use nix as a nvim packet manager

plugins.py

@@ -0,0 +1,57 @@
+plugins = [
+    "aklt/plantuml-syntax",
+    "kyazdani42/nvim-web-devicons",
+    "nvim-treesitter/nvim-treesitter",
+    "neovim/nvim-lspconfig",
+    "nvim-lua/lsp-status.nvim",
+    "kosayoda/nvim-lightbulb",
+    "Yggdroot/indentLine",
+    "lewis6991/gitsigns.nvim",
+    "nvim-lua/plenary.nvim",
+    "bluz71/vim-moonfly-colors",
+    "hrsh7th/vim-vsnip",
+    "hrsh7th/cmp-nvim-lsp",
+    "hrsh7th/cmp-buffer",
+    "hrsh7th/cmp-calc",
+    "hrsh7th/cmp-path",
+    "kdheepak/cmp-latex-symbols",
+    "hrsh7th/nvim-cmp",
+    "dpelle/vim-Grammalecte",
+    "dpelle/vim-LanguageTool",
+    "nvim-lua/lsp_extensions.nvim",
+    "ray-x/lsp_signature.nvim",
+    "nvim-telescope/telescope.nvim",
+    "nvim-lua/popup.nvim",
+    "NTBBloodbath/galaxyline.nvim",
+    "drmikehenry/vim-headerguard",
+    "andymass/vim-matchup",
+    "b3nj5m1n/kommentary",
+    "onsails/lspkind-nvim",
+    "editorconfig/editorconfig-vim",
+    "jose-elias-alvarez/null-ls.nvim",
+    "nathom/filetype.nvim",
+    "tweekmonster/startuptime.vim",
+]
+
+inputs = ""
+nvim_plugins = "nvim-plugins = [\n";
+for plugin in plugins:
+    repo,plugin = plugin.split('/')
+    inputs += f'"{plugin}" = {{\n'
+    inputs += f'  url = "github:{repo}/{plugin}";\n'
+    inputs += f'  flake = false;\n'
+    inputs += "};\n"
+
+    nvim_plugins += "  {\n"
+    nvim_plugins += f'    name = "{plugin}";\n'
+    nvim_plugins += f'    path = inputs."{plugin}";\n'
+    nvim_plugins += "  }\n"
+nvim_plugins += "];\n"
+
+with open("flake.nix.in") as f:
+    flake = f.read()
+    flake = flake.replace("@inputs@\n", inputs)
+    flake = flake.replace("@plugins@\n", nvim_plugins)
+    out = open("flake.nix", "w")
+    out.write(flake)
+