Adopt Project Manager and Nixpkgs 23.11

.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

@@ -0,0 +1,9 @@
+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"
+  version: "0.1.0"
+type: { name: "emacs-lisp" }

.config/project/default.nix

@@ -0,0 +1,77 @@
+{config, flaky, lib, ...}: {
+  project = {
+    name = "elisp-reader";
+    summary = "A custom Lisp reader written in Elisp";
+  };
+
+  ## dependency management
+  services.renovate.enable = true;
+
+  ## development
+  programs = {
+    direnv.enable = true;
+    # This should default by whether there is a .git file/dir (and whether it’s
+    # a file (worktree) or dir determines other things – like where hooks
+    # are installed.
+    git = {
+      enable = true;
+      ignores = [
+        # Compiled
+        "*.elc"
+        # Packaging
+        "/.eldev"
+      ];
+    };
+  };
+
+  ## formatting
+  editorconfig.enable = true;
+  ## See the file for why this needs to force a different version.
+  project.file.".dir-locals.el".source = lib.mkForce ../emacs/.dir-locals.el;
+  programs = {
+    treefmt = {
+      enable = true;
+      ## In elisp repos, we prefer Org over Markdown, so we don’t need this
+      ## formatter.
+      programs.prettier.enable = lib.mkForce false;
+    };
+    vale = {
+      enable = true;
+      excludes = [
+        "*.el"
+        "./.github/settings.yml"
+        "./Eldev"
+      ];
+      vocab.${config.project.name}.accept = [
+        "Eldev"
+      ];
+    };
+  };
+
+  ## CI
+  services.garnix = {
+    enable = true;
+    builds.exclude = [
+      # TODO: Remove once garnix-io/garnix#285 is fixed.
+      "homeConfigurations.x86_64-darwin-${config.project.name}-example"
+    ];
+  };
+  ## FIXME: Shouldn’t need `mkForce` here (or to duplicate the base contexts).
+  ##        Need to improve module merging.
+  services.github.settings.branches.main.protection.required_status_checks.contexts =
+    lib.mkForce
+      (lib.concatMap flaky.lib.garnixChecks [
+        (sys: "check elisp-doctor [${sys}]")
+        (sys: "check elisp-lint [${sys}]")
+        (sys: "homeConfig ${sys}-${config.project.name}-example")
+        (sys: "package default [${sys}]")
+        (sys: "package emacs-${config.project.name} [${sys}]")
+        ## FIXME: These are duplicated from the base config
+        (sys: "check formatter [${sys}]")
+        (sys: "devShell default [${sys}]")
+      ]);
+
+  ## publishing
+  services.flakehub.enable = true;
+  services.github.enable = true;
+}