f:
+      lib.genAttrs systems (system:
+        f {
+          inherit system;
+          pkgs = nixpkgs.legacyPackages.${system};
+          ownPkgs = self.packages.${system};
+        });
   in {
-    packages = eachSystem ({ pkgs, ... }: {
+    packages = eachSystem ({pkgs, ...}: {
       default = pkgs.rustPlatform.buildRustPackage (final: {
         pname = "zathura-typst";
         version = "0.1.0";
@@ -48,10 +53,22 @@
       });
     });
 
-    devShells = eachSystem ({ pkgs, ownPkgs, ... }: {
+    devShells = eachSystem ({
+      pkgs,
+      ownPkgs,
+      ...
+    }: {
       default = pkgs.mkShell {
         inputsFrom = [ownPkgs.default];
-        packages = [pkgs.rust-analyzer pkgs.clippy pkgs.rustfmt pkgs.gdb];
+        packages = [
+          pkgs.rust-analyzer
+          pkgs.clippy
+          pkgs.rustfmt
+          pkgs.gdb
+          (pkgs.zathuraPkgs.zathura_core.overrideAttrs {
+            mesonBuildType = "debug";
+          })
+        ];
         LIBCLANG_PATH = "${pkgs.llvmPackages.libclang.lib}/lib";
         shellHook = ''
           # From: https://github.com/NixOS/nixpkgs/blob/1fab95f5190d087e66a3502481e34e15d62090aa/pkgs/applications/networking/browsers/firefox/common.nix#L247-L253