From 14bbca969852f83550105dff5d1218fc62912f81 Mon Sep 17 00:00:00 2001
From: Christian Hoener zu Siederdissen <christian.hoener@iohk.io>
Date: Tue, 17 Dec 2024 08:25:43 -0300
Subject: [PATCH] Quality of life changes

* Stylish Haskell configuration included

* Disabled nixpkgs-fmt (currently no idea why it breaks in the hook)

* nonix pre-commit-hook (not tested myself)
---
 .gitignore                    |  1 +
 .pre-commit-config.yaml.nonix | 80 +++++++++++++++++++++++++++++++++++
 .stylish-haskell.yaml         | 32 ++++++++++++++
 nix/shell.nix                 |  3 +-
 4 files changed, 115 insertions(+), 1 deletion(-)
 create mode 100644 .pre-commit-config.yaml.nonix
 create mode 100644 .stylish-haskell.yaml

diff --git a/.gitignore b/.gitignore
index 462c7c7..dd86fbb 100644
--- a/.gitignore
+++ b/.gitignore
@@ -31,3 +31,4 @@ haddocks/
 get-protocol-parameters.sh
 protocol-parameters-mainnet.json
 .pre-commit-config.yaml
+tags
diff --git a/.pre-commit-config.yaml.nonix b/.pre-commit-config.yaml.nonix
new file mode 100644
index 0000000..91b3c8f
--- /dev/null
+++ b/.pre-commit-config.yaml.nonix
@@ -0,0 +1,80 @@
+# DO NOT MODIFY
+# This file was generated by git-hooks.nix
+{
+  "default_stages": [
+    "pre-commit"
+  ],
+  "repos": [
+    {
+      "hooks": [
+        {
+          "always_run": false,
+          "args": [],
+          "entry": "/nix/store/l85yyds9b2jzv5swfq4hpjwv21dq7ylr-cabal-fmt-exe-cabal-fmt-0.1.12/bin/cabal-fmt --inplace ",
+          "exclude": "^$",
+          "exclude_types": [],
+          "fail_fast": false,
+          "files": "\\.(cabal)$",
+          "id": "cabal-fmt",
+          "language": "system",
+          "name": "cabal-fmt",
+          "pass_filenames": true,
+          "require_serial": false,
+          "stages": [
+            "pre-commit"
+          ],
+          "types": [
+            "file"
+          ],
+          "types_or": [],
+          "verbose": false
+        },
+        {
+          "always_run": false,
+          "args": [],
+          "entry": " ",
+          "exclude": "^$",
+          "exclude_types": [],
+          "fail_fast": false,
+          "files": "",
+          "id": "nixpkgs-fmt",
+          "language": "system",
+          "name": "nixpkgs-fmt",
+          "pass_filenames": false,
+          "require_serial": false,
+          "stages": [
+            "pre-commit"
+          ],
+          "types": [
+            "file"
+          ],
+          "types_or": [],
+          "verbose": false
+        },
+        {
+          "always_run": false,
+          "args": [],
+          "entry": "/nix/store/in4rzg7z6mkblbasxxsg6dik44jkngbj-stylish-haskell-exe-stylish-haskell-0.14.6.0/bin/stylish-haskell --inplace --config .stylish-haskell.yaml ",
+          "exclude": "^$",
+          "exclude_types": [],
+          "fail_fast": false,
+          "files": "\\.(hs|lhs)$",
+          "id": "stylish-haskell",
+          "language": "system",
+          "name": "stylish-haskell",
+          "pass_filenames": true,
+          "require_serial": false,
+          "stages": [
+            "pre-commit"
+          ],
+          "types": [
+            "file"
+          ],
+          "types_or": [],
+          "verbose": false
+        }
+      ],
+      "repo": "local"
+    }
+  ]
+}
diff --git a/.stylish-haskell.yaml b/.stylish-haskell.yaml
new file mode 100644
index 0000000..9bc95c0
--- /dev/null
+++ b/.stylish-haskell.yaml
@@ -0,0 +1,32 @@
+steps:
+
+  - simple_align:
+      cases: never
+      top_level_patterns: never
+      records: never
+      multi_way_if: never
+
+  - imports:
+      align: none
+      post_qualify: true
+
+  - language_pragmas:
+      remove_redundant: false
+
+  - trailing_whitespace: {}
+
+columns: 80
+
+newline: native
+
+language_extensions:
+  - GeneralizedNewtypeDeriving
+  - ImportQualifiedPost
+  - NumericUnderscores
+  - OverloadedStrings
+  - BangPatterns ## stylish-haskell reports an error when and expression starts with `!`
+  - TypeOperators ## stylish-haskell reports an error when importing type operators such as `import Prelude (type (~))`
+
+# stylish-haskell doesn't understand Cabal common-stanzas, so let's just
+# disable it.
+cabal: false
diff --git a/nix/shell.nix b/nix/shell.nix
index 8a79662..badcff7 100644
--- a/nix/shell.nix
+++ b/nix/shell.nix
@@ -9,6 +9,7 @@ in
   name = "smart-tokens-plutarch";
   packages = [
     pkgs.ghcid
+    pkgs.nixpkgs-fmt
   ];
 
   env = { };
@@ -21,6 +22,6 @@ in
     #       This step is necessary because `.pre-commit-config.yaml` is ignored by git.
     cabal-fmt.enable = true;
     stylish-haskell.enable = true;
-    nixpkgs-fmt.enable = true;
+    nixpkgs-fmt.enable = false;
   };
 }