feat: nix support for the nix folks (#3924)

Co-authored-by: opencode <[email protected]>
Co-authored-by: opencode-agent[bot] <opencode-agent[bot]@users.noreply.github.com>

1 files changed, 107 insertions, 0 deletions

diff --git a/flake.nix b/flake.nix
new file mode 100644
index 000000000..a6614a5dc
--- /dev/null
+++ b/flake.nix
@@ -0,0 +1,107 @@
+{
+  description = "OpenCode development flake";
+
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
+  };
+
+  outputs =
+    {
+      nixpkgs,
+      ...
+    }:
+    let
+      systems = [
+        "aarch64-linux"
+        "x86_64-linux"
+        "aarch64-darwin"
+        "x86_64-darwin"
+      ];
+      lib = nixpkgs.lib;
+      forEachSystem = lib.genAttrs systems;
+      pkgsFor = system: nixpkgs.legacyPackages.${system};
+      packageJson = builtins.fromJSON (builtins.readFile ./packages/opencode/package.json);
+      bunTarget = {
+        "aarch64-linux" = "bun-linux-arm64";
+        "x86_64-linux" = "bun-linux-x64";
+        "aarch64-darwin" = "bun-darwin-arm64";
+        "x86_64-darwin" = "bun-darwin-x64";
+      };
+      defaultNodeModules = "sha256-AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=";
+      hashesFile = "${./nix}/hashes.json";
+      hashesData =
+        if builtins.pathExists hashesFile then builtins.fromJSON (builtins.readFile hashesFile) else { };
+      nodeModulesHash = hashesData.nodeModules or defaultNodeModules;
+      modelsDev = forEachSystem (
+        system:
+        let
+          pkgs = pkgsFor system;
+        in
+        pkgs."models-dev"
+      );
+    in
+    {
+      devShells = forEachSystem (
+        system:
+        let
+          pkgs = pkgsFor system;
+        in
+        {
+          default = pkgs.mkShell {
+            packages = with pkgs; [
+              bun
+              nodejs_20
+              pkg-config
+              openssl
+              git
+            ];
+          };
+        }
+      );
+
+      packages = forEachSystem (
+        system:
+        let
+          pkgs = pkgsFor system;
+          mkNodeModules = pkgs.callPackage ./nix/node-modules.nix {
+            hash = nodeModulesHash;
+          };
+          mkPackage = pkgs.callPackage ./nix/opencode.nix { };
+        in
+        {
+          default = mkPackage {
+            version = packageJson.version;
+            src = ./.;
+            scripts = ./nix/scripts;
+            target = bunTarget.${system};
+            modelsDev = "${modelsDev.${system}}/dist/_api.json";
+            mkNodeModules = mkNodeModules;
+          };
+        }
+      );
+
+      apps = forEachSystem (
+        system:
+        let
+          pkgs = pkgsFor system;
+        in
+        {
+          opencode-dev = {
+            type = "app";
+            meta = {
+              description = "Nix devshell shell for OpenCode";
+              runtimeInputs = [ pkgs.bun ];
+            };
+            program = "${
+              pkgs.writeShellApplication {
+                name = "opencode-dev";
+                text = ''
+                  exec bun run dev "$@"
+                '';
+              }
+            }/bin/opencode-dev";
+          };
+        }
+      );
+    };
+}