Add packaging

.config/emacs/.dir-locals.el

@@ -0,0 +1,6 @@
+;; TODO: We have to be careful what variables we set here. Some can cause the
+;;       Eldev linters to not read the settings here. See emacs-eldev/eldev#83.
+((nil
+  (fill-column . 80)
+  (indent-tabs-mode . nil)
+  (sentence-end-double-space . t)))

.config/mustache.yaml

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+project:
+  description: >-
+    This makes it possible to define syntax extensions, similar to what can
+    be done in Common Lisp with `set-macro-character`.
+  name: "elisp-reader"
+  repo: "sellout/elisp-reader.el"
+  summary: "A custom Lisp reader written in Elisp"
+type: { name: "emacs-lisp" }

.config/project/default.nix

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+{
+  config,
+  flaky,
+  lib,
+  supportedSystems,
+  ...
+}: {
+  project = {
+    name = "elisp-reader";
+    summary = "A custom Lisp reader written in Elisp";
+  };
+
+  ## dependency management
+  services.renovate.enable = true;
+
+  ## development
+  programs = {
+    direnv.enable = true;
+    git.enable = true;
+  };
+
+  ## formatting
+  editorconfig.enable = true;
+  project.file.".dir-locals.el".source = lib.mkForce ../emacs/.dir-locals.el;
+  programs = {
+    treefmt.enable = true;
+    vale.enable = true;
+  };
+
+  ## CI
+  services.garnix.enable = true;
+
+  ## publishing
+  services.flakehub.enable = true;
+  services.github.enable = true;
+}

Eldev

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+;; -*- mode: emacs-lisp; lexical-binding: t; -*-
+
+(require 'eldev)
+
+(setq
+  eldev-files-to-package `(:or ,eldev-files-to-package "*.elc")
+  ;; run all linters by default
+  eldev-lint-default t
+  ;; and disable the ‘elisp-lint’ validators that are already covered by
+  ;; ‘eldev-lint’ (see ‘eldev-linter-elisp’).
+  elisp-lint-ignored-validators '("checkdoc" "package-lint"))
+
+;; Allow `read-symbol-shorthands` to work (see purcell/package-lint#238).
+(eval-after-load 'package-lint
+  '(add-to-list 'package-lint--allowed-prefix-mappings
+     '("elisp-reader" . ("er"))))