the-way: pull source from github to be able to run unit tests (#405637)

pkgs/by-name/th/the-way/package.nix

@@ -1,7 +1,8 @@
 {
   lib,
+  stdenv,
   rustPlatform,
-  fetchCrate,
+  fetchFromGitHub,
   installShellFiles,
 }:
 
@@ -9,9 +10,11 @@ rustPlatform.buildRustPackage rec {
   pname = "the-way";
   version = "0.20.3";
 
-  src = fetchCrate {
-    inherit pname version;
-    hash = "sha256-/vG5LkQiA8iPP+UV1opLeJwbYfmzqYwpsoMizpGT98o=";
+  src = fetchFromGitHub {
+    owner = "out-of-cheese-error";
+    repo = "the-way";
+    tag = "v${version}";
+    hash = "sha256-zsfk5APxbnssMKud9xGc70N+57LSc+vk6sSb2XzFUyA=";
   };
 
   useFetchCargoVendor = true;
@@ -19,9 +22,10 @@ rustPlatform.buildRustPackage rec {
 
   nativeBuildInputs = [ installShellFiles ];
 
+  doCheck = !stdenv.hostPlatform.isDarwin;
   useNextest = true;
 
-  postInstall = ''
+  postInstall = lib.optionalString (stdenv.buildPlatform.canExecute stdenv.hostPlatform) ''
     $out/bin/the-way config default tmp.toml
     for shell in bash fish zsh; do
       THE_WAY_CONFIG=tmp.toml $out/bin/the-way complete $shell > the-way.$shell
@@ -35,6 +39,7 @@ rustPlatform.buildRustPackage rec {
     homepage = "https://github.com/out-of-cheese-error/the-way";
     changelog = "https://github.com/out-of-cheese-error/the-way/blob/v${version}/CHANGELOG.md";
     license = with licenses; [ mit ];
+    platforms = lib.platforms.unix;
     maintainers = with maintainers; [
       figsoda
       numkem