feat(nvim): add latex support

common/home/neovim/langs/markdown.nix

@@ -16,10 +16,49 @@
 in
   lib.mkIf neovimIde {
     programs = {
-      neovim = {
-        plugins = [
-          vimPlugins.markdown-preview-nvim
+      # TODO: add syntax highlighting for markdown
+      sioyek = {
+        enable = true;
 
+        config = let
+          # TODO: put this with the rest of the themes
+          dracula-theme = pkgs.fetchFromGitHub {
+            owner = "dracula";
+            repo = "sioyek";
+            rev = "b832ab04d880fbe243c0fe9043612be61226426e";
+            hash = "sha256-+HzxZA8Bb+cGogK+w4JES4ZFG+ueXEAuLu+0T18fvbc=";
+          };
+        in {
+          startup_commands = "toggle_custom_color";
+          # TODO: make sure the font is applied
+          ui_font = "JetBrainsMono Nerd Font Mono Regular";
+          font_size = "24";
+          source = "${dracula-theme}/dracula.config";
+        };
+      };
+
+      neovim = {
+        extraPackages = [
+          pkgs.pandoc
+
+          # LaTeX packages
+          pkgs.texlab
+          pkgs.texliveFull
+          pkgs.rubber
+        ];
+
+        extraLuaConfig =
+          /*
+          lua
+          */
+          ''
+            local lsp = require('lspconfig');
+            local coq = require('coq');
+
+            lsp.texlab.setup(coq.lsp_ensure_capabilities({}));
+          '';
+
+        plugins = [
           {
             plugin = buildPlugin "easytables-nvim" vimplugin-easytables-src;
             type = "lua";
@@ -31,6 +70,69 @@ in
                 require('easytables').setup();
               '';
           }
+
+          {
+            plugin = vimPlugins.knap;
+            type = "lua";
+            config =
+              /*
+              lua
+              */
+              ''
+                local gknapsettings = {
+                    -- HTML
+                    htmloutputext = "html",
+                    htmltohtml = "none",
+                    htmltohtmlviewerlaunch = "",
+                    htmltohtmlviewerrefresh = "none",
+
+                    -- Markdown
+                    mdoutputext = 'pdf',
+                    markdownoutputext = 'pdf',
+                    mdtopdf = 'pandoc %docroot% -o /tmp/%outputfile%',
+                    markdowntopdf = "pandoc %docroot% -o /tmp/%outputfile%",
+                    mdtopdfviewerlaunch = 'sioyek /tmp/%outputfile%',
+                    markdowntopdfviewerlaunch = "sioyek /tmp/%outputfile%",
+                    mdtopdfviewerrefresh = 'none',
+                    markdowntopdfviewerrefresh = "none",
+                    mdtohtml = "",
+                    markdowntohtml = "",
+                    mdtohtmlviewerlaunch = "",
+                    markdowntohtmlviewerlaunch = "",
+                    mdtohtmlviewerrefresh = 'none',
+                    markdowntohtmlviewerrefresh = 'none',
+
+                    -- LaTeX
+                    -- TODO: stop from polluting workspace
+                };
+
+                vim.g.knap_settings = gknapsettings;
+
+                local kmap = vim.keymap.set
+
+                -- F4 processes the document once, and refreshes the view
+                kmap({ 'n', 'v', 'i' }, '<F4>', function()
+                    require('knap').process_once();
+                end);
+
+                -- F5 closes the viewer application, and
+                -- allows settings to be reset
+                kmap({ 'n', 'v', 'i' }, '<F5>', function()
+                    require('knap').close_viewer();
+                end);
+
+                -- F6 toggles the auto-processing on and off
+                kmap({ 'n', 'v', 'i' }, '<F6>', function()
+                    require('knap').toggle_autopreviewing();
+                end);
+
+                -- F7 invokes a SyncTeX forward search, or similar,
+                -- where appropriate
+                kmap({ 'n', 'v', 'i' }, '<F7>', function()
+                    require('knap').forward_jump();
+                end);
+              '';
+          }
         ];
       };
     };