anyway I did this, but I don't think it's a good solution even for a temporary package

let
  pkgs = import <nixpkgs-unstable> { };
in pkgs.mkShell rec {

  buildInputs = [
    (pkgs.callPackage ./. { })
  ];
}

anyway I did this, but I don't think it's a good solution even for a temporary shell

let
  pkgs = import <nixpkgs-unstable> { };
in pkgs.mkShell rec {

  buildInputs = [
    (pkgs.callPackage ./. { })
  ];
}

anyway I did this, but I don't think it's a good solution even for a temporary shell

let
  pkgs = import <nixpkgs-unstable> { };
in pkgs.mkShell rec {
  buildInputs = [
    (pkgs.callPackage ./. { })
  ];
}

Hi folks, I am trying to understand how to actually build a module with buildGoModule. I have tried, for example:
nix-build '<nixpkgs>' ./shell.nix
result:

nix-build '<nixpkgs>' ./shell.nix
error: Please be informed that this pseudo-package is not the only part of
       Nixpkgs that fails to evaluate. You should not evaluate entire Nixpkgs
       without some special measures to handle failing packages, like those taken
       by Hydra.

where shell.nix is:

  1 {·lib↵                                                                          
  2 ,·buildGoModule↵                                                                
  3 ,·fetchFromGitHub↵                                                              
  4 }:↵                                                                             
  5 ↵                                                                               
  6 buildGoModule·rec·{↵                                                            
  7 ··pname·=·"signASLbot";↵                                                        
  8 ··#version·=·"1.1.6";↵                                                          
  9 ↵                                                                               
 10 ··src·=·fetchFromGitHub·{↵                                                      
 11 ····owner·=·"mplsbugbounty";↵                                                   
 12 ····repo·=·pname;↵                                                              
 13 ···#·rev·=·"v${version}";↵                                                      
 14 ···#·sha256·=·"sha256-1EnKheHaS1kxw0cjxCahT3rUWBXiqxjKefrDBI2xIvY=";↵           
 15 ··};↵                                                                           
 16 ↵                                                                               
 17 ··#vendorHash·=·"sha256-egjjSEZH8F6UMbnkz3xytIzdW/oITB3RL1ddxrmvSZM=";↵         
 18 ↵                                                                               
 19 ··#·tests·require·internet·access·and·API·keys↵                                 
 20 ··doCheck·=·false;↵                                                             
 21 ↵                                                                               
 22 ··meta·=·with·lib;·{↵                                                           
 23 ····description·=·"";↵                                                          
 24 ····longDescription·=·''↵                                                       
 25 →       It's·a·pretty·basic·little·bot·really!↵                                 
 26 ····'';↵                                                                        
 27 ····homepage·=·"https://github.com/mplsbugbounty/signASLBot";↵                  
 28 ····#license·=·licenses.mit;↵                                                   
 29 ····#maintainers·=·with·maintainers;·[·fab·];↵                                  
 30 ··};↵                                                                           
 31 }↵