python3Packages.chromadb: improve doCheck condition

On aarch64-linux onnxruntime cannot be imported, as it attempts to read
/sys/devices/system/cpu, which does not exist in the sandbox.

As onnxruntime cannot be imported, chromadb cannot be tested.

However, this issue only applies in the build sandbox, not at runtime.
Therefore the package doesn't need to be marked broken.

Updated the condition to check `buildPlatform` instead of `hostPlatform`,
as the issue relates to the build sandbox and is not a runtime issue.

Use `isAarch` and `isLinux` attributes instead of doing string comparison.

---

See #412528 (comment)
And upstream onnxruntime issue: microsoft/onnxruntime#10038

Author: MattSturgeon

pkgs/development/python-modules/chromadb/default.nix

@@ -171,10 +171,10 @@ buildPythonPackage rec {
 
   # Disable on aarch64-linux due to broken onnxruntime
   # https://github.com/microsoft/onnxruntime/issues/10038
-  pythonImportsCheck = lib.optionals (stdenv.hostPlatform.system != "aarch64-linux") [ "chromadb" ];
+  pythonImportsCheck = lib.optionals doCheck [ "chromadb" ];
 
   # Test collection breaks on aarch64-linux
-  doCheck = stdenv.hostPlatform.system != "aarch64-linux";
+  doCheck = with stdenv.buildPlatform; !(isAarch && isLinux);
 
   env = {
     ZSTD_SYS_USE_PKG_CONFIG = true;