Adding support for Elixir pre-commits

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/)

modules/hooks.nix

@@ -498,6 +498,16 @@ in
             default = { };
           };
         };
+
+      credo = {
+        strict =
+          mkOption {
+            type = types.bool;
+            description = lib.mdDoc "Whether to auto-promote the changes.";
+            default = true;
+          };
+      };
+
     };
 
   config.hooks =
@@ -1399,6 +1409,36 @@ in
         stages = [ "commit-msg" ];
       };
 
+      mix-format = {
+        name = "mix-format";
+        description = "Runs the built-in Elixir syntax formatter";
+        entry = "${pkgs.elixir}/bin/mix format";
+        types = [ "elixir" ];
+      };
+
+      mix-test = {
+        name = "mix-test";
+        description = "Runs the built-in Elixir test framework";
+        entry = "${pkgs.elixir}/bin/mix test";
+        types = [ "elixir" ];
+      };
+
+      credo = {
+        name = "credo";
+        description = "Runs a static code analysis using Credo";
+        entry =
+          let strict = if settings.credo.strict then "--strict" else "";
+          in "${pkgs.elixir}/bin/mix credo";
+        types = [ "elixir" ];
+      };
+
+      dialyzer = {
+        name = "dialyzer";
+        description = "Runs a static code analysis using Dialyzer";
+        entry = "${pkgs.elixir}/bin/mix dialyzer";
+        types = [ "elixir" ];
+      };
+
       crystal = {
         name = "crystal";
         description = "A tool that automatically formats Crystal source code";