Nix build fails: line 729: /build/makeself.khG0YkK0/zstd: cannot execute: required file not found

Start by reproducing the failure with ./result/bin/simula and inspect the NVIDIA driver extraction command around the reported makeself lines. Check why zstd cannot execute in the Nix build environment, then verify that the driver archive extracts successfully and Simula no longer reaches the Godot GLAD initialization errors.

It looks like the build fails due to some issue extracting the drivers

./result/bin/simula

building '/nix/store/jr8z5rmsmvwzpxff3kxm4y373c3n0591-impure-nvidia-version-file.drv'...
installing 'nixVulkanNvidia-530.30.02'
building '/nix/store/66sz1x97nvkf8akabmw9xhgzcff5j6f0-nvidia-530.30.02.drv'...
unpacking sources
Creating directory NVIDIA-Linux-x86_64-530.30.02
Verifying archive integrity... OK
Uncompressing NVIDIA Accelerated Graphics Driver for Linux-x86_64 530.30.02/nix/store/8zpy6cffgk57wb8vnpyas6c9x21bixmj-NVIDIA-Linux-x86_64-530.30.02.run: line 729: /build/makeself.khG0YkK0/zstd: cannot execute: required file not found
/nix/store/8zpy6cffgk57wb8vnpyas6c9x21bixmj-NVIDIA-Linux-x86_64-530.30.02.run: line 720: /dev/tty: No such device or address

Terminated
xz: (stdin): File format not recognized
tar: This does not look like a tar archive
tar: Exiting with failure status due to previous errors
error:
       … while calling the 'derivationStrict' builtin

         at //builtin/derivation.nix:9:12: (source not available)

       … while evaluating derivation 'nixVulkanNvidia-530.30.02'
         whose name attribute is located at /nix/store/hwis1dw4fzggwk2rdnajg4jirfhg84hx-nixpkgs-unstable/pkgs/stdenv/generic/make-derivation.nix:294:7

       … while evaluating attribute 'text' of derivation 'nixVulkanNvidia-530.30.02'

         at /nix/store/hwis1dw4fzggwk2rdnajg4jirfhg84hx-nixpkgs-unstable/pkgs/build-support/trivial-builders.nix:137:16:

          136|     runCommand name
          137|       { inherit text executable checkPhase meta;
             |                ^
          138|         passAsFile = [ "text" ];

       error: builder for '/nix/store/66sz1x97nvkf8akabmw9xhgzcff5j6f0-nvidia-530.30.02.drv' failed with exit code 2

Godot Engine v3.4.beta.custom_build - https://godotengine.org
ERROR: Condition "!fbc" is true. Returned: ERR_UNCONFIGURED
   at: initialize (platform/x11/context_gl_x11.cpp:154)
ERROR: Error initializing GLAD
   at: is_viable (drivers/gles3/rasterizer_gles3.cpp:141)