add dev editor

dev/nvim-ts.nix

@@ -0,0 +1,31 @@
+{ pkgs ? import <nixpkgs> { } }:
+
+let
+  d2-vim = pkgs.vimUtils.buildVimPluginFrom2Nix {
+    name = "d2-vim";
+    src = pkgs.fetchFromGitHub {
+      owner = "terrastruct";
+      repo = "d2-vim";
+      rev = "ac58c07ba192d215cbbd2b2207f9def808a9283d";
+      hash = "sha256-rXUhXVmva4K0PqUboSXUpTqNttwehjkjjsEgTCZbGKI=";
+    };
+  };
+
+  neovim = pkgs.neovim.override {
+    configure = {
+      customRC = ''
+        source ${./vimrc.vim}
+      '';
+
+      packages.myPlugins.start = with pkgs.vimPlugins; [
+        d2-vim
+        nvim-treesitter
+      ];
+    };
+  };
+
+in
+pkgs.runCommand "nvim-ts" { } ''
+  mkdir -p $out/bin
+  ln -s ${neovim}/bin/nvim $out/bin/nvim-ts
+''

dev/vimrc.vim

@@ -0,0 +1,15 @@
+" Basic settings for tests
+set mouse=a
+set number
+set cursorline
+set expandtab
+set shiftwidth=2
+set softtabstop=-1
+set signcolumn=yes
+set completeopt=menuone,noselect
+set ttimeoutlen=1
+set autoindent
+
+" Always show statusline.
+set laststatus=2
+set statusline=%<%f\ %m%r%y\ %LL\ %=\ 0x%-4.B\ %-16.(%lL,%cC%V,%oB%)\ %P

flake.nix

@@ -18,6 +18,7 @@
             nodePackages.eslint
             nodePackages.prettier
             nodePackages.vscode-langservers-extracted # html, css, json, eslint
+            (import ./dev/nvim-ts.nix { inherit pkgs; })
           ];
         };
       });