feat: autogenerate plugin flake inputs from a script

Author: SystematicError

flake.nix

@@ -1,6 +1,11 @@
 {
   description = "Neovim configuration with a side of flakes";
 
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
+    flake-utils.url = "github:numtide/flake-utils";
+  };
+
   outputs = {
     self,
     nixpkgs,
@@ -99,146 +104,118 @@
       };
     });
 
-  inputs = {
-    nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
-    flake-utils.url = "github:numtide/flake-utils";
-
-    # Plugin loader
-
-    "lazy.nvim" = {
-      url = "github:folke/lazy.nvim";
-      flake = false;
-    };
+  # Nvim plugins (autogenerated by generate-nix-inputs.lua)
 
-    # Plugins
+  # PLUGINS START
+  inputs = {
     "blink.cmp" = {
       url = "github:Saghen/blink.cmp";
       flake = false;
     };
-
     "bufferline.nvim" = {
       url = "github:akinsho/bufferline.nvim";
       flake = false;
     };
-
     "catppuccin" = {
       url = "github:catppuccin/nvim";
       flake = false;
     };
-
     "conform.nvim" = {
       url = "github:stevearc/conform.nvim";
       flake = false;
     };
-
     "diffview.nvim" = {
       url = "github:sindrets/diffview.nvim";
       flake = false;
     };
-
     "friendly-snippets" = {
       url = "github:rafamadriz/friendly-snippets";
       flake = false;
     };
-
     "gitsigns.nvim" = {
       url = "github:lewis6991/gitsigns.nvim";
       flake = false;
     };
-
     "guess-indent.nvim" = {
       url = "github:NMAC427/guess-indent.nvim";
       flake = false;
     };
-
+    "lazy.nvim" = {
+      url = "github:folke/lazy.nvim";
+      flake = false;
+    };
     "lualine.nvim" = {
       url = "github:nvim-lualine/lualine.nvim";
       flake = false;
     };
-
     "markview.nvim" = {
       url = "github:OXY2DEV/markview.nvim";
       flake = false;
     };
-
     "neo-tree.nvim" = {
       url = "github:nvim-neo-tree/neo-tree.nvim";
       flake = false;
     };
-
     "neogit" = {
       url = "github:NeogitOrg/neogit";
       flake = false;
     };
-
     "nui.nvim" = {
       url = "github:MunifTanjim/nui.nvim";
       flake = false;
     };
-
     "nvim-autopairs" = {
       url = "github:windwp/nvim-autopairs";
       flake = false;
     };
-
     "nvim-highlight-colors" = {
       url = "github:brenoprata10/nvim-highlight-colors";
       flake = false;
     };
-
     "nvim-lightbulb" = {
       url = "github:kosayoda/nvim-lightbulb";
       flake = false;
     };
-
     "nvim-lspconfig" = {
       url = "github:neovim/nvim-lspconfig";
       flake = false;
     };
-
     "nvim-treesitter" = {
       url = "github:nvim-treesitter/nvim-treesitter";
       flake = false;
     };
-
     "nvim-treesitter-textobjects" = {
       url = "github:nvim-treesitter/nvim-treesitter-textobjects";
       flake = false;
     };
-
     "nvim-web-devicons" = {
       url = "github:nvim-tree/nvim-web-devicons";
       flake = false;
     };
-
     "persistence.nvim" = {
       url = "github:folke/persistence.nvim";
       flake = false;
     };
-
     "plenary.nvim" = {
       url = "github:nvim-lua/plenary.nvim";
       flake = false;
     };
-
     "satellite.nvim" = {
       url = "github:lewis6991/satellite.nvim";
       flake = false;
     };
-
     "scope.nvim" = {
       url = "github:tiagovla/scope.nvim";
       flake = false;
     };
-
     "snacks.nvim" = {
       url = "github:folke/snacks.nvim";
       flake = false;
     };
-
     "which-key.nvim" = {
       url = "github:folke/which-key.nvim";
       flake = false;
     };
   };
+  # PLUGINS END
 }

generate-nix-inputs.lua

@@ -0,0 +1,22 @@
+-- Quick and dirty script to add plugins as flake inputs from a running vim session
+-- Use the vim command `:luafile generate-nix-inputs.lua` to update the inputs
+
+local plugins = vim.tbl_map(function(p)
+    return getmetatable(p).__index[1]
+end, require("lazy.core.config").plugins)
+
+plugins = vim.tbl_values(vim.tbl_map(function(p)
+    return ('"%s"={url="github:%s";flake=false;};'):format(p, plugins[p])
+end, vim.tbl_keys(plugins)))
+
+table.sort(plugins)
+
+plugins = "inputs={" .. table.concat(plugins) .. "};"
+
+vim.fn.system(
+    ("sed -i '/^\\s*# PLUGINS START/,/^\\s*# PLUGINS END/{/^\\s*# PLUGINS START/{p; a\\\n%s\n}; /^\\s*# PLUGINS END/p; d}' flake.nix"):format(
+        plugins
+    )
+)
+
+vim.fn.system "alejandra flake.nix"