Include commit hash under test in the report

nixpkgs_review/cli/pr.py

@@ -77,6 +77,8 @@ def pr_command(args: argparse.Namespace) -> str:
             Path,
             # Attrs to build for each system
             dict[System, list[Attr]],
+            # PR revision
+            str | None,
         ]
     ] = []
 
@@ -113,16 +115,24 @@ def pr_command(args: argparse.Namespace) -> str:
                     num_parallel_evals=args.num_parallel_evals,
                     show_header=not args.no_headers,
                 )
-                contexts.append((pr, builddir.path, review.build_pr(pr)))
+                contexts.append(
+                    (pr, builddir.path, review.build_pr(pr), review.head_commit)
+                )
             except NixpkgsReviewError as e:
                 warn(f"https://github.com/NixOS/nixpkgs/pull/{pr} failed to build: {e}")
         assert review is not None
 
         all_succeeded = all(
             review.start_review(
-                attrs, path, pr, args.post_result, args.print_result, args.approve_pr
+                commit,
+                attrs,
+                path,
+                pr,
+                args.post_result,
+                args.print_result,
+                args.approve_pr,
             )
-            for pr, path, attrs in contexts
+            for pr, path, attrs, commit in contexts
         )
 
         if args.no_shell:

nixpkgs_review/report.py

@@ -235,6 +235,7 @@ def to_file_uri(path: Path) -> str:
 class Report:
     def __init__(
         self,
+        commit: str | None,
         attrs_per_system: dict[str, list[Attr]],
         extra_nixpkgs_config: str,
         only_packages: set[str],
@@ -246,6 +247,7 @@ def __init__(
         *,
         checkout: Literal["merge", "commit"] = "merge",
     ) -> None:
+        self.commit = commit
         self.show_header = show_header
         self.max_workers = max_workers
         self.attrs = attrs_per_system
@@ -325,6 +327,8 @@ def markdown(self, pr: int | None) -> str:
                         option_value
                     )
             msg += f"Command: `{cmd}`\n"
+            if self.commit:
+                msg += f"Commit: `{self.commit}`\n"
 
         for system, report in self.system_reports.items():
             msg += "\n---\n"

nixpkgs_review/review.py

@@ -149,6 +149,7 @@ def __init__(
         self.extra_nixpkgs_config = extra_nixpkgs_config
         self.num_parallel_evals = num_parallel_evals
         self.show_header = show_header
+        self.head_commit: str | None = None
 
     def _process_aliases_for_systems(self, system: str) -> set[str]:
         match system:
@@ -314,6 +315,7 @@ def build(
 
     def build_pr(self, pr_number: int) -> dict[System, list[Attr]]:
         pr = self.github_client.pull_request(pr_number)
+        self.head_commit = pr["head"]["sha"]
 
         packages_per_system: dict[System, set[str]] | None = None
         if self.use_github_eval:
@@ -388,6 +390,7 @@ def build_pr(self, pr_number: int) -> dict[System, list[Attr]]:
 
     def start_review(
         self,
+        commit: str | None,
         attrs_per_system: dict[System, list[Attr]],
         path: Path,
         pr: int | None = None,
@@ -400,6 +403,7 @@ def start_review(
         if pr:
             os.environ["PR"] = str(pr)
         report = Report(
+            commit,
             attrs_per_system,
             self.extra_nixpkgs_config,
             checkout=self.checkout.name.lower(),  # type: ignore[arg-type]
@@ -455,6 +459,7 @@ def review_commit(
     ) -> None:
         branch_rev = fetch_refs(self.remote, branch)[0]
         self.start_review(
+            reviewed_commit,
             self.build_commit(branch_rev, reviewed_commit, staged),
             path,
             print_result=print_result,