anchor.diff:  
     logging = mkDerivation {
       pluginName = "logging";
  -    src = fetchgit {
  -      url = "https://github.com/tmux-plugins/tmux-logging";
  -      rev = "b2706119cd587230beae02980d3d7fa2d5afebe9";
  -      sha256 = "1w1ymscfbz87lypaxgjdva1rg7jw2jyf7nnfgyngghw9m1l2xk2c";
  +    version = "unstable-2019-04-19";
  +    src = fetchFromGitHub {
  +      owner = "tmux-plugins";
  +      repo = "tmux-logging";
  +      rev = "b085ad423b5d59a2c8b8d71772352e7028b8e1d0";
  +      sha256 = "0p0sawysalhi8k2a5hdxniqx6kb24kd8rnvfzkjqigzid5ik37js";
       };
     };
   
     net-speed = mkDerivation {
       pluginName = "net-speed";
  -    src = fetchgit {
  -      url = "https://github.com/tmux-plugins/tmux-net-speed";
  -      rev = "536d2bdd053a3bdfcc5cf7680c0dba76127c95ca";
  -      sha256 = "1bly5f40dgiym378jkfwm7qag9xl6qvziqiqnj65yblqd5py325z";
  +    version = "unstable-2018-12-02";
  +    src = fetchFromGitHub {
  +      owner = "tmux-plugins";
  +      repo = "tmux-net-speed";
  +      rev = "58abb615971cb617821e2e7e41c660334f55a92d";
  +      sha256 = "1aj06gdhzcxsydjzf21n9kyxigwf38kh2rg8hh7gnjk260ydqlrc";
       };
     };
   
     maildir-counter = mkDerivation {
       pluginName = "maildir-counter";
  -    src = fetchgit {
  -      url = "https://github.com/tmux-plugins/tmux-maildir-counter";
  +    version = "unstable-2016-11-25";
  +    src = fetchFromGitHub {
  +      owner = "tmux-plugins";
  +      repo = "tmux-maildir-counter";
         rev = "9415f0207e71e37cbd870c9443426dbea6da78b9";
         sha256 = "0dwvqhiv9bjwr01hsi5c57n55jyv5ha5m5q1aqgglf4wyhbnfms4";
       };
  
positive.code:   vim-tmux-navigator = mkDerivation {
      pluginName = "vim-tmux-navigator";
      rtpFilePath = "vim-tmux-navigator.tmux";
      src = fetchgit {
        url = "https://github.com/christoomey/vim-tmux-navigator";
        rev = "4e1a877f51a17a961b8c2a285ee80aebf05ccf42";
        sha256 = "1b8sgbzl4pcpaabqk254n97mjz767ganrmqbsr6rqzz3j9a3s1fv";
      };
    };
  
    yank = mkDerivation {
      pluginName = "yank";
      src = fetchgit {
        url = "https://github.com/tmux-plugins/tmux-yank";
        rev = "feb9611b7d1c323ca54cd8a5111a53e3e8265b59";
        sha256 = "1ywbm09jfh6cm2m6gracmdc3pp5p2dwraalbhfaafqaydjr22qc3";
      };
    };
  
  
negative.code: 
    battery = mkDerivation {
      pluginName = "battery";
      version = "unstable-2019-07-04";
      src = fetchFromGitHub {
        owner = "tmux-plugins";
        repo = "tmux-battery";
        rev = "f8b8e8451990365e0c98c38c184962e4f83b793b";
        sha256 = "1bhdzsx3kdjqjmm1q4j8937lrpkzf71irr3fqhdbddsghwrrmwim";
      };
    };
  
    continuum = mkDerivation {
      pluginName = "continuum";
      version = "unstable-2018-02-23";
      src = fetchFromGitHub {
        owner = "tmux-plugins";
        repo = "tmux-continuum";
        rev = "1531b3770a7cf7373d15fedd239c5331b99342d1";
        sha256 = "1w3f7gzvv1k25yfr6d1snr2z88p8f87cahrbaslmyphdxpy0fa4m";
      };
      dependencies = [ resurrect ];
    };
  
    copycat = mkDerivation {
      pluginName = "copycat";
      version = "unstable-2020-01-09";
      src = fetchFromGitHub {
        owner = "tmux-plugins";
        repo = "tmux-copycat";
        rev = "77ca3aab2aed8ede3e2b941079b1c92dd221cf5f";
        sha256 = "1bchwzhai8k5rk32n4lrmh56rw944jqxr8imjk74hyaa7bbn81ds";
      };
    };
  
    cpu = mkDerivation {
      pluginName = "cpu";
      version = "unstable-2020-04-05";
      src = fetchFromGitHub {
        owner = "tmux-plugins";
        repo = "tmux-cpu";
        rev = "8858050756e1fc3c081d37894b441f05ea893a67";
        sha256 = "1bydzrnd9y5y46hjr844p4ylx2dpijn6pv3w94yyvwbyswmirhff";
      };
    };
  
    ctrlw = mkDerivation rec {
      pluginName = "ctrlw";
      version = "0.1.1";
      src = fetchFromGitHub {
        owner = "eraserhd";
        repo = "tmux-ctrlw";
        rev = "v${version}";
        sha256 = "1kv5pqfjczd6z7i9jf6j5xmcai50l9bn5p2p1w1l5fi6cj8cz1k1";
      };
    };
  
    fpp = mkDerivation {
      pluginName = "fpp";
      version = "unstable-2016-03-08";
      src = fetchFromGitHub {
        owner = "tmux-plugins";
        repo = "tmux-fpp";
        rev = "ca125d5a9c80bb156ac114ac3f3d5951a795c80e";
        sha256 = "1b89s6mfzifi7s5iwf22w7niddpq28w48nmqqy00dv38z4yga5ws";
      };
  