feat(wpcarro/emacs): Package al, list, set, struct r/4342

Originally I set-out to package `al.el`, but as I started traversing the
dependencies, I needed to package increasingly more packages. I refactored some
of these to prune their dependencies to slay this hydra before it turned into a
never-ending project. I have mixed feelings about this.

I also introduced `ert` and unit tests into my Elisp packaging, so it'll be nice
to have build-time tests that run when Emacs updates land in depot.

Change-Id: I2756dc60888b80255a495e08ae61bd547e6b3db2
Reviewed-on: https://cl.tvl.fyi/c/depot/+/5998
Reviewed-by: wpcarro <wpcarro@gmail.com>
Autosubmit: wpcarro <wpcarro@gmail.com>
Tested-by: BuildkiteCI

1 files changed, 28 insertions, 0 deletions

diff --git a/users/wpcarro/emacs/pkgs/al/default.nix b/users/wpcarro/emacs/pkgs/al/default.nix
new file mode 100644
index 000000000000..d88e0757a875
--- /dev/null
+++ b/users/wpcarro/emacs/pkgs/al/default.nix
@@ -0,0 +1,28 @@
+{ pkgs, depot, ... }:
+
+let
+  al = pkgs.callPackage
+    ({ emacsPackages }:
+      emacsPackages.trivialBuild {
+        pname = "al";
+        version = "1.0.0";
+        src = ./al.el;
+        packageRequires =
+          (with emacsPackages; [
+            dash
+          ]) ++
+          (with depot.users.wpcarro.emacs.pkgs; [
+            list
+          ]);
+      })
+    { };
+
+  emacs = (pkgs.emacsPackagesFor pkgs.emacs28).emacsWithPackages (epkgs: [ al ]);
+in
+al.overrideAttrs (_old: {
+  doCheck = true;
+  checkPhase = ''
+    ${emacs}/bin/emacs -batch \
+      -l ert -l ${./tests.el} -f ert-run-tests-batch-and-exit
+  '';
+})