feat: rename s/host/system/g and use host interpret from rules_python

MODULE.bazel

@@ -10,3 +10,7 @@ bazel_dep(name = "rules_python", version = "0.32.2")
 
 internal_deps = use_extension("@rules_ophiuchus//python:extensions.bzl", "internal_deps")
 use_repo(internal_deps, "rules_ophiuchus_pip", "rules_ophiuchus_poetry_deps")
+
+python = use_extension("@rules_python//python/extensions:python.bzl", "python")
+python.toolchain(python_version = "3.12")
+use_repo(python, "python_3_12_host")

python/poetry_deps.bzl

@@ -47,7 +47,7 @@ def _package_impl(ctx):
     # Get Python target toolchain and corresponding tags
     py_toolchain = ctx.toolchains["@bazel_tools//tools/python:toolchain_type"]
     py_runtime_info = py_toolchain.py3_runtime
-    runtime_tag, tags = _derive_environment_markers(py_runtime_info.interpreter.path, ctx.attr.platforms, ctx.attr.host_platform)
+    runtime_tag, tags = _derive_environment_markers(py_runtime_info.interpreter.path, ctx.attr.platforms, ctx.attr.system_platform)
     python_version = tags["python_version"]
     platform_tags = tags["platform_tags"]
 
@@ -145,7 +145,7 @@ package = rule(
                   "Default value corresponds to platforms defined at " +
                   "https://github.com/bazelbuild/rules_python/blob/23cf6b66/python/versions.bzl#L231-L277",
         ),
-        "host_platform": attr.string(doc = "The host platform environment markers as a JSON string"),
+        "system_platform": attr.string(doc = "The system platform environment markers as a JSON string"),
         "_poetry_deps": attr.label(default = ":poetry_deps", cfg = "exec", executable = True),
     },
     toolchains = [

python/private/poetry_parse.bzl

@@ -24,7 +24,7 @@ def dfs_cycles(graph):
 def normalize_dep_name(dep_name):
     return dep_name.strip().strip('"').strip("'").replace("_", "-").replace(".", "-").lower()
 
-def parse_lock_file(data, platforms = None, generate_extras = True, host_platform_tags = None):
+def parse_lock_file(data, platforms = None, generate_extras = True, system_platform_tags = None):
     _MARKERS = "markers = "
     _SOURCE_URL = "url = "
     _SOURCE_TYPE = "type = "
@@ -112,7 +112,7 @@ package(
   name = "{name}",
   constraint = "{name}=={version}",{description}
   files = {{{files}
-   }},{deps}{markers}{source_urls}{extra_index_urls}{platforms}{host_platform_tags}
+   }},{deps}{markers}{source_urls}{extra_index_urls}{platforms}{system_platform_tags}
   visibility = [{visibility}],
 )
 """.format(
@@ -125,7 +125,7 @@ package(
             source_urls = "\n  source_urls = [\n{}\n  ],".format("\n".join(["    " + url + "," for url in source_urls])) if source_urls else "",
             extra_index_urls = "\n  extra_index_urls = [{}],".format(", ".join(extra_index_urls)) if extra_index_urls else "",
             platforms = "\n  platforms = {},".format(platforms) if platforms else "",
-            host_platform_tags = "\n  host_platform = {},".format(host_platform_tags) if host_platform_tags else "",
+            system_platform_tags = "\n  system_platform = {},".format(system_platform_tags) if system_platform_tags else "",
             visibility = ", ".join(['"{}"'.format(vis) for vis in visibility]),
         )
 
@@ -144,7 +144,7 @@ package(
 
     return result
 
-def get_host_platform_tags(rctx):
+def get_system_platform_tags(rctx):
     # Return a JSON string with a dict values as described in
     # https://peps.python.org/pep-0508/#environment-markers and
     # https://packaging.python.org/en/latest/specifications/platform-compatibility-tags/#platform-tag
@@ -175,14 +175,21 @@ print(json.dumps(json.dumps(dict(
     return "{}"
 
 def _poetry_parse_impl(rctx):
+    print(rctx.attr._python_host)
+    interpter = rctx.path(rctx.attr._python_host)
+    command = "import tomllib; print('{0}', 1); print(tomllib.load(open('{0}', 'rb')))".format(rctx.path(rctx.attr.lock))
+    print(command)
+    exec_result = rctx.execute([interpter, "-c", command], quiet = False)
+    print(exec_result)
+
     header = "# Autogenerated file _poetry_parse_impl at rules_ophiuchus/python/private/poetry_parse.bzl:175"
     rules_repository = str(rctx.path(rctx.attr._self)).split("/")[-4]
     rules_repository = ("@@" if "~" in rules_repository else "@") + rules_repository
-    host_platform_tags_variable = "host_platform_tags"
+    system_platform_tags_variable = "system_platform_tags"
     prefix = '''{header}\n\nload("{name}//python:poetry_deps.bzl", "package")'''.format(header = header, name = rules_repository)
-    host_platform_tags = """{k} = {v}""".format(k = host_platform_tags_variable, v = get_host_platform_tags(rctx))
-    lock_file_content = parse_lock_file(rctx.read(rctx.attr.lock), rctx.attr.platforms, rctx.attr.generate_extras, host_platform_tags_variable)
-    rctx.file("BUILD", "{}\n\n{}\n\n{}".format(prefix, host_platform_tags, lock_file_content))
+    system_platform_tags = """{k} = {v}""".format(k = system_platform_tags_variable, v = get_system_platform_tags(rctx))
+    lock_file_content = parse_lock_file(rctx.read(rctx.attr.lock), rctx.attr.platforms, rctx.attr.generate_extras, system_platform_tags_variable)
+    rctx.file("BUILD", "{}\n\n{}\n\n{}".format(prefix, system_platform_tags, lock_file_content))
     rctx.file("WORKSPACE")
 
 poetry_parse = repository_rule(
@@ -198,6 +205,10 @@ poetry_parse = repository_rule(
         "platforms": attr.string_dict(
             doc = "The mapping of interpter substrings to Python platform tags and environment markers as a JSON string",
         ),
+        "_python_host": attr.label(
+            allow_single_file = True,
+            default = "@python_3_12_host//:bin/python3",
+        ),
         "_self": attr.label(
             allow_single_file = True,
             default = ":poetry_parse.bzl",