80 lines
3 KiB
Python
80 lines
3 KiB
Python
import json
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import subprocess
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import sys
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from argparse import Namespace
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from pathlib import Path
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from tempfile import NamedTemporaryFile
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from typing import Any, Dict
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def index_repo(directory: Path, repo: str, expression_file: str) -> Dict[str, Any]:
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default_nix = directory.joinpath("default.nix").resolve()
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expr = """
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with import <nixpkgs> {};
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let
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nur = import %s { nurpkgs = pkgs; inherit pkgs; };
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in
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callPackage (nur.repo-sources."%s" + "/%s") {}
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""" % (
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default_nix,
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repo,
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expression_file,
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)
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with NamedTemporaryFile(mode="w") as f:
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f.write(expr)
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f.flush()
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query_cmd = ["nix-env", "-qa", "*", "--json", "-f", str(f.name)]
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try:
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out = subprocess.check_output(query_cmd)
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except subprocess.CalledProcessError:
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print(f"failed to evaluate {repo}", file=sys.stderr)
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return {}
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raw_pkgs = json.loads(out)
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pkgs = {}
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for name, pkg in raw_pkgs.items():
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pkg["_attr"] = name
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pkg["_repo"] = repo
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position = pkg["meta"].get("position", None)
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# TODO commit hash
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prefix = f"https://github.com/nix-community/nur-combined/tree/master/repos/{repo}"
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if position is not None and position.startswith("/nix/store"):
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path_str, line = position.rsplit(":", 1)
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path = Path(path_str)
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# I've decided to just take these 2 repositories,
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# update this whenever someone decided to use a recipe source other than
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# NUR or nixpkgs to override packages on. right now this is about as accurate as
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# `nix edit` is
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# TODO find commit hash
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prefixes = {
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"nixpkgs": "https://github.com/nixos/nixpkgs/tree/master/",
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"nur": "https://github.com/nix-community/nur-combined/tree/master/",
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}
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stripped = path.parts[4:]
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attrPath = "/".join(stripped[1:])
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location = f"{prefixes[stripped[0]]}{attrPath}"
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pkg["meta"]["position"] = f"{location}#L{line}"
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elif position is not None and position.find("nur-combined") > -1:
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path_str, line = position.rsplit(":", 1)
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stripped = path_str.partition(f"nur-combined/repos/{repo}")[2]
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pkg["meta"]["position"] = f"{prefix}{stripped}#L{line}"
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else:
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pkg["meta"]["position"] = prefix
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pkgs[f"nur.repos.{repo}.{name}"] = pkg
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return pkgs
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def index_command(args: Namespace) -> None:
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directory = Path(args.directory)
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manifest_path = directory.joinpath("repos.json")
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with open(manifest_path) as f:
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manifest = json.load(f)
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repos = manifest.get("repos", [])
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pkgs: Dict[str, Any] = {}
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for (repo, data) in repos.items():
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repo_pkgs = index_repo(directory, repo, data.get("file", "default.nix"))
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pkgs.update(repo_pkgs)
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json.dump(pkgs, sys.stdout, indent=4)
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