home: Add neovim

users/simon/base.nix

@@ -37,6 +37,7 @@ in
       ./modules/htop.nix
       ./modules/misc.nix
       ./modules/mpd.nix
+      ./modules/neovim.nix
       ./modules/sway.nix
       ./modules/xcompose.nix
       ./modules/xdg.nix

users/simon/files/nvim/UltiSnips/rust.snippets

@@ -0,0 +1,7 @@
+snippet disp "Display trait implentation"
+impl fmt::Display for ${1:Struct} {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        write!(f, "${2}", ${3})
+    }
+}${0}
+endsnippet

users/simon/files/nvim/UltiSnips/tex.snippets

@@ -0,0 +1,19 @@
+extends tex
+
+snippet s "Section" b
+\section{$1}
+
+
+endsnippet
+
+snippet ss "Subsection" b
+\subsection{$1}
+
+
+endsnippet
+
+snippet sss "Subsubsection" b
+\subsubsection{$1}
+
+
+endsnippet

users/simon/files/nvim/UltiSnips/texmath.snippets

@@ -0,0 +1,23 @@
+extends texmath
+
+snippet qf "Quadratic formula (user is responsible for parentheses)" w
+\frac{-${2:b} \pm \sqrt{$2^2 - 4 \cdot ${1:a} \cdot ${3:c}}}{2 \cdot $1}$0
+endsnippet
+
+snippet aligned "aligned environment (in math mode)" w
+\begin{aligned}
+ $1 &= $0 \\\\
+\end{aligned}
+endsnippet
+
+snippet si "Insert SI unit (only works with simple numbers)" w
+\SI{${1:amount}}{${2:unit}}
+endsnippet
+
+snippet · "Insert multiplication sign" A
+\cdot $0
+endsnippet
+
+snippet // "Fraction" iA
+\frac{$1}{$2}$0
+endsnippet

users/simon/modules/neovim.nix

@@ -0,0 +1,234 @@
+{ config, pkgs, ... }:
+let
+  languageClientSettings = pkgs.writeText "LanguageClient.json" (builtins.toJSON {
+    rust.clippy_preference = "on";
+  });
+  rainbow_csv = pkgs.vimUtils.buildVimPluginFrom2Nix rec {
+    name = "rainbow_csv";
+    src = pkgs.fetchFromGitHub {
+      owner = "mechatroner";
+      repo = name;
+      rev = "df89266d6c03479def77793fd7a0a651986865a5";
+      sha256 = "0c9b1r49vw6r3yhm6g02janyxw6d9j6bkjmv8zpdav46avmk74fh";
+    };
+  };
+  vim-openscad = pkgs.vimUtils.buildVimPluginFrom2Nix rec {
+    name = "vim-openscad";
+    src = pkgs.fetchFromGitHub {
+      owner = "sirtaj";
+      repo = name;
+      rev = "81db508b1888fdbea994d43ccef1acd86c8af3f7";
+      sha256 = "1wcdfayjpb9h0lzwdi5nda4c0ch263fdr0379l9k1gf47bgq9cx2";
+    };
+  };
+  Vim-Jinja2-Syntax = pkgs.vimUtils.buildVimPluginFrom2Nix rec {
+    name = "Vim-Jinja2-Syntax";
+    src = pkgs.fetchFromGitHub {
+      owner = "Glench";
+      repo = name;
+      rev = "5d2496eb5fd4415c7ce062ccbcd53a3f0de93aa3";
+      sha256 = "1ss065b2psalli46bs3v13fhaplqydh13bg3jg3zr98wbdn70cws";
+    };
+  };
+in
+{
+  programs.neovim = {
+    enable = true;
+    extraConfig = ''
+      " Basic display
+      set number
+      set colorcolumn=80
+
+      " Persistent undo
+      set undofile
+      set undolevels=4096
+      set undoreload=16384
+
+      " Search
+      set ignorecase
+
+      " Hide search when enter is pressed
+      nnoremap <silent> <CR> :nohlsearch<CR>
+
+      " Autoload settings from file
+      set modeline
+
+      " Use system clipboard
+      set clipboard=unnamedplus
+
+      " Support more file encodings
+      set fileencodings=ucs-bom,utf-8,default,sjis,latin1
+
+      " Scroll before reaching top/bottom
+      set scrolloff=5
+
+      " Conceal when line is not active
+      set conceallevel=1
+
+      " Just hide buffer instead of unloading
+      set hidden
+
+      " Remap leader key
+      let mapleader = ","
+
+      " Jump to the last position
+      au BufReadPost * if line("'\"") > 0 && line("'\"") <= line("$")
+        \| exe "normal! g`\"" | endif
+
+      set background=dark
+      silent! colorscheme solarized
+
+      " Set unknown filetypes
+      autocmd BufRead,BufNewFile *.vpy  set filetype=python
+
+      " Filetype specific properties
+      autocmd Filetype arduino setlocal ts=2 sw=2 sts=2 expandtab
+      autocmd Filetype c setlocal ts=4 sw=4 sts=4 expandtab
+      autocmd Filetype cpp setlocal ts=4 sw=4 sts=4 expandtab
+      autocmd Filetype css setlocal ts=2 sw=2 sts=2 expandtab
+      autocmd Filetype dockerfile setlocal ts=4 sw=4 sts=4 expandtab
+      autocmd Filetype dot setlocal ts=2 sw=2 sts=2 expandtab
+      autocmd Filetype gitcommit setlocal colorcolumn=72
+      autocmd Filetype go setlocal ts=4 sw=4 sts=4
+      autocmd Filetype haskell setlocal ts=4 sw=4 sts=4 expandtab
+      autocmd Filetype html setlocal ts=2 sw=2 sts=2 expandtab
+      autocmd Filetype jinja.html setlocal ts=2 sw=2 sts=2 expandtab
+      autocmd Filetype javascript setlocal ts=2 sw=2 sts=2 expandtab
+      autocmd Filetype jinja setlocal ts=2 sw=2 sts=2 expandtab
+      autocmd Filetype json setlocal ts=2 sw=2 sts=2 expandtab
+      autocmd Filetype lua setlocal ts=4 sw=4 sts=4 expandtab
+      autocmd Filetype markdown setlocal ts=2 sw=2 sts=2 expandtab
+      autocmd Filetype openscad setlocal ts=2 sw=2 sts=2 expandtab
+      autocmd Filetype python setlocal ts=4 sw=4 sts=4 expandtab
+      autocmd Filetype sass setlocal ts=2 sw=2 sts=2 expandtab
+      autocmd Filetype scss setlocal ts=2 sw=2 sts=2 expandtab
+      autocmd Filetype sh setlocal ts=4 sw=4 sts=4
+      autocmd Filetype tex setlocal ts=1 sw=1 sts=1 expandtab
+      autocmd Filetype toml setlocal ts=2 sw=2 sts=2 expandtab
+      autocmd Filetype vim setlocal ts=2 sw=2 sts=2 expandtab
+      autocmd Filetype vue setlocal ts=2 sw=2 sts=2 expandtab
+      autocmd Filetype xml setlocal ts=2 sw=2 sts=2 expandtab
+      autocmd Filetype yaml setlocal ts=2 sw=2 sts=2 expandtab
+      autocmd Filetype zsh setlocal ts=4 sw=4 sts=4 expandtab
+    '';
+    plugins = (with pkgs.vimPlugins; [
+      {
+        plugin = LanguageClient-neovim;
+        config = ''
+          let g:LanguageClient_serverCommands = {
+              \ 'rust': ['rustup', 'run', 'stable', 'rls'],
+              \ 'go': ['${pkgs.gopls}/bin/gopls'],
+              \ 'python': ['${pkgs.python3Packages.python-language-server}/bin/pyls'],
+              \ 'typescript': ['${pkgs.nodePackages.javascript-typescript-langserver}/bin/javascript-typescript-stdio'],
+              \ 'javascript': ['${pkgs.nodePackages.javascript-typescript-langserver}/bin/javascript-typescript-stdio'],
+              \ 'haskell': ['${pkgs.haskellPackages.haskell-language-server}/bin/haskell-language-server', '--lsp'],
+              \ }
+
+          let g:LanguageClient_loggingFile = '${config.xdg.dataHome}/nvim/LanguageClient.log'
+          let g:LanguageClient_settingsPath = '${languageClientSettings}'
+
+          function LC_maps()
+            if has_key(g:LanguageClient_serverCommands, &filetype)
+              nnoremap <buffer> <silent> <F5> :call LanguageClient_contextMenu()<CR>
+              nnoremap <buffer> <silent> K :call LanguageClient#textDocument_hover()<CR>
+              nnoremap <buffer> <silent> gd :call LanguageClient#textDocument_definition()<CR>
+              nnoremap <buffer> <silent> <F2> :call LanguageClient#textDocument_rename()<CR>
+              set formatexpr=LanguageClient#textDocument_rangeFormatting_sync()
+            endif
+          endfunction
+
+          autocmd FileType * call LC_maps()
+        '';
+      }
+      {
+        plugin = deoplete-nvim;
+        config = ''
+          let g:deoplete#enable_at_startup = 1
+        '';
+      }
+      editorconfig-vim
+      fzf-vim
+      {
+        plugin = nerdtree;
+        config = ''
+          map <Leader>N :NERDTreeTabsToggle<CR>
+          map <Leader>n :NERDTreeFocusToggle<CR>
+        '';
+      }
+      nerdtree-git-plugin
+      {
+        plugin = rust-vim;
+        config = ''
+          let g:rustfmt_autosave_if_config_present = 1
+          let g:rust_fold = 1
+          map <Leader>rt :RustTest<CR>
+        '';
+      }
+      {
+        plugin = tagbar;
+        config = "nmap <F8> :TagbarToggle<CR>";
+      }
+      {
+        plugin = ultisnips;
+        config = ''
+          let g:UltiSnipsExpandTrigger = '<tab>'
+          let g:UltiSnipsJumpForwardTrigger = '<tab>'
+          let g:UltiSnipsJumpBackwardTrigger = '<s-tab>'
+        '';
+      }
+      {
+        plugin = vim-airline;
+        config = ''
+          let g:airline_powerline_fonts = 1
+          let g:airline_solarized_bg='dark'
+          let g:airline_theme='solarized'
+        '';
+      }
+      vim-airline-themes
+      vim-better-whitespace
+      vim-colors-solarized
+      vim-devicons
+      vim-fugitive
+      vim-nerdtree-tabs
+      vim-nix
+      vim-snippets
+      vim-toml
+      {
+        plugin = vimtex;
+        config = ''
+          let g:tex_flavor='latex'
+          let g:vimtex_view_method='zathura'
+          let g:tex_conceal='abdmg'
+          let g:vimtex_syntax_autoload_packages = [
+            \'amsmath',
+            \'luacode',
+            \]
+          " this disables some helful warnings that often have a reason why I ignore them
+          let g:vimtex_quickfix_ignore_filters = [
+            \'Underfull \\hbox (badness [0-9]*) in ',
+            \'Overfull \\hbox ([0-9]*.[0-9]*pt too wide) in ',
+            \'Overfull \\vbox ([0-9]*.[0-9]*pt too high) detected ',
+            \'Package hyperref Warning: Token not allowed in a PDF string',
+            \'Package typearea Warning: Bad type area settings!',
+            \]
+          " When using math environments vim does not know if if it currently is in one
+          " or outside of one unless it parses the file from the start. Parsing the
+          " file from the start each time fixes this but leads to a performance drop
+          " (depending on the number of lines).
+          " Also, somehow using FileType tex does not work, so this will enable slow
+          " syntax highlighting everywhere once a *.tex file is opened.
+          autocmd BufEnter *.tex syntax sync fromstart
+        '';
+      }
+    ]) ++ [
+      Vim-Jinja2-Syntax
+      rainbow_csv
+      vim-openscad
+    ];
+    # TODO: add psf/black
+  };
+
+  xdg.configFile = {
+    "nvim/UltiSnips".source = ../files/nvim/UltiSnips;
+  };
+}