lix/meson/cargo-lock-to-wraps.py
Qyriad 95863b258b build: build lix-doc with Meson! 🎉
lix-doc is now built with Meson, with lix-doc's dependencies built as
Meson subprojects, either fetched on demand with .wrap files, or fetched
in advance by Nix with importCargoLock. It even builds statically.

Fixes #256.

Co-authored-by: Lunaphied <lunaphied@lunaphied.me>
Co-authored-by: Jade Lovelace <lix@jade.fyi>

Change-Id: I3a4731ff13278e7117e0316bc0d7169e85f5eb0c
2024-08-20 17:21:13 +00:00

44 lines
1.2 KiB
Python
Executable file

#!/usr/bin/env python3
import argparse
import tomllib
import sys
DOWNLOAD_URI_FORMAT = 'https://crates.io/api/v1/crates/{crate}/{version}/download'
WRAP_TEMPLATE = """
[wrap-file]
method = cargo
directory = {crate}-{version}
source_url = {url}
source_filename = {crate}-{version}.tar.gz
source_hash = {hash}
""".lstrip()
parser = argparse.ArgumentParser()
parser.add_argument('lockfile', help='path to the Cargo lockfile to generate wraps from')
parser.add_argument('outdir', help="the 'subprojects' directory to write .wrap files to")
args = parser.parse_args()
with open(args.lockfile, 'rb') as f:
lock_toml = tomllib.load(f)
for dependency in lock_toml['package']:
try:
hash = dependency['checksum']
except KeyError:
# The base package, e.g. lix-doc, won't have a checksum, and conveniently
# the base package is also not something we want a wrap file for.
# Doesn't that work out nicely?
continue
crate = dependency['name']
version = dependency['version']
url = DOWNLOAD_URI_FORMAT.format(crate=crate, version=version)
wrap_text = WRAP_TEMPLATE.format(crate=crate, version=version, url=url, hash=hash)
with open(f'{args.outdir}/{crate}-rs.wrap', 'w') as f:
f.write(wrap_text)