mirror of
https://github.com/SebastianWendel/nixpkgs.git
synced 2024-09-23 13:45:49 +02:00
26dfc0c533
It looks like `with Path:` is supposed to be a context-manager for changing directory but it doesn't seem to work and the only way I've found to make that work is if we made our own and annotated it. Instead just use nix search path to tell the expression where to find the file it looks for. Also re-use SCRIPT_DIR elsewhere instead of re-"computing" it.
142 lines
4.2 KiB
Python
Executable file
142 lines
4.2 KiB
Python
Executable file
#!/usr/bin/env nix-shell
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#!nix-shell -p nix -p python3 -p git -i python
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# USAGE - just run the script: ./update.py
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# When editing this file, make also sure it passes the mypy typecheck
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# and is formatted with black.
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import fileinput
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import json
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import re
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import subprocess
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import tempfile
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import urllib.request
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from datetime import datetime
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from pathlib import Path
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from typing import Dict
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SCRIPT_DIR = Path(__file__).parent.resolve()
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def sh(*args: str) -> str:
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out = subprocess.check_output(list(args))
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return out.strip().decode("utf-8")
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def prefetch_github(owner: str, repo: str, ref: str) -> str:
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return sh(
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"nix-prefetch-url",
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"--unpack",
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f"https://github.com/{owner}/{repo}/archive/{ref}.tar.gz",
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)
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def get_radare2_rev() -> str:
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url = "https://api.github.com/repos/radare/radare2/releases/latest"
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with urllib.request.urlopen(url) as response:
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release = json.load(response) # type: ignore
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return release["tag_name"]
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def get_cutter_version() -> str:
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version_expr = """
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(with import <nixpkgs> {}; (builtins.parseDrvName (qt5.callPackage <radare2/cutter.nix> {}).name).version)
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"""
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return sh("nix", "eval", "--raw", version_expr.strip(), "-I", "radare2={0}".format(SCRIPT_DIR))
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def get_r2_cutter_rev() -> str:
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version = get_cutter_version()
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url = f"https://api.github.com/repos/radareorg/cutter/contents?ref=v{version}"
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with urllib.request.urlopen(url) as response:
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data = json.load(response) # type: ignore
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for entry in data:
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if entry["name"] == "radare2":
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return entry["sha"]
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raise Exception("no radare2 submodule found in github.com/radareorg/cutter")
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def git(dirname: str, *args: str) -> str:
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return sh("git", "-C", dirname, *args)
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def get_repo_info(dirname: str, rev: str) -> Dict[str, str]:
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sha256 = prefetch_github("radare", "radare2", rev)
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cs_tip = None
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with open(Path(dirname).joinpath("shlr", "Makefile")) as makefile:
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for l in makefile:
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match = re.match("CS_TIP=(\S+)", l)
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if match:
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cs_tip = match.group(1)
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assert cs_tip is not None
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cs_sha256 = prefetch_github("aquynh", "capstone", cs_tip)
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return dict(
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rev=rev,
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sha256=sha256,
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version_commit=git(dirname, "rev-list", "--all", "--count"),
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gittap=git(dirname, "describe", "--tags", "--match", "[0-9]*"),
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gittip=git(dirname, "rev-parse", "HEAD"),
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cs_tip=cs_tip,
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cs_sha256=cs_sha256,
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)
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def write_package_expr(version: str, info: Dict[str, str]) -> str:
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return f"""generic {{
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version_commit = "{info["version_commit"]}";
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gittap = "{info["gittap"]}";
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gittip = "{info["gittip"]}";
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rev = "{info["rev"]}";
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version = "{version}";
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sha256 = "{info["sha256"]}";
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cs_tip = "{info["cs_tip"]}";
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cs_sha256 = "{info["cs_sha256"]}";
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}}"""
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def main() -> None:
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radare2_rev = get_radare2_rev()
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r2_cutter_rev = get_r2_cutter_rev()
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with tempfile.TemporaryDirectory() as dirname:
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git(
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dirname,
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"clone",
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"--branch",
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radare2_rev,
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"https://github.com/radare/radare2",
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".",
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)
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nix_file = str(SCRIPT_DIR.joinpath("default.nix"))
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radare2_info = get_repo_info(dirname, radare2_rev)
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git(dirname, "checkout", r2_cutter_rev)
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timestamp = git(dirname, "log", "-n1", "--format=%at")
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r2_cutter_version = datetime.fromtimestamp(int(timestamp)).strftime("%Y-%m-%d")
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r2_cutter_info = get_repo_info(dirname, r2_cutter_rev)
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in_block = False
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with fileinput.FileInput(nix_file, inplace=True) as f:
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for l in f:
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if "#<generated>" in l:
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in_block = True
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print(
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f""" #<generated>
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# DO NOT EDIT! Automatically generated by ./update.py
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radare2 = {write_package_expr(radare2_rev, radare2_info)};
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r2-for-cutter = {write_package_expr(r2_cutter_version, r2_cutter_info)};
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#</generated>"""
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)
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elif "#</generated>" in l:
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in_block = False
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elif not in_block:
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print(l, end="")
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if __name__ == "__main__":
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main()
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