From f2ea15fa7caf37357d517ceb1d2ae5014d917843 Mon Sep 17 00:00:00 2001
From: Daniel Flanagan <daniel@lyte.dev>
Date: Mon, 23 Dec 2024 19:21:49 -0600
Subject: [PATCH] Elixir

---
 templates/elixir/.gitignore       |  3 +++
 templates/elixir/nix/checks.nix   | 22 +++++++++++++++++-----
 templates/elixir/nix/packages.nix |  1 +
 templates/elixir/nix/shells.nix   |  9 +++++++--
 4 files changed, 28 insertions(+), 7 deletions(-)

diff --git a/templates/elixir/.gitignore b/templates/elixir/.gitignore
index 8cf7b60..4b64fa1 100644
--- a/templates/elixir/.gitignore
+++ b/templates/elixir/.gitignore
@@ -20,3 +20,6 @@ erl_crash.dump
 
 # direnv cache
 /.direnv
+
+# nix-generated pre commit hooks
+.pre-commit-config.yaml
diff --git a/templates/elixir/nix/checks.nix b/templates/elixir/nix/checks.nix
index d6e6f79..c88dd7d 100644
--- a/templates/elixir/nix/checks.nix
+++ b/templates/elixir/nix/checks.nix
@@ -2,16 +2,28 @@
   git-hooks,
   pkgs,
   ...
-}: {
+}: let
+  hook = {
+    command,
+    stages ? ["pre-commit"],
+    ...
+  }: {
+    inherit stages;
+    enable = true;
+    name = command;
+    entry = command;
+    pass_filenames = false;
+  };
+in {
   git-hooks = git-hooks.lib.${pkgs.system}.run {
     src = ./..;
     hooks = {
       alejandra.enable = true;
       convco.enable = true;
-      credo.enable = true;
-      dialyzer.enable = true;
-      mix-format.enable = true;
-      mix-test.enable = true;
+      credo = hook {command = "mix credo --strict";};
+      formatting = hook {command = "mix format --check-formatted";};
+      dialyzer = hook {command = "mix dialyzer";};
+      test = hook {command = "mix test";};
     };
   };
 }
diff --git a/templates/elixir/nix/packages.nix b/templates/elixir/nix/packages.nix
index ed886a4..3be71ed 100644
--- a/templates/elixir/nix/packages.nix
+++ b/templates/elixir/nix/packages.nix
@@ -14,6 +14,7 @@ in {
       pname = "mix-deps-${pname}";
       sha256 = pkgs.lib.fakeSha256;
     };
+    LANG = "C.UTF-8";
     # buildInputs = with pkgs; [];
     # HOME = "$(pwd)";
     # MIX_XDG = "$HOME";
diff --git a/templates/elixir/nix/shells.nix b/templates/elixir/nix/shells.nix
index 7a7512a..91dcd91 100644
--- a/templates/elixir/nix/shells.nix
+++ b/templates/elixir/nix/shells.nix
@@ -1,15 +1,20 @@
 {
   pkgs,
-  # self,
+  self,
   ...
 }: {
   elixir-dev = pkgs.mkShell {
-    shellHook = "export LOCALE_ARCHIVE=/usr/lib/locale/locale-archive";
+    shellHook = ''
+      ${self.checks.${pkgs.system}.git-hooks.shellHook}
+      export LOCALE_ARCHIVE=/usr/lib/locale/locale-archive
+    '';
     # inputsFrom = [self.packages.${pkgs.system}.my-package];
     buildInputs = with pkgs; [
       elixir
       elixir-ls
       inotify-tools
     ];
+    MIX_ENV = "dev";
   };
+  default = self.outputs.devShells.${pkgs.system}.elixir-dev;
 }