feat: add Nix support

6 files changed, 169 insertions, 0 deletions

diff --git a/.envrc b/.envrc
new file mode 100644
index 0000000..2fe7020
--- /dev/null
+++ b/.envrc
@@ -0,0 +1,5 @@
+# shellcheck shell=bash
+if ! has nix_direnv_version || ! nix_direnv_version 3.1.0; then
+  source_url "https://raw.githubusercontent.com/nix-community/nix-direnv/3.1.0/direnvrc" "sha256-yMJ2OVMzrFaDPn7q8nCBZFRYpL/f0RcHzhmw/i6btJM="
+fi
+use flake
diff --git a/.gitignore b/.gitignore
index fbd12ac..0291275 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
 /build
+/result
 /tests/tmp
diff --git a/README.md b/README.md
index 14822d2..3fe06f5 100644
--- a/README.md
+++ b/README.md
@@ -12,6 +12,23 @@ Ducc, Decidedly Unimplemented C compiler, is a toy C compiler.
 * [just](https://github.com/casey/just)
 
 
+### Optional: Nix support
+
+This project includes Nix support with flake.
+
+To build:
+
+```
+$ nix build
+```
+
+To develop:
+
+```
+$ nix develop
+```
+
+
 ## Build
 
 ```
diff --git a/flake.lock b/flake.lock
new file mode 100644
index 0000000..5316e16
--- /dev/null
+++ b/flake.lock
@@ -0,0 +1,85 @@
+{
+  "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": 1756542300,
+        "narHash": "sha256-tlOn88coG5fzdyqz6R93SQL5Gpq+m/DsWpekNFhqPQk=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "d7600c775f877cd87b4f5a831c28aa94137377aa",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "flake-utils": "flake-utils",
+        "nixpkgs": "nixpkgs",
+        "systems": "systems",
+        "treefmt-nix": "treefmt-nix"
+      }
+    },
+    "systems": {
+      "locked": {
+        "lastModified": 1680978846,
+        "narHash": "sha256-Gtqg8b/v49BFDpDetjclCYXm8mAnTrUzR0JnE2nv5aw=",
+        "owner": "nix-systems",
+        "repo": "x86_64-linux",
+        "rev": "2ecfcac5e15790ba6ce360ceccddb15ad16d08a8",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "x86_64-linux",
+        "type": "github"
+      }
+    },
+    "treefmt-nix": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1755934250,
+        "narHash": "sha256-CsDojnMgYsfshQw3t4zjRUkmMmUdZGthl16bXVWgRYU=",
+        "owner": "numtide",
+        "repo": "treefmt-nix",
+        "rev": "74e1a52d5bd9430312f8d1b8b0354c92c17453e5",
+        "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 100644
index 0000000..385fcc1
--- /dev/null
+++ b/flake.nix
@@ -0,0 +1,54 @@
+{
+  description = "Decidedly Unimplemented C compiler, a toy C compiler";
+
+  inputs = {
+    nixpkgs.url = "github:nixos/nixpkgs?ref=nixos-unstable";
+
+    systems.url = "github:nix-systems/x86_64-linux";
+
+    flake-utils = {
+      url = "github:numtide/flake-utils";
+      inputs.systems.follows = "systems";
+    };
+
+    treefmt-nix = {
+      url = "github:numtide/treefmt-nix";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+  };
+
+  outputs =
+    {
+      self,
+      nixpkgs,
+      flake-utils,
+      treefmt-nix,
+      ...
+    }:
+    flake-utils.lib.eachDefaultSystem (
+      system:
+      let
+        pkgs = import nixpkgs { inherit system; };
+        treefmt = treefmt-nix.lib.evalModule pkgs ./treefmt.nix;
+      in
+      {
+        packages.default = pkgs.stdenv.mkDerivation {
+          pname = "ducc";
+          version = "0.1.0";
+          src = ./.;
+          installPhase = ''
+            mkdir -p $out/bin
+            cp build/ducc $out/bin
+          '';
+        };
+
+        devShells.default = pkgs.mkShell {
+          packages = [
+            pkgs.just
+          ];
+        };
+
+        formatter = treefmt.config.build.wrapper;
+      }
+    );
+}
diff --git a/treefmt.nix b/treefmt.nix
new file mode 100644
index 0000000..b32553e
--- /dev/null
+++ b/treefmt.nix
@@ -0,0 +1,7 @@
+{ pkgs, ... }:
+{
+  projectRootFile = "flake.nix";
+
+  programs.clang-format.enable = true;
+  programs.nixfmt.enable = true;
+}