97ebbdef91
Upstream Sapling does not maintain a Cargo.lock file, so Nixpkgs has its own. Teach the gen-deps.py script to update Nixpkgs' Cargo.lock whenever the Cargo.toml files change.
69 lines
2.4 KiB
Python
Executable file
69 lines
2.4 KiB
Python
Executable file
#!/usr/bin/env nix-shell
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#!nix-shell -i python3 -p cargo -p "python3.withPackages (ps: with ps; [ requests ])"
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import json
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import pathlib
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import re
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import tempfile
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import os
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import shutil
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from hashlib import sha1
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from struct import unpack
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from subprocess import run
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import subprocess
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from requests import get
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# Fetch the latest stable release metadata from GitHub
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releaseMetadata = get("https://api.github.com/repos/facebook/sapling/releases/latest").json()
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latestTag = releaseMetadata["tag_name"]
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latestTarballURL = releaseMetadata["tarball_url"]
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[_tarballHash, sourceDirectory] = run(
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["nix-prefetch-url", "--print-path", "--unpack", latestTarballURL],
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check=True,
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text=True,
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stdout=subprocess.PIPE,
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).stdout.rstrip().splitlines()
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def updateCargoLock():
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with tempfile.TemporaryDirectory() as tempDir:
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tempDir = pathlib.Path(tempDir)
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# NOTE(strager): We cannot use shutil.tree because it copies the
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# read-only permissions.
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for dirpath, dirnames, filenames in os.walk(sourceDirectory):
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relativeDirpath = os.path.relpath(dirpath, sourceDirectory)
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for filename in filenames:
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shutil.copy(os.path.join(dirpath, filename), tempDir / relativeDirpath / filename)
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for dirname in dirnames:
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os.mkdir(tempDir / relativeDirpath / dirname)
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run(["cargo", "fetch"], check=True, cwd=tempDir / "eden" / "scm")
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shutil.copy(tempDir / "eden" / "scm" / "Cargo.lock", "Cargo.lock")
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updateCargoLock()
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def nixPrefetchUrl(url):
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return run(
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["nix-prefetch-url", "--type", "sha256", url],
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check=True,
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text=True,
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capture_output=True,
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).stdout.rstrip()
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# Fetch the `setup.py` source and look for instances of assets being downloaded
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# from files.pythonhosted.org.
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setupPy = (pathlib.Path(sourceDirectory) / "eden/scm/setup.py").read_text()
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foundUrls = re.findall(r'(https://files\.pythonhosted\.org/packages/[^\s]+)"', setupPy)
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dataDeps = {
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"links": [{"url": url, "sha256": nixPrefetchUrl(url)} for url in foundUrls],
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"version": latestTag,
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# Find latest's git tag which corresponds to the Sapling version. Also
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# needed is a hash of the version, so calculate that here. Taken from
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# Sapling source `$root/eden/scm/setup_with_version.py`.
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"versionHash": str(unpack(">Q", sha1(latestTag.encode("ascii")).digest()[:8])[0]),
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}
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open("deps.json", "w").write(json.dumps(dataDeps, indent=2, sort_keys=True) + "\n")
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