Problem: solomachine nix package don't support more platforms (#1107)

* Problem: solomachine nix package don't support more platforms

Solution:
- build on the fly

* fix solo machine path

* isort

* nix fmt

integration_tests/shell.nix

@@ -20,7 +20,6 @@ pkgs.mkShell {
   ];
   shellHook = ''
     export PYTHONPATH=$PWD/pystarport/proto_python/:$PYTHONPATH
-    export SOLO_MACHINE_HOME="${pkgs.solomachine}/solomachine"
     mkdir -p "$PWD/coverage"
     export GOCOVERDIR="$PWD/coverage"
   '';

integration_tests/test_solo_machine.py

@@ -1,6 +1,7 @@
 import json
 import os
 import platform
+import shutil
 from pathlib import Path
 
 import pytest
@@ -52,8 +53,8 @@ def __init__(
         self.chain_id = chain_id
         self.grpc_port = ports.grpc_port(base_port)
         self.rpc_port = ports.rpc_port(base_port)
-        self.solomachine_home = os.path.join(os.environ["SOLO_MACHINE_HOME"])
-        self.bin_file = os.path.join(self.solomachine_home, "solo-machine")
+        self.solomachine_home = Path(shutil.which("solo-machine")).parent.parent / "lib"
+        self.bin_file = "solo-machine"
         self.mnemonic = mnemonic
 
         os_platform = platform.system()

nix/default.nix

@@ -11,6 +11,7 @@ import sources.nixpkgs {
         doCheck = false;
       };
       hermes = pkgs.callPackage ./hermes.nix { src = sources.ibc-rs; };
+      solomachine = pkgs.callPackage ./solomachine.nix { };
     })
     (import "${sources.poetry2nix}/overlay.nix")
     (import "${sources.gomod2nix}/overlay.nix")
@@ -27,7 +28,6 @@ import sources.nixpkgs {
         find . -name "*.nix" -type f | xargs ${pkgs.nixpkgs-fmt}/bin/nixpkgs-fmt --check || EXIT_STATUS=$?
         exit $EXIT_STATUS
       '';
-      solomachine = pkgs.callPackage ../integration_tests/install_solo_machine.nix { };
       chain-maind-zemu = pkgs.callPackage ../. {
         ledger_zemu = true;
       };

nix/solomachine.nix

@@ -0,0 +1,29 @@
+{ fetchFromGitHub
+, lib
+, stdenv
+, darwin
+, rustPlatform
+, protobuf
+, rustfmt
+,
+}:
+rustPlatform.buildRustPackage rec {
+  pname = "ibc-solo-machine";
+  version = "0.1.4";
+
+  src = fetchFromGitHub {
+    owner = "crypto-com";
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "sha256-+jfRbPm31/pBuseUS89cuYSAPw2l/509MVTaUcuyaGY=";
+  };
+
+  cargoSha256 = "sha256-9Mx70yBoNy711PFC5y2VoXD3kqmcMvDsjP9AaC1VfCM=";
+  cargoBuildFlags = "-p solo-machine -p mnemonic-signer";
+  nativeBuildInputs = [
+    protobuf
+    rustfmt
+  ];
+  buildInputs = lib.optionals stdenv.isDarwin [ darwin.apple_sdk.frameworks.SystemConfiguration ];
+  doCheck = false;
+}