Replace straight.el with nix

early-init.el

@@ -1,8 +1,12 @@
 (setq native-comp-speed -1)
-(setq package-enable-at-startup nil)
 
 ;; Anti-flashbang
 (custom-set-faces
  '(default ((t (:foreground "#b7c9ee" :background "#0d1017")))))
 (menu-bar-mode -1)
 (tool-bar-mode -1)
+
+;; This defaults to XDG_CONFIG_HOME, which is bad because lots of
+;; state gets written to it.
+(setq user-emacs-directory
+      (concat (file-name-as-directory (getenv "XDG_DATA_HOME")) "emacs"))

flake.lock

@@ -0,0 +1,80 @@
+{
+  "nodes": {
+    "emacs-overlay": {
+      "inputs": {
+        "flake-utils": "flake-utils",
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1673667358,
+        "narHash": "sha256-29xEYwKyYQQzpmN7bdCGRTNiSazkpFF6UWYx2RYaKJo=",
+        "owner": "nix-community",
+        "repo": "emacs-overlay",
+        "rev": "1114c22aeb13c1c2344f237ec57bf155c9fc1a8f",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "emacs-overlay",
+        "type": "github"
+      }
+    },
+    "flake-utils": {
+      "locked": {
+        "lastModified": 1667395993,
+        "narHash": "sha256-nuEHfE/LcWyuSWnS8t12N1wc105Qtau+/OdUAjtQ0rA=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "5aed5285a952e0b949eb3ba02c12fa4fcfef535f",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1673612960,
+        "narHash": "sha256-DWR7hrbecJKmUJCswk9MXZta710mq+3jZwTvHU/UfyY=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "e285dd0ca97c264003867c7329f0d1f4f028739c",
+        "type": "github"
+      },
+      "original": {
+        "id": "nixpkgs",
+        "ref": "nixos-22.11",
+        "type": "indirect"
+      }
+    },
+    "root": {
+      "inputs": {
+        "emacs-overlay": "emacs-overlay",
+        "nixpkgs": "nixpkgs",
+        "ts-fold": "ts-fold"
+      }
+    },
+    "ts-fold": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1673328482,
+        "narHash": "sha256-6yQ35uJDAK531QNQZgloQaOQayRa8azOlOMbO8lXsHE=",
+        "owner": "emacs-tree-sitter",
+        "repo": "ts-fold",
+        "rev": "75d6f9ed317b042b5bc7cb21503596d1c7a1b8c0",
+        "type": "github"
+      },
+      "original": {
+        "owner": "emacs-tree-sitter",
+        "repo": "ts-fold",
+        "type": "github"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

flake.nix

@@ -0,0 +1,102 @@
+{
+  inputs = {
+    nixpkgs.url = "nixpkgs/nixos-22.11";
+
+    emacs-overlay = {
+      url = "github:nix-community/emacs-overlay";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+
+    ts-fold = {
+      url = "github:emacs-tree-sitter/ts-fold";
+      flake = false;
+    };
+  };
+
+  outputs = { ts-fold, nixpkgs, emacs-overlay, ... }: let
+    system = "x86_64-linux";
+    nix = import nixpkgs (let
+      inherit (emacs-overlay.overlays) emacs package;
+      grammers = (self: super: {
+        tree-sitter-grammars = super.tree-sitter-grammars // {
+          tree-sitter-rust = super.tree-sitter-grammars.tree-sitter-rust.overrideAttrs(_: {
+            nativeBuildInputs = [ self.nodejs self.tree-sitter ];
+            configurePhase = ''
+                tree-sitter generate --abi 13 src/grammar.json
+                '';
+          });
+        };
+      });
+    in {
+      inherit system;
+      overlays = [
+        emacs
+        package
+        grammers
+      ];
+    });
+  in {
+    packages.${system} = let
+      custom-emacs =
+        with nix; with pkgs;
+        ((emacsPackagesFor emacs).emacsWithPackages (epkgs: with epkgs; [
+          avy
+          company
+          editorconfig
+          evil
+          evil-collection
+          evil-goggles
+          evil-textobj-tree-sitter
+          flycheck
+          lsp-mode
+          lsp-treemacs
+          lsp-ui
+          magit
+          markdown-mode
+          nix-mode reformatter # required by nix mode
+          projectile
+          rainbow-mode
+          rustic
+          tree-sitter
+          tree-sitter-langs
+          (trivialBuild {
+            pname = "ts-fold";
+            version = "0.1.0";
+            src = ts-fold;
+
+            buildInputs = [
+              tree-sitter
+              s
+              fringe-helper
+            ];
+          })
+          treemacs
+          treemacs-evil
+          treemacs-projectile
+          treemacs-magit
+          use-package
+          vertico
+          which-key
+          ws-butler
+        ]));
+    in {
+      emacs = custom-emacs;
+
+      module =
+        with nix; {
+          home.packages = [ custom-emacs ];
+
+          xdg.configFile."emacs".source = with pkgs;
+            runCommandNoCC ".emacs.d" {
+              nativeBuildInputs = [ emacs ];
+            } ''
+              cp ${./early-init.el} early-init.el
+              cp ${./init.el} init.el
+              cp ${./my-theme-theme.el} my-theme-theme.el
+              install -d $out
+              install *.el *.elc $out
+            '';
+        };
+    };
+  };
+}

init.el

@@ -47,26 +47,8 @@
 (add-hook 'lisp-mode-hook 'disable-tabs)
 (add-hook 'emacs-lisp-mode-hook 'disable-tabs)
 
-;;;; Packages (straight.el)
-
-(defvar bootstrap-version)
-(let ((bootstrap-file
-       (expand-file-name "straight/repos/straight.el/bootstrap.el" user-emacs-directory))
-      (bootstrap-version 6))
-  (unless (file-exists-p bootstrap-file)
-    (with-current-buffer
-	(url-retrieve-synchronously
-	 "https://raw.githubusercontent.com/radian-software/straight.el/develop/install.el"
-	 'silent 'inhibit-cookies)
-      (goto-char (point-max))
-      (eval-print-last-sexp)))
-  (load bootstrap-file nil 'nomessage))
-
-(setq straight-disable-native-compile t)
-
-;; Use-Package
-(straight-use-package 'use-package)
-(setq straight-use-package-by-default t)
+;; Packages
+(require 'use-package)
 
 ;; Evil (Vim Emulation)
 (use-package evil
@@ -118,8 +100,7 @@
   (add-hook 'prog-mode-hook #'ws-butler-mode))
 
 ;; Code folding
-(use-package ts-fold
-  :straight (ts-fold :type git :host github :repo "emacs-tree-sitter/ts-fold"))
+(use-package ts-fold)
 
 ;; Markdown
 (use-package markdown-mode