From 36bd30ff838a4ccd0aec581bed444c7044844151 Mon Sep 17 00:00:00 2001
From: mwojcik <mw@m-labs.hk>
Date: Wed, 19 Jan 2022 15:00:09 +0800
Subject: [PATCH] flakes: add basic flake.nix

---
 flake.lock | 61 ++++++++++++++++++++++++++++++++++
 flake.nix  | 96 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 157 insertions(+)
 create mode 100644 flake.lock
 create mode 100644 flake.nix

diff --git a/flake.lock b/flake.lock
new file mode 100644
index 0000000..f8dc803
--- /dev/null
+++ b/flake.lock
@@ -0,0 +1,61 @@
+{
+  "nodes": {
+    "mozilla-overlay": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1638887313,
+        "narHash": "sha256-FMYV6rVtvSIfthgC1sK1xugh3y7muoQcvduMdriz4ag=",
+        "owner": "mozilla",
+        "repo": "nixpkgs-mozilla",
+        "rev": "7c1e8b1dd6ed0043fb4ee0b12b815256b0b9de6f",
+        "type": "github"
+      },
+      "original": {
+        "owner": "mozilla",
+        "repo": "nixpkgs-mozilla",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1642348879,
+        "narHash": "sha256-ReoDCqqqGEQBmQHlQAXSLSk4LGO96HhBtxsF1TpOnLU=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "8a70a6808c884282161bd77706927caeac0c11e8",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixos-21.11",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "mozilla-overlay": "mozilla-overlay",
+        "nixpkgs": "nixpkgs",
+        "src-migen": "src-migen"
+      }
+    },
+    "src-migen": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1639659493,
+        "narHash": "sha256-qpVj/yJf4hDDc99XXpVPH4EbLC8aCmEtACn5qNc3DGI=",
+        "owner": "m-labs",
+        "repo": "migen",
+        "rev": "ac703010eaa06ac9b6e32f97c6fa98b15de22b31",
+        "type": "github"
+      },
+      "original": {
+        "owner": "m-labs",
+        "repo": "migen",
+        "type": "github"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}
diff --git a/flake.nix b/flake.nix
new file mode 100644
index 0000000..24de16f
--- /dev/null
+++ b/flake.nix
@@ -0,0 +1,96 @@
+{
+  description = "Firmware for MQTT-controlled 4-channel DDS signal generator using Urukul, Humpback and STM32 NUCLEO.";
+
+  inputs.nixpkgs.url = github:NixOS/nixpkgs/nixos-21.11;
+  inputs.mozilla-overlay = { url = github:mozilla/nixpkgs-mozilla; flake = false; };
+  inputs.src-migen = { url = github:m-labs/migen; flake = false; };
+
+  outputs = { self, nixpkgs, mozilla-overlay, src-migen }:
+    let
+      pkgs = import nixpkgs { system = "x86_64-linux"; overlays = [ (import mozilla-overlay) ]; };
+      rustManifest = pkgs.fetchurl {
+        url = "https://static.rust-lang.org/dist/2020-07-29/channel-rust-nightly.toml";
+        sha256 = "sha256-h8Irym/tKl0cJY3DmoxRD81IYZB/xLf7/AILLDuxDKY=";
+      };
+
+      migen = pkgs.python3Packages.buildPythonPackage rec {
+        name = "migen";
+        src = src-migen;
+        propagatedBuildInputs = [ pkgs.python3Packages.colorama ];
+      };
+
+      targets = [
+        "thumbv7em-none-eabihf"
+      ];
+      rustChannelOfTargets = _channel: _date: targets:
+        (pkgs.lib.rustLib.fromManifestFile rustManifest {
+          inherit (pkgs) stdenv lib fetchurl patchelf;
+          }).rust.override {
+          inherit targets;
+          extensions = ["rust-src"];
+        };
+      rust = rustChannelOfTargets "nightly" null targets;
+      rustPlatform = pkgs.recurseIntoAttrs (pkgs.makeRustPlatform {
+        rustc = rust;
+        cargo = rust;
+      });
+
+      humpback-dds = rustPlatform.buildRustPackage rec {
+        name = "humpback-dds";
+        version = "0.0.0";
+
+        src = self;
+        cargoLock = { 
+          lockFile = ./Cargo.lock;
+          outputHashes = {
+            "SaiTLS-0.1.0" = "sha256-T3hyASQGZAXGLKfOB3mh33VrvRlYSMc1CJdX4XvDFrQ=";
+            "rsa-0.3.0" = "sha256-9X2kDAOu0HG94HhwYoUtX/ezq99w7u95XMzn3h/JUwk=";
+            "minimq-0.1.0" = "sha256-yPqMAwyusZZW7571Jn3QVYK2jqmuSMNU6LiZXRYAGGM=";
+            "smoltcp-0.6.0" = "sha256-BCqcphWF3AotQfuIFYhDiWIMhh2eUCuqD4MPz4dASQ4=";
+          };
+        };
+
+        nativeBuildInputs = [
+          pkgs.llvm
+          (pkgs.python3.withPackages(ps: [ migen ]))
+          pkgs.yosys
+          pkgs.nextpnr
+          pkgs.icestorm
+        ];
+
+        buildPhase = ''
+          cargo build --release --bin humpback-dds
+        '';
+
+        installPhase = ''
+          mkdir -p $out $out/nix-support
+          cp target/thumbv7em-none-eabihf/release/humpback-dds $out/humpback-dds.elf
+          echo file binary-dist $out/humpback-dds.elf >> $out/nix-support/hydra-build-products
+          llvm-objcopy -O binary target/thumbv7em-none-eabihf/release/humpback-dds $out/humpback-dds.bin
+          echo file binary-dist $out/humpback-dds.bin >> $out/nix-support/hydra-build-products
+        '';
+
+        dontFixup = true;
+      };
+    in {
+      packages.x86_64-linux = {
+        inherit humpback-dds;
+      };
+
+      hydraJobs = {
+        inherit humpback-dds;
+      };
+
+      devShell.x86_64-linux = pkgs.mkShell {
+        name = "humpback-dds-dev-shell";
+        buildInputs = with pkgs; [
+          rustPlatform.rust.rustc
+          rustPlatform.rust.cargo
+          openocd dfu-util
+          ] ++ (with python3Packages; [
+            numpy matplotlib migen
+          ]);
+      };
+      defaultPackage.x86_64-linux = humpback-dds;
+    };
+}
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