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| author | Ogulcan Celik <ogulcancelik@gmail.com> | 2026-05-31 23:17:39 +0300 |
|---|---|---|
| committer | Ogulcan Celik <ogulcancelik@gmail.com> | 2026-05-31 23:17:39 +0300 |
| commit | 8a667f99d5a025106690c10858b5b71af15a47fc (patch) | |
| tree | f07e1d233b247a7e4b40e79b1a761f7018a585fa /scripts/nix_cargo_hash.py | |
| parent | 018cbfb84ad9516be3121d2264c61d9a4a3aebc1 (diff) | |
fix: use cargo lock for nix packaging
Diffstat (limited to 'scripts/nix_cargo_hash.py')
| -rw-r--r-- | scripts/nix_cargo_hash.py | 172 |
1 files changed, 0 insertions, 172 deletions
diff --git a/scripts/nix_cargo_hash.py b/scripts/nix_cargo_hash.py deleted file mode 100644 index 1e9a28f6..00000000 --- a/scripts/nix_cargo_hash.py +++ /dev/null @@ -1,172 +0,0 @@ -#!/usr/bin/env python3 -from __future__ import annotations - -import argparse -import re -import shutil -import subprocess -import sys -from pathlib import Path - - -class NixCargoHashError(ValueError): - pass - - -CARGO_HASH_RE = re.compile( - r"(?m)^(\s*cargoHash\s*=\s*)(\"sha256-[^\"]+\"|lib\.fakeHash)(;\s*)$" -) -GOT_HASH_RE = re.compile(r"\bgot:\s*(sha256-[A-Za-z0-9+/=]+)") - - -def find_cargo_hash_assignment(package_text: str) -> str: - matches = list(CARGO_HASH_RE.finditer(package_text)) - if len(matches) != 1: - raise NixCargoHashError( - f"expected exactly one cargoHash assignment, found {len(matches)}" - ) - return matches[0].group(2) - - -def replace_cargo_hash_assignment(package_text: str, replacement: str) -> str: - matches = list(CARGO_HASH_RE.finditer(package_text)) - if len(matches) != 1: - raise NixCargoHashError( - f"expected exactly one cargoHash assignment, found {len(matches)}" - ) - return CARGO_HASH_RE.sub( - lambda match: f"{match.group(1)}{replacement}{match.group(3)}", - package_text, - ) - - -def parse_got_hash(output: str) -> str: - hashes = GOT_HASH_RE.findall(output) - if len(hashes) != 1: - raise NixCargoHashError( - f"expected exactly one got: sha256-... hash, found {len(hashes)}" - ) - return hashes[0] - - -def run_capture(command: list[str]) -> subprocess.CompletedProcess[str]: - return subprocess.run( - command, - stdout=subprocess.PIPE, - stderr=subprocess.STDOUT, - text=True, - check=False, - ) - - -def run_checked(command: list[str]) -> None: - subprocess.run(command, check=True) - - -def discover_cargo_hash(package_path: Path) -> tuple[str, str]: - if shutil.which("nix") is None: - raise NixCargoHashError("nix is required to refresh nix/package.nix cargoHash") - if not package_path.exists(): - raise NixCargoHashError(f"{package_path} does not exist") - - original_text = package_path.read_text(encoding="utf-8") - original_assignment = find_cargo_hash_assignment(original_text) - discovered_hash: str | None = None - - try: - package_path.write_text( - replace_cargo_hash_assignment(original_text, "lib.fakeHash"), - encoding="utf-8", - ) - - system = run_capture( - ["nix", "eval", "--impure", "--raw", "--expr", "builtins.currentSystem"] - ) - if system.returncode != 0: - raise NixCargoHashError( - system.stdout.strip() or "failed to read Nix currentSystem" - ) - - build_attr = f".#packages.{system.stdout.strip()}.herdr" - print(f"building {build_attr} with lib.fakeHash to discover cargoHash") - result = run_capture(["nix", "build", build_attr, "--no-link", "--print-build-logs"]) - if result.returncode == 0: - raise NixCargoHashError( - "nix build succeeded with lib.fakeHash; could not discover cargoHash" - ) - - discovered_hash = parse_got_hash(result.stdout) - finally: - package_path.write_text(original_text, encoding="utf-8") - - return discovered_hash, original_assignment - - -def refresh_cargo_hash(package_path: Path) -> None: - discovered_hash, original_assignment = discover_cargo_hash(package_path) - - new_assignment = f'"{discovered_hash}"' - if new_assignment == original_assignment: - print(f"nix/package.nix cargoHash is unchanged: {discovered_hash}") - else: - print(f"updating nix/package.nix cargoHash to {discovered_hash}") - package_path.write_text( - replace_cargo_hash_assignment(package_path.read_text(encoding="utf-8"), new_assignment), - encoding="utf-8", - ) - - print("verifying Nix flake checks") - run_checked(["nix", "flake", "check", "--print-build-logs"]) - run_checked(["nix", "flake", "check", "--all-systems", "--no-build", "--print-build-logs"]) - print("nix/package.nix cargoHash is ready") - - -def check_cargo_hash(package_path: Path) -> None: - discovered_hash, current_assignment = discover_cargo_hash(package_path) - expected_assignment = f'"{discovered_hash}"' - if current_assignment != expected_assignment: - raise NixCargoHashError( - "nix/package.nix cargoHash is stale: " - f"expected {expected_assignment}, found {current_assignment}" - ) - print(f"nix/package.nix cargoHash matches discovered hash: {discovered_hash}") - - -def cmd_refresh(args: argparse.Namespace) -> int: - refresh_cargo_hash(Path(args.package)) - return 0 - - -def cmd_check(args: argparse.Namespace) -> int: - check_cargo_hash(Path(args.package)) - return 0 - - -def build_parser() -> argparse.ArgumentParser: - parser = argparse.ArgumentParser(description="Refresh nix/package.nix cargoHash") - subparsers = parser.add_subparsers(dest="command", required=True) - - check = subparsers.add_parser("check", help="Check cargoHash without patching") - check.add_argument("--package", default="nix/package.nix") - check.set_defaults(func=cmd_check) - - refresh = subparsers.add_parser("refresh", help="Refresh cargoHash using Nix") - refresh.add_argument("--package", default="nix/package.nix") - refresh.set_defaults(func=cmd_refresh) - - return parser - - -def main() -> int: - parser = build_parser() - args = parser.parse_args() - - try: - return args.func(args) - except (NixCargoHashError, subprocess.CalledProcessError) as exc: - print(f"error: {exc}", file=sys.stderr) - return 1 - - -if __name__ == "__main__": - raise SystemExit(main()) |
