Set more up-to-date vim plugin for neuron

pkgs/vim/default.nix

@@ -68,6 +68,15 @@ let
       sha256 = "16pk2zscyiayfccn760p2zki4cjfhp26bikisgswjg900zwr5yns";
     };
   };
+  vim-neuron = buildVimPluginFrom2Nix {
+    name = "vim-neuron";
+    src = fetchFromGitHub {
+      owner = "fiatjaf";
+      repo = "neuron.vim";
+      rev = "2b4321bf12a4d0b589cd8c26aabb7e31311dab26";
+      sha256 = "0h8m72n4jdl9fa308wrchckn6xsbs3b5w8b0714qf9rdpg8jzwa6";
+    };
+  };
   vim-lilypond = buildVimPluginFrom2Nix { # created by nix#NixDerivation
     name = "vim-lilypond";
     src = "${pkgs.lilypond.outPath}/share/lilypond/${pkgs.lilypond.version}/vim";
@@ -86,7 +95,6 @@ let
         goyo
         gundo
         nerdtree
-        neuron-vim
         opencl-syntax
         repeat
         surround
@@ -99,6 +107,7 @@ let
         vim-hcl
         vim-ledger
         vim-lilypond
+        vim-neuron
         vim-nix
         vim-orgmode
         vim-selinux