Always run setuptools_scm in the local environment (#21188)

It requires access to local git state, which is not going
to be available in other environments.

docs/notes/2.23.x.md

@@ -108,6 +108,8 @@ The docs for the `check` goal have been updated to state that third-party type s
 
 Deprecate the `--export-py-hermetic-scripts` option in favor of the new `--export-py-non-hermetic-scripts-in-resolve` option which allows configuring the hermetic scripts logic on a per-resolve basis.
 
+When using the `vcs_version` target, force `setuptools_scm` git operations to run in the local environment, so that the local git state is available to them.
+
 #### Terraform
 
 The default version of terraform has been updated from 1.7.1 to 1.9.0.

src/python/pants/backend/python/util_rules/vcs_versioning.py

@@ -30,11 +30,13 @@
 )
 from pants.backend.python.util_rules.pex import PexRequest, VenvPex, VenvPexProcess
 from pants.core.util_rules.stripped_source_files import StrippedFileName, StrippedFileNameRequest
+from pants.engine.environment import ChosenLocalEnvironmentName, EnvironmentName
 from pants.engine.fs import CreateDigest, FileContent
 from pants.engine.internals.native_engine import Digest, Snapshot
 from pants.engine.internals.selectors import Get, MultiGet
-from pants.engine.process import ProcessCacheScope, ProcessResult
-from pants.engine.rules import collect_rules, rule
+from pants.engine.intrinsics import process_request_to_process_result
+from pants.engine.process import ProcessCacheScope
+from pants.engine.rules import collect_rules, implicitly, rule
 from pants.engine.target import AllTargets, GeneratedSources, GenerateSourcesRequest, Targets
 from pants.engine.unions import UnionRule
 from pants.util.logging import LogLevel
@@ -57,6 +59,7 @@ class GeneratePythonFromSetuptoolsSCMRequest(GenerateSourcesRequest):
 async def generate_python_from_setuptools_scm(
     request: GeneratePythonFromSetuptoolsSCMRequest,
     setuptools_scm: SetuptoolsSCM,
+    local_environment_name: ChosenLocalEnvironmentName,
 ) -> GeneratedSources:
     # A MaybeGitWorktree is uncacheable, so this enclosing rule will run every time its result
     # is needed, and the process invocation below caches at session scope, meaning this rule
@@ -102,15 +105,19 @@ async def generate_python_from_setuptools_scm(
 
     argv = ["--root", str(maybe_git_worktree.git_worktree.worktree), "--config", config_path]
 
-    result = await Get(
-        ProcessResult,
-        VenvPexProcess(
-            setuptools_scm_pex,
-            argv=argv,
-            input_digest=input_digest,
-            description=f"Run setuptools_scm for {request.protocol_target.address.spec}",
-            level=LogLevel.INFO,
-            cache_scope=ProcessCacheScope.PER_SESSION,
+    result = await process_request_to_process_result(
+        **implicitly(
+            {
+                VenvPexProcess(
+                    setuptools_scm_pex,
+                    argv=argv,
+                    input_digest=input_digest,
+                    description=f"Run setuptools_scm for {request.protocol_target.address.spec}",
+                    level=LogLevel.INFO,
+                    cache_scope=ProcessCacheScope.PER_SESSION,
+                ): VenvPexProcess,
+                local_environment_name.val: EnvironmentName,
+            }
         ),
     )
     version = result.stdout.decode().strip()