nvim: Add markmap to build mindmaps

Added markmap plugin to make mindmaps from markdown. Uses
headings for leaves, and works pretty automatically.
Testing its functionality longer-term for now.

nvim/.config/nvim/lua/plugins/prose.lua

@@ -1,6 +1,6 @@
 local writing_ft = { "quarto", "pandoc", "markdown", "text", "tex" }
 
-return {
+local prose_plugs = {
 	-- UI improvements
 	-- provide distraction free writing
 	{ "folke/zen-mode.nvim", config = true, event = "VeryLazy" },
@@ -12,10 +12,10 @@ return {
 			require("wrapping").setup({
 				create_keymappings = false,
 				notify_on_switch = false,
-				softener = { markdown = true, text = true, asciidoc = true }
+				softener = { markdown = true, text = true, asciidoc = true },
 			})
 		end,
-		lazy = false
+		lazy = false,
 	},
 	-- displays prettier headlines mimicking the ones in emacs orgmode
 	{
@@ -60,14 +60,29 @@ return {
 
 	-- syntax highlighting for markdown criticmarkup (comments, additions, ...)
 	{ "vim-pandoc/vim-criticmarkup", ft = writing_ft },
-	-- inline display of latex formulas
-	-- TODO always demands latex treesitter to be installed even if it is
-	-- TODO always turns softwrapped lines off on exiting insert mode
-	--{
-	--"jbyuki/nabla.nvim",
-	--ft = writing_ft,
-	--config = function()
-	--require("nabla").enable_virt({ autogen = true, silent = true })
-	--end,
-	--},
+
+	-- create mindmaps from your markdown
+	{
+		"Zeioth/markmap.nvim",
+		cmd = { "MarkmapOpen", "MarkmapSave", "MarkmapWatch", "MarkmapWatchStop" },
+		config = true,
+	},
+
+	-- cite as you write from papis databases
+	-- ADDITIONAL DEPENDENCIES: papis and yq in shell env
+	-- {
+	-- 	"jghauser/papis.nvim",
+	-- 	cond = vim.fn.executable("papis") == 1 and vim.fn.executable("yq") == 1,
+	-- 	ft = writing_ft,
+	-- 	dependencies = {
+	-- 		"kkharji/sqlite.lua",
+	-- 		"nvim-lua/plenary.nvim",
+	-- 		"MunifTanjim/nui.nvim",
+	-- 		"nvim-treesitter/nvim-treesitter",
+	-- 	},
+	-- 	lazy = false,
+	-- 	config = true,
+	-- }
 }
+
+return prose_plugs