From eb04c337a18135afca8125da9aaf73ecc1f48524 Mon Sep 17 00:00:00 2001
From: Aaron Tavistock <aaron@geekshow.com>
Date: Thu, 27 Apr 2023 15:23:50 -0700
Subject: [PATCH] Adding support for Elixir pre-commits

---
 README.md         |  7 +++++++
 modules/hooks.nix | 40 ++++++++++++++++++++++++++++++++++++++++
 2 files changed, 47 insertions(+)

diff --git a/README.md b/README.md
index f0c159bc..d3965d89 100644
--- a/README.md
+++ b/README.md
@@ -113,6 +113,13 @@ use nix
 - [elm-review](https://github.com/jfmengels/elm-review)
 - [elm-test](https://github.com/rtfeldman/node-test-runner)
 
+## Elixir
+
+- [mix-format](https://hexdocs.pm/mix/main/Mix.Tasks.Format.html)
+- [mix-test](https://hexdocs.pm/mix/1.13/Mix.Tasks.Test.html)
+- [credo](https://github.com/rrrene/credo)
+- [dialyzer](https://github.com/jeremyjh/dialyxir)
+
 ## OCaml
 
 - [dune-fmt](https://dune.build/)
diff --git a/modules/hooks.nix b/modules/hooks.nix
index 110549ec..8268565b 100644
--- a/modules/hooks.nix
+++ b/modules/hooks.nix
@@ -421,6 +421,16 @@ in
               default = true;
             };
         };
+
+      credo = {
+        strict =
+          mkOption {
+            type = types.bool;
+            description = lib.mdDoc "Whether to auto-promote the changes.";
+            default = true;
+          };
+      };
+
     };
 
   config.hooks =
@@ -1223,5 +1233,35 @@ in
           in "${pkgs.dune_3}/bin/dune build @fmt ${auto-promote}";
         pass_filenames = false;
       };
+
+      mix-format = {
+        name = "mix-format";
+        descriptiion = "Runs the built-in Elixir syntax formatter";
+        entry = "${pkgs.elixir}/bin/mix format";
+        types = [ "elixir" ];
+      };
+
+      mix-test = {
+        name = "mix-test";
+        descriptiion = "Runs the built-in Elixir test framework";
+        entry = "${pkgs.elixir}/bin/mix test";
+        types = [ "elixir" ];
+      };
+
+      credo = {
+        name = "credo";
+        descriptiion = "Runs a static code analysis using Credo";
+        entry =
+          let strict = if settings.credo.strict then "--strict" else "";
+          in "${pkgs.elixir}/bin/mix credo";
+        types = [ "elixir" ];
+      };
+
+      dialyzer = {
+        name = "dialyzer";
+        descriptiion = "Runs a static code analysis using Dialyzer";
+        entry = "${pkgs.elixir}/bin/mix dialyzer";
+        types = [ "elixir" ];
+      };
     };
 }