binwalk: Failed to import matplotlib module

[asbachb]

To Reproduce
Steps to reproduce the behavior:

[nix-shell:~/Downloads]$ binwalk -E GH4__V27.bin 

WARNING: Failed to import matplotlib module, visual entropy graphing will be disabled

DECIMAL       HEXADECIMAL     ENTROPY
--------------------------------------------------------------------------------
0             0x0             Rising entropy edge (0.971057)

Expected behavior
A graph to be shown.

Notify maintainers
@flokli

Metadata

[nix-shell:~/Downloads]$ nix-shell -p nix-info --run "nix-info -m"
 - system: `"x86_64-linux"`
 - host os: `Linux 5.4.58, NixOS, 20.03.2791.05195accdc5 (Markhor)`
 - multi-user?: `yes`
 - sandbox: `yes`
 - version: `nix-env (Nix) 2.3.6`
 - channels(asbachb): `""`
 - channels(root): `"nixos-20.03.2791.05195accdc5, nixos-unstable-20.09pre231796.22a81aa5fc1"`
 - nixpkgs: `/nix/var/nix/profiles/per-user/root/channels/nixos`

Maintainer information:

# a list of nixpkgs attributes affected by the problem
attribute:
* python38Packages.binwalk-full
* python38Packages.binwalk
# a list of nixos modules affected by the problem
module: 

[flokli]

Opened #95580 fixing this, PTAL.