add infinitime environment

default.nix

@@ -1,7 +1,10 @@
-{ pkgs ? import <nixpkgs> {} }: {
+{ pkgs ? import <nixpkgs> {}
+, pkgsUnfree ? import <nixpkgs> { config = { allowUnfree = true; }; }
+}: {
   arduino = import ./envs/arduino/shell.nix { inherit pkgs; };
   cc2538-bsl = import ./envs/cc2538-bsl/shell.nix { inherit pkgs; };
   firefox = import ./envs/firefox/shell.nix { inherit pkgs; };
+  infinitime = import ./envs/infinitime/shell.nix { pkgs = pkgsUnfree; };
   github-pages = import ./envs/github-pages/shell.nix { inherit pkgs; };
   home-assistant = import ./envs/home-assistant/shell.nix { inherit pkgs; };
   nannou = import ./envs/nannou/shell.nix { inherit pkgs; };

envs/infinitime/README.md

@@ -0,0 +1,21 @@
+# InfiniTime
+
+Build environment for [InfiniTime](https://github.com/InfiniTimeOrg/InfiniTime/issues?q=is%3Aissue+is%3Aopen+gcc).
+
+Note: Uses `unfree` package `nrf5-sdk`!
+
+## Building the Project
+
+Build instructions:
+
+```
+$ nix-shell
+$ mkdir build
+$ cd build
+$ cmake -DARM_NONE_EABI_TOOLCHAIN_PATH=/usr -DNRF5_SDK_PATH=/usr/share/nRF5_SDK -DCMAKE_BUILD_TYPE=Release ..
+$ make -j6 pinetime-app
+```
+
+Note that the `ARM_NONE_EABI_TOOLCHAIN_PATH` is just `/usr` as everything is linked there.
+
+Further build instructions: https://github.com/InfiniTimeOrg/InfiniTime/blob/main/doc/buildAndProgram.md

envs/infinitime/shell.nix

@@ -0,0 +1,24 @@
+{ pkgs ? import <nixpkgs> {
+    config.allowUnfree = true;
+}, extraPkgs ? []
+}:
+
+(pkgs.buildFHSUserEnv {
+  name = "infinitime-env";
+  targetPkgs = pkgs: with pkgs; [
+    gcc-arm-embedded-10
+    nrf5-sdk
+    zlib
+    cmake
+    gcc10
+    (python3.withPackages(python: [
+      python.cbor
+      python.intelhex
+      python.click
+      python.cryptography
+      python.imgtool
+    ]))
+    nodePackages.lv_font_conv
+  ] ++ extraPkgs;
+  multiPkgs = null;
+}).env

flake.nix

@@ -7,6 +7,10 @@
     in {
       devShells = nixpkgs.lib.genAttrs systems (system: import ./. {
         pkgs = import nixpkgs { inherit system; };
+        pkgsUnfree = import nixpkgs {
+          inherit system;
+          config.allowUnfree = true;
+        };
       });
     };
 }