treewide: make the entire generated config lua based

modules/plugins/theme/supported-themes.nix

@@ -0,0 +1,168 @@
+{
+  config,
+  lib,
+}: let
+  inherit (lib.strings) optionalString;
+  inherit (lib.trivial) boolToString warnIf;
+in {
+  onedark = {
+    setup = {style ? "dark"}: ''
+      -- OneDark theme
+      require('onedark').setup {
+        style = "${style}"
+      }
+      require('onedark').load()
+    '';
+    styles = ["dark" "darker" "cool" "deep" "warm" "warmer"];
+  };
+
+  tokyonight = {
+    setup = {
+      style ? "night",
+      transparent,
+    }: ''
+      require('tokyonight').setup {
+        transparent = ${boolToString transparent};
+      }
+      vim.cmd[[colorscheme tokyonight-${style}]]
+    '';
+    styles = ["day" "night" "storm" "moon"];
+  };
+
+  dracula = {
+    setup = {transparent}: ''
+      require('dracula').setup({
+        transparent_bg = ${boolToString transparent},
+      });
+      require('dracula').load();
+    '';
+  };
+
+  catppuccin = {
+    setup = {
+      style ? "mocha",
+      transparent ? false,
+    }: ''
+      -- Catppuccin theme
+      require('catppuccin').setup {
+        flavour = "${style}",
+        transparent_background = ${boolToString transparent},
+        term_colors = true,
+        integrations = {
+      	  nvimtree = {
+      		  enabled = true,
+      		  transparent_panel = ${boolToString transparent},
+      		  show_root = true,
+      	  },
+
+          hop = true,
+      	  gitsigns = true,
+      	  telescope = true,
+      	  treesitter = true,
+          treesitter_context = true,
+      	  ts_rainbow = true,
+          fidget = true,
+          alpha = true,
+          leap = true,
+          markdown = true,
+          noice = true,
+          notify = true, -- nvim-notify
+          which_key = true,
+          navic = {
+            enabled = false,
+            custom_bg = "NONE", -- "lualine" will set background to mantle
+          },
+        },
+      }
+      -- setup must be called before loading
+      vim.cmd.colorscheme "catppuccin"
+    '';
+    styles = ["latte" "frappe" "macchiato" "mocha"];
+  };
+
+  oxocarbon = {
+    setup = {
+      style ? "dark",
+      transparent ? false,
+    }: let
+      style' =
+        warnIf (style == "light") "oxocarbon: light theme is not well-supported" style;
+    in ''
+       require('oxocarbon')
+       vim.opt.background = "${style'}"
+       vim.cmd.colorscheme = "oxocarbon"
+      ${optionalString transparent ''
+        vim.api.nvim_set_hl(0, "Normal", { bg = "none" })
+        vim.api.nvim_set_hl(0, "NormalFloat", { bg = "none" })
+        vim.api.nvim_set_hl(0, "LineNr", { bg = "none" })
+        vim.api.nvim_set_hl(0, "SignColumn", { bg = "none" })
+        ${optionalString config.vim.filetree.nvimTree.enable ''
+          vim.api.nvim_set_hl(0, "NvimTreeNormal", { bg = "none" })
+        ''}
+      ''}
+    '';
+    styles = ["dark" "light"];
+  };
+
+  gruvbox = {
+    setup = {
+      style ? "dark",
+      transparent ? false,
+    }: ''
+      -- Gruvbox theme
+      require("gruvbox").setup({
+        terminal_colors = true, -- add neovim terminal colors
+        undercurl = true,
+        underline = true,
+        bold = true,
+        italic = {
+        strings = true,
+        emphasis = true,
+        comments = true,
+        operators = false,
+        folds = true,
+        },
+        strikethrough = true,
+        invert_selection = false,
+        invert_signs = false,
+        invert_tabline = false,
+        invert_intend_guides = false,
+        inverse = true,
+        contrast = "",
+        palette_overrides = {},
+        overrides = {},
+        dim_inactive = false,
+        transparent_mode = ${boolToString transparent},
+      })
+      vim.o.background = "${style}"
+      vim.cmd("colorscheme gruvbox")
+    '';
+    styles = ["dark" "light"];
+  };
+  rose-pine = {
+    setup = {
+      style ? "main",
+      transparent ? false,
+    }: ''
+      require("rose-pine").setup({
+        dark_variant = "${style}", -- main, moon, or dawn
+        dim_inactive_windows = false,
+        extend_background_behind_borders = true,
+
+        enable = {
+          terminal = true,
+          migrations = true,
+        },
+
+        styles = {
+          bold = false,
+          italic = false, -- I would like to add more options for this
+          transparency = ${boolToString transparent},
+        },
+      })
+
+      vim.cmd("colorscheme rose-pine")
+    '';
+    styles = ["main" "moon" "dawn"];
+  };
+}