fix combined_json for versions >0.3.10

CHANGELOG.md

@@ -6,10 +6,11 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased](https://github.com/vyperlang/vvm/)
 ### Changed
-- Update contact information in `CONTRIBUTING.md`
+- Update contact information in `CONTRIBUTING.md` ([#17](https://github.com/vyperlang/vvm/pull/17), [#18](https://github.com/vyperlang/vvm/pull/18))
 - Update dependencies. Minimum python version is now 3.8 ([#22](https://github.com/vyperlang/vvm/pull/22))
 - Add `output_format` argument to `compile_source` and `compile_files` ([#21](https://github.com/vyperlang/vvm/pull/21))
 - New public function `detect_vyper_version_from_source` ([#23](https://github.com/vyperlang/vvm/pull/23))
+- Fix `combine_json` for versions `>0.3.10` ([#29](https://github.com/vyperlang/vvm/pull/29))
 
 ## [0.1.0](https://github.com/vyperlang/vvm/tree/v0.1.0) - 2020-10-07
 ### Added

tests/test_compile_source.py

@@ -9,6 +9,7 @@ def test_compile_source(foo_source, vyper_version):
         pytest.skip("vyper 0.4.0b1 to 0.4.0b5 have a bug with combined_json")
     output = vvm.compile_source(foo_source)
     assert "<stdin>" in output
+    assert "bytecode" in output["<stdin>"]
 
 
 def test_compile_files(foo_path, vyper_version):

vvm/main.py

@@ -76,6 +76,7 @@ def compile_source(
         )
 
     if output_format in ("combined_json", None):
+        compiler_data.pop("version", None)
         return {"<stdin>": list(compiler_data.values())[0]}
     return compiler_data