WIP: Remove python toolchain changes

.bazelrc

@@ -25,8 +25,12 @@ test:ci --test_output=errors
 # see: https://github.com/bazelbuild/bazel/issues/7844
 # This is only used in rules_haskell tests, so user won't face this
 # issue
+build:window --incompatible_use_python_toolchains=false
 test:window --incompatible_use_python_toolchains=false
 
+# Too complicated for now, and that's only used for tests
+build  --incompatible_use_python_toolchains=false
+
 # Needed on Windows for //tests/binary-with-data
 # see: https://github.com/tweag/rules_haskell/issues/647#issuecomment-459001362
 test:windows --experimental_enable_runfiles

WORKSPACE

@@ -165,7 +165,6 @@ register_toolchains(
     "//tests:c2hs-toolchain",
     "//tests:doctest-toolchain",
     "//tests:protobuf-toolchain",
-    "//tests:python_toolchain",
 )
 
 nixpkgs_cc_configure(
@@ -210,12 +209,6 @@ nixpkgs_package(
     repository = "@nixpkgs",
 )
 
-nixpkgs_package(
-    name = "python3",
-    attribute_path = "python3",
-    repository = "@nixpkgs",
-)
-
 nixpkgs_package(
     name = "sphinx",
     attribute_path = "python36Packages.sphinx",

tests/BUILD.bazel

@@ -59,25 +59,6 @@ c2hs_toolchain(
     tags = ["requires_c2hs"],
 )
 
-py_runtime(
-    name = "py3_runtime",
-    testonly = False,
-    interpreter = "@python3//:bin/python",
-    python_version = "PY3",
-    visibility = ["//visibility:public"],
-)
-
-py_runtime_pair(
-    name = "py_runtime_pair",
-    py3_runtime = ":py3_runtime",
-)
-
-toolchain(
-    name = "python_toolchain",
-    toolchain = ":py_runtime_pair",
-    toolchain_type = "@bazel_tools//tools/python:toolchain_type",
-)
-
 rule_test_exe(
     name = "test-binary-simple",
     size = "small",