From a4d29644f7116976cb0b626c49b152332adc52dc Mon Sep 17 00:00:00 2001
From: Ingolf Wagner <contact@ingolf-wagner.de>
Date: Tue, 28 Sep 2021 20:14:17 +0200
Subject: [PATCH] feat: add flake

---
 README.md   | 39 ++++++++++++++++++++++++++++++++++++++-
 default.nix | 47 +++++++++++++++++++++++++++++++++++++++++++++++
 flake.lock  | 41 +++++++++++++++++++++++++++++++++++++++++
 flake.nix   | 17 +++++++++++++++++
 4 files changed, 143 insertions(+), 1 deletion(-)
 create mode 100644 default.nix
 create mode 100644 flake.lock
 create mode 100644 flake.nix

diff --git a/README.md b/README.md
index 26b1db1..d5331e4 100644
--- a/README.md
+++ b/README.md
@@ -30,4 +30,41 @@ image inspired by the
 
 ```
 cargo run --example clipping -- --help # run the examples/clipping
-```
\ No newline at end of file
+```
+# How to Build (with flakes)
+
+```shell
+nix build
+```
+or (if you haven't enabled flakes yet)
+
+``` shell
+nix-shell -p nixFlake --run "nix build"
+```
+
+# How to us it (with flakes)
+
+``` nix
+{
+  description = "example usage";
+  inputs.nixpkgs.url = "github:nixos/nixpkgs/nixos-21.05";
+  inputs.polygon-art.url = "git+https://git.ingolf-wagner.de/palo/polygon-art.git";
+  inputs.polygon-art.inputs.nixpkgs.follows = "nixpkgs";
+  outputs = { self, nixpkgs, polygon-art, ... }: {
+    nixosConfigurations.example = nixpkgs.lib.nixosSystem {
+      system = "x86_64-linux";
+      modules = [
+        ({ pkgs, ... }: {
+          nixpkgs.overlays = [
+            (_self: _super: {
+              polygon-art = polygon-art.packages.${pkgs.system};
+            })
+          ];
+          environment.systemPackages = [ pkgs.polygon-art.polygon-art ];
+        })
+      ];
+    };
+  };
+}
+```
+
diff --git a/default.nix b/default.nix
new file mode 100644
index 0000000..e9fb6c5
--- /dev/null
+++ b/default.nix
@@ -0,0 +1,47 @@
+{ rustPlatform,
+  fetchgit,
+  lib,
+  cairo,
+  geos,
+  clipper,
+  clang,
+  pkg-config,
+  cmake,
+  openssl,
+  llvmPackages,
+  ... }:
+
+rustPlatform.buildRustPackage {
+
+  pname = "polygon-art";
+
+  version = "1.0.0";
+
+  # nix-prefetch-git-rendered --rev refs/heads/develop https://git.ingolf-wagner.de/palo/polygon-art.git
+  #src = fetchgit {
+  #  url = "https://git.ingolf-wagner.de/palo/polygon-art.git";
+  #  rev = "dfb6e0789ec67ee649050ad3b16d8b6a6b38955d";
+  #  sha256 = "0iqmikvl93pazxfd120hcr0waxav7zy6px5kmdqxifrjgdbda9xx";
+  #};
+  src = ./.;
+
+  #cargoSha256 = "05rkn8iihj4j9k179xx7wn2a07hxks050raj6fbxmj6gdx6aj170";
+  cargoSha256 = "0sgk4hw77cxqbqzd258fz67r7fpjblkm7cqh14n5f1c43y8vgxa0";
+  verifyCargoDeps = true;
+
+  # Needed so bindgen can find libclang.so
+  LIBCLANG_PATH = "${llvmPackages.libclang.lib}/lib";
+
+  buildInputs = [ cairo geos clipper openssl ];
+
+  nativeBuildInputs =
+    [ cmake llvmPackages.clang llvmPackages.libclang pkg-config ];
+
+  meta = with lib; {
+    description = "Framework with examples to generate plotter friendly SVGs";
+    homepage = "https://git.ingolf-wagner.de/palo/polygon-art.git";
+    license = licenses.gpl3Plus;
+    maintainers = [ maintainers.mrVanDalo ];
+  };
+}
+
diff --git a/flake.lock b/flake.lock
new file mode 100644
index 0000000..e4ba231
--- /dev/null
+++ b/flake.lock
@@ -0,0 +1,41 @@
+{
+  "nodes": {
+    "flake-utils": {
+      "locked": {
+        "lastModified": 1631561581,
+        "narHash": "sha256-3VQMV5zvxaVLvqqUrNz3iJelLw30mIVSfZmAaauM3dA=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "7e5bf3925f6fbdfaf50a2a7ca0be2879c4261d19",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1632855891,
+        "narHash": "sha256-crW76mt9/kbUBiKy/KiSnsQ9JEYgD3StDuYAMVkTbM0=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "73086069ebd402e85eaa39c06aef33c2b917f532",
+        "type": "github"
+      },
+      "original": {
+        "id": "nixpkgs",
+        "type": "indirect"
+      }
+    },
+    "root": {
+      "inputs": {
+        "flake-utils": "flake-utils",
+        "nixpkgs": "nixpkgs"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}
diff --git a/flake.nix b/flake.nix
new file mode 100644
index 0000000..d92c23b
--- /dev/null
+++ b/flake.nix
@@ -0,0 +1,17 @@
+{
+  description = "Framework with examples to generate plotter friendly SVGs";
+
+  #inputs.nixpkgs.url = "github:nixos/nixpkgs/nixos-21.05";
+  inputs.flake-utils.url = "github:numtide/flake-utils";
+
+  outputs = { self, nixpkgs, flake-utils , ... }:
+    flake-utils.lib.eachDefaultSystem (system:
+      let
+        pkgs = nixpkgs.legacyPackages.${system};
+        polygon-art = (pkgs.callPackage ./default.nix {});
+      in {
+        packages.polygon-art = polygon-art;
+        defaultPackage = polygon-art;
+      }
+    );
+}