anchor.diff: -{ lib, stdenv, fetchurl, perl, read-edid }:
  +{ lib
  +, stdenv
  +, fetchgit
  +, perl
  +, read-edid
  +}:
   
   stdenv.mkDerivation rec {
     pname = "i2c-tools";
     version = "4.2";
   
  -  src = fetchurl {
  -    url = "https://www.kernel.org/pub/software/utils/i2c-tools/${pname}-${version}.tar.xz";
  -    sha256 = "1mmc1n8awl3winyrp1rcxg94vjsx9dc1y7gj7y88blc2f2ydmwip";
  +  src = fetchgit {
  +    url = "https://git.kernel.org/pub/scm/utils/i2c-tools/i2c-tools.git";
  +    rev = "v${version}";
  +    sha256 = "0vqrbp10klr7ylarr6cy1q7nafiqaky4iq5my5dqy101h93vg4pg";
     };
   
     buildInputs = [ perl ];
  
positive.code: 
    makeFlags = [ "PREFIX=${placeholder "out"}" ];
  
    postInstall = ''
      rm -rf $out/include # Installs include/linux/i2c-dev.h that conflics with kernel headers
    '';
  
negative.code:   meta = with lib; {
      description = "Set of I2C tools for Linux";
      homepage = "https://i2c.wiki.kernel.org/index.php/I2C_Tools";
      # library is LGPL 2.1 or later; "most tools" GPL 2 or later
      license = with licenses; [ lgpl21Plus gpl2Plus ];
      maintainers = [ maintainers.dezgeg ];
      platforms = platforms.linux;
    };
  