From 46d936b80c9bc17fa662820d03f7c9cdfabcabdc Mon Sep 17 00:00:00 2001
From: Ben-PH <benphawke@gmail.com>
Date: Fri, 18 Jul 2025 14:25:43 +0200
Subject: [PATCH] chore(ci): initial flake.nix file with dev shell
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Signed-off-by: Jakub Sokołowski <jakub@status.im>
---
 README.md  |  1 +
 flake.lock | 27 +++++++++++++++++++++++++++
 flake.nix  | 34 ++++++++++++++++++++++++++++++++++
 3 files changed, 62 insertions(+)
 create mode 100644 flake.lock
 create mode 100644 flake.nix

diff --git a/README.md b/README.md
index e40c1ea12..fa6e65487 100644
--- a/README.md
+++ b/README.md
@@ -71,6 +71,7 @@ git clone https://github.com/vacp2p/nim-libp2p
 cd nim-libp2p
 nimble install -dy
 ```
+You can use `nix develop` to start a shell with Nim and Nimble.
 ### Testing
 Run unit tests:
 ```sh
diff --git a/flake.lock b/flake.lock
new file mode 100644
index 000000000..8ffd05286
--- /dev/null
+++ b/flake.lock
@@ -0,0 +1,27 @@
+{
+  "nodes": {
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1752620740,
+        "narHash": "sha256-f3pO+9lg66mV7IMmmIqG4PL3223TYMlnlw+pnpelbss=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "32a4e87942101f1c9f9865e04dc3ddb175f5f32e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixos-25.05",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "nixpkgs": "nixpkgs"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}
diff --git a/flake.nix b/flake.nix
new file mode 100644
index 000000000..ae3a1acba
--- /dev/null
+++ b/flake.nix
@@ -0,0 +1,34 @@
+{
+  description = "nim-libp2p dev shell flake";
+
+  nixConfig = {
+    extra-substituters = [ "https://nix-cache.status.im/" ];
+    extra-trusted-public-keys = [ "nix-cache.status.im-1:x/93lOfLU+duPplwMSBR+OlY4+mo+dCN7n0mr4oPwgY=" ];
+  };
+
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-25.05";
+  };
+
+  outputs = { self, nixpkgs }:
+    let
+      stableSystems = [
+        "x86_64-linux" "aarch64-linux" "armv7a-linux"
+        "x86_64-darwin" "aarch64-darwin"
+        "x86_64-windows"
+      ];
+      forEach = nixpkgs.lib.genAttrs;
+      forAllSystems = forEach stableSystems;
+      pkgsFor = forEach stableSystems (
+        system: import nixpkgs { inherit system; }
+      );
+    in rec {
+      devShells = forAllSystems (system: {
+        default = pkgsFor.${system}.mkShell {
+          nativeBuildInputs = with pkgsFor.${system}; [
+            nim-2_2 nimble openssl.dev
+          ];
+        };
+      });
+    };
+}