configure nvim via nix

nix/home.nix

@@ -10,7 +10,7 @@ in
     ./progs/git.nix
     ./progs/pass.nix
     ./progs/himalaya.nix
-    ./progs/nvim.nix
+    ./progs/nvim
     ./progs/exa.nix
     ./progs/zoxide.nix
     ./progs/hledger.nix

nix/progs/nvim.nix

@@ -1,37 +0,0 @@
-{ lib, config, pkgs, ... }:
-
-with lib;
-
-let
-  cfg = config.progs.nvim;
-  bin = "nvim";
-in
-{
-  options.progs.nvim = {
-    enable = mkOption {
-      type = types.bool;
-      default = false;
-      description = "Add and configure exa, a modern replacement for ls";
-    };
-
-    default = mkOption {
-      type = types.bool;
-      default = false;
-      description = "Set neovim as default editor";
-    };
-  };
-  
-  config = mkIf cfg.enable {
-    # TODO: install and configure neovim from home-manager
-
-    home.sessionVariables = mkIf cfg.default {
-      EDITOR = bin;
-    };
-
-    programs.zsh.shellAliases = mkIf config.shell.zsh.enable {
-      vi = bin;
-      vim = bin;
-    };
-  };
-}
-

nix/progs/nvim/coc.vim

@@ -0,0 +1,42 @@
+" Smaller updatetime for CursorHold & CursorHoldI
+set updatetime=300
+
+" don't give |ins-completion-menu| messages.
+set shortmess+=c
+
+" always show signcolumns
+set signcolumn=yes
+
+" Some server have issues with backup files, see coc#649
+set nobackup
+set nowritebackup
+
+" Better display for messages
+set cmdheight=2
+
+" Use <c-space> for trigger completion.
+inoremap <silent><expr> <c-space> coc#refresh()
+
+" Use <cr> for confirm completion, `<C-g>u` means break undo chain at current
+" position. Coc only does snippet and additional edit on confirm.
+inoremap <expr> <cr> pumvisible() ? "\<C-y>" : "\<C-g>u\<CR>"
+
+" Use `[g` and `]g` for navigate diagnostics
+nmap <silent> [g <Plug>(coc-diagnostic-prev)
+nmap <silent> ]g <Plug>(coc-diagnostic-next)
+
+" Remap keys for gotos
+nmap <silent> gd <Plug>(coc-definition)
+nmap <silent> gt <Plug>(coc-type-definition)
+nmap <silent> gi <Plug>(coc-implementation)
+nmap <silent> gr <Plug>(coc-references)
+
+" Remap for do code action of current line
+nmap <leader>la <Plug>(coc-codeaction)
+
+" Remap for rename current word
+nmap <leader>ln <Plug>(coc-rename)
+
+" Remap for do action format
+nnoremap <silent> F :call CocAction('format')<CR>
+

nix/progs/nvim/coc_settings.nix

@@ -0,0 +1,24 @@
+{
+  languageserver = {
+    nix = {
+      command = "rnix-lsp";
+      filetypes = ["nix"];
+    };
+
+    haskell = {
+      command = "haskell-language-server-wrapper";
+      args = ["--lsp"];
+      rootPatterns = [
+        "stack.yaml"
+        ".cabal"
+        "cabal.project"
+        "package.yaml"
+      ];
+      filetypes = [
+        "hs"
+        "lhs"
+        "haskell"
+      ];
+    };
+  };
+}

nix/progs/nvim/config.vim

@@ -0,0 +1,99 @@
+" Basic settings {{{
+filetype off
+
+" Leaders
+let g:mapleader = ','
+let g:maplocalleader = '-'
+
+" Better Unix support
+set viewoptions=folds,options,cursor,unix,slash
+set encoding=utf-8
+
+" True color support
+set termguicolors
+
+" Theme (required plugin 'material-vim')
+"let g:material_theme_style = 'default' | 'palenight' | 'ocean' | 'lighter' | 'darker' | 'default-community' | 'palenight-community' | 'ocean-community' | 'lighter-community' | 'darker-community'
+let g:material_theme_style = 'ocean-community'
+let g:lightline = { 'colorscheme': 'material_vim' }
+colorscheme material
+
+" Other options
+syntax on
+set backspace=2
+set laststatus=2
+set noshowmode
+
+" Tabs as spaces
+set expandtab
+set tabstop=2
+set softtabstop=2
+set shiftwidth=2
+
+" Clear search highlighting
+nnoremap <C-z> :nohlsearch<CR>
+
+" Fixes broken cursor on Linux
+set guicursor=
+
+" General editor options
+set hidden        " Hide files when leaving them.
+set number        " Show line numbers.
+set numberwidth=1 " Minimum line number column width.
+set cmdheight=2   " Number of screen lines to use for the commandline.
+set textwidth=0   " Lines length limit (0 if no limit).
+set linebreak     " Don't cut lines in the middle of a work.
+set showmatch     " Show matching parenthesis.
+set matchtime=2   " Time during which the matching parenthesis is shown.
+set formatoptions=jtcrq     " Sensible default line auto cutting and formatting.
+set listchars=tab:▸\ ,eol:¬ " Invisible characters representation when :set list.
+set clipboard=unnamedplus   " Copy/Past to/from clipboard
+set cursorline              " Highlight line cursor is currently on
+set completeopt+=noinsert   " Select the first item of popup menu automatically without inserting it
+
+" Search
+set incsearch     " Incremental search.
+set ignorecase    " Case insensitive.
+set smartcase     " Case insensitive if no uppercase letter in pattern, case sensitive otherwise
+
+" Spell check for markdown files
+au BufNewFile,BufRead *.md set spell
+
+" Disable arrow keys and page up / down
+noremap <Up> <nop>
+noremap <Down> <nop>
+noremap <Left> <nop>
+noremap <Right> <nop>
+inoremap <Up> <nop>
+inoremap <Down> <nop>
+inoremap <Left> <nop>
+inoremap <Right> <nop>
+vnoremap <Up> <nop>
+vnoremap <Down> <nop>
+vnoremap <Left> <nop>
+vnoremap <Right> <nop>
+noremap <PageUp> <nop>
+inoremap <PageUp> <nop>
+vnoremap <PageUp> <nop>
+noremap <PageDown> <nop>
+inoremap <PageDown> <nop>
+vnoremap <PageDown> <nop>
+
+" Disable mouse / touchpad (only in vim)
+set mouse=nicr
+inoremap <ScrollWheelUp> <nop>
+inoremap <S-ScrollWheelUp> <nop>
+inoremap <C-ScrollWheelUp> <nop>
+inoremap <ScrollWheelDown> <nop>
+inoremap <S-ScrollWheelDown> <nop>
+inoremap <C-ScrollWheelDown> <nop>
+inoremap <ScrollWheelLeft> <nop>
+inoremap <S-ScrollWheelLeft> <nop>
+inoremap <C-ScrollWheelLeft> <nop>
+inoremap <ScrollWheelRight> <nop>
+inoremap <S-ScrollWheelRight> <nop>
+inoremap <C-ScrollWheelRight> <nop>
+
+" Incremental substitutin
+set inccommand=split
+

nix/progs/nvim/custom_plugins.nix

@@ -0,0 +1,12 @@
+{ buildVimPlugin }:
+
+{
+  material-vim = buildVimPlugin {
+    name = "material-vim";
+    src = builtins.fetchTarball {
+      name   = "material-vim-2021-12-10";
+      url    = "https://github.com/kaicataldo/material.vim/archive/445534b2db7f7ec3dc088eae21c86ff0e9bb19de.tar.gz";
+      sha256 = "1lwlr6haj1damzmk6i6a1la7vql4y1wmb62iqvm6xgy2svr0s36i";
+    };
+  };
+}

nix/progs/nvim/default.nix

@@ -0,0 +1,82 @@
+{ lib, config, pkgs, ... }:
+
+with lib;
+
+let
+  cfg = config.progs.nvim;
+
+  customPlugins = pkgs.callPackage ./custom_plugins.nix {
+    inherit (pkgs.vimUtils) buildVimPlugin;
+  };
+
+  plugins = pkgs.vimPlugins // customPlugins;
+
+  myVimPlugins = with plugins; [
+    coc-nvim              # LSP client + autocompletion plugin
+    coc-tsserver          # typescript LSP
+    coc-eslint            # eslint LSP
+
+    editorconfig-vim      # use project .editorconfig to configure editor
+    lightline-vim         # configurable status line
+    material-vim          # modern theme with true colors support
+    vim-nix               # nix support
+    vim-easymotion        # highlights keys to move quickly
+    nerdtree              # tree explorer
+    nerdtree-git-plugin   # shows files git status on the NerdTree
+    neoformat             # formating code
+    nvim-treesitter       # treesitter configurations and abstraction layer
+  ];
+
+  # Additional language servers that we should install mannually
+  lspPackages = with pkgs; [
+    rnix-lsp
+  ];
+
+  baseConfig = builtins.readFile ./config.vim;
+  pluginsConfig = builtins.readFile ./plugins.vim;
+  cocConfig = builtins.readFile ./coc.vim;
+  cocSettings = builtins.toJSON (import ./coc_settings.nix);
+
+  vimConfig = baseConfig + pluginsConfig + cocConfig;
+in
+{
+  options.progs.nvim = {
+    enable = mkOption {
+      type = types.bool;
+      default = false;
+      description = "Add and configure exa, a modern replacement for ls";
+    };
+
+    default = mkOption {
+      type = types.bool;
+      default = false;
+      description = "Set neovim as default editor";
+    };
+  };
+  
+  config = mkIf cfg.enable {
+    home.packages = lspPackages;
+      
+    programs.neovim = {
+      enable = true;
+      extraConfig = vimConfig;
+      plugins = myVimPlugins;
+      viAlias = true;
+      vimAlias = true;
+    };
+
+    xdg.configFile = {
+      "nvim/coc-settings.json".text = cocSettings;
+    };
+
+    # home.sessionVariables = mkIf cfg.default {
+    #   EDITOR = bin;
+    # };
+
+    # programs.zsh.shellAliases = mkIf config.shell.zsh.enable {
+    #   vi = bin;
+    #   vim = bin;
+    # };
+  };
+}
+

nix/progs/nvim/nvim_nightly.nix

@@ -0,0 +1,17 @@
+{ pkgs }:
+
+pkgs.neovim-unwrapped.overrideAttrs (
+  old: {
+    name    = "neovim-nightly";
+    version = "nightly";
+
+    src = pkgs.fetchFromGitHub {
+      owner  = "neovim";
+      repo   = "neovim";
+      rev    = "f17d88c47a6a647f2230a61e7cd952926abc4473";
+      sha256 = "0lgbf90sbachdag1zm9pmnlbn35964l3khs27qy4462qzpqyi9fi";
+    };
+
+    buildInputs = old.buildInputs ++ [ pkgs.tree-sitter ];
+  }
+)

nix/progs/nvim/plugins.vim

@@ -0,0 +1,32 @@
+" Nerdtree 
+
+noremap <leader>nt :NERDTreeToggle<CR>
+noremap <leader>nf :NERDTreeFind<CR>
+
+let g:NERDTreeDirArrowExpandable = '▸'
+let g:NERDTreeDriArrowCollapsible = '▾'
+
+let g:NERDTreeMiniamlUI = 1
+let g:NERDTreeDirArrows = 1
+
+" Nerdtree git plugin symbols
+let g:NERDTreeGitStatusIndicatorMapCustom = {
+    \ "Modified"  : "ᵐ",
+    \ "Staged"    : "ˢ",
+    \ "Untracked" : "ᵘ",
+    \ "Renamed"   : "ʳ",
+    \ "Unmerged"  : "ᶴ",
+    \ "Deleted"   : "ˣ",
+    \ "Dirty"     : "˜",
+    \ "Clean"     : "ᵅ",
+    \ "Unknown"   : "?"
+    \ }
+
+" NeoFormat
+let g:neoformat_try_node_exe = 1
+let g:neoformat_only_msg_on_error = 1
+let g:neoformat_enabled_markdown = ["denofmt"]
+aug fmt
+  au!
+  au BufWritePre * try | undojoin | Neoformat | catch /E790/ | Neoformat | endtry
+aug END