From 029932873ab2b5449ad4f377ffd6d1704c837a19 Mon Sep 17 00:00:00 2001
From: Nikolaos Karaolidis <nick@karaolidis.com>
Date: Mon, 4 Aug 2025 10:32:18 +0200
Subject: [PATCH] Add flake

Signed-off-by: Nikolaos Karaolidis <nick@karaolidis.com>
---
 .envrc      |  1 +
 flake.lock  | 82 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 flake.nix   | 33 +++++++++++++++++++++
 treefmt.nix | 19 +++++++++++++
 4 files changed, 135 insertions(+)
 create mode 100644 .envrc
 create mode 100644 flake.lock
 create mode 100755 flake.nix
 create mode 100755 treefmt.nix

diff --git a/.envrc b/.envrc
new file mode 100644
index 0000000..3550a30
--- /dev/null
+++ b/.envrc
@@ -0,0 +1 @@
+use flake
diff --git a/flake.lock b/flake.lock
new file mode 100644
index 0000000..fa660e8
--- /dev/null
+++ b/flake.lock
@@ -0,0 +1,82 @@
+{
+  "nodes": {
+    "flake-utils": {
+      "inputs": {
+        "systems": "systems"
+      },
+      "locked": {
+        "lastModified": 1731533236,
+        "narHash": "sha256-l0KFg5HjrsfsO/JpG+r7fRrqm12kzFHyUHqHCVpMMbI=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "11707dc2f618dd54ca8739b309ec4fc024de578b",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1753939845,
+        "narHash": "sha256-K2ViRJfdVGE8tpJejs8Qpvvejks1+A4GQej/lBk5y7I=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "94def634a20494ee057c76998843c015909d6311",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "flake-utils": "flake-utils",
+        "nixpkgs": "nixpkgs",
+        "treefmt-nix": "treefmt-nix"
+      }
+    },
+    "systems": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
+    },
+    "treefmt-nix": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1754061284,
+        "narHash": "sha256-ONcNxdSiPyJ9qavMPJYAXDNBzYobHRxw0WbT38lKbwU=",
+        "owner": "numtide",
+        "repo": "treefmt-nix",
+        "rev": "58bd4da459f0a39e506847109a2a5cfceb837796",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "treefmt-nix",
+        "type": "github"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}
diff --git a/flake.nix b/flake.nix
new file mode 100755
index 0000000..f5f9848
--- /dev/null
+++ b/flake.nix
@@ -0,0 +1,33 @@
+{
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+
+    flake-utils.url = "github:numtide/flake-utils";
+
+    treefmt-nix = {
+      url = "github:numtide/treefmt-nix";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+  };
+
+  outputs =
+    inputs:
+    (
+      let
+        system = "x86_64-linux";
+
+        pkgs = import inputs.nixpkgs {
+          inherit system;
+          config.allowUnfree = true;
+        };
+
+        treefmt = inputs.treefmt-nix.lib.evalModule pkgs ./treefmt.nix;
+      in
+      {
+        devShells.${system}.default = pkgs.mkShell { packages = with pkgs; [ hugo ]; };
+
+        formatter.${system} = treefmt.config.build.wrapper;
+        checks.formatting.${system} = treefmt.config.build.check inputs.self;
+      }
+    );
+}
diff --git a/treefmt.nix b/treefmt.nix
new file mode 100755
index 0000000..092ee3c
--- /dev/null
+++ b/treefmt.nix
@@ -0,0 +1,19 @@
+{ ... }:
+{
+  projectRootFile = "flake.nix";
+
+  programs = {
+    nixfmt = {
+      enable = true;
+      strict = true;
+    };
+
+    prettier.enable = true;
+  };
+
+  settings = {
+    global = {
+      excludes = [ ".envrc" ];
+    };
+  };
+}