mirror of
https://github.com/NixOS/nixpkgs.git
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25de2935ef
Documents the _module.args option, motivated by many usages in Flakes,
especially with the deprecation of extraArgs
(78ada83361)
The documentation rendering for this option had to be handled a bit
specially, since it's not declared in nixos/modules like all the other
NixOS options.
Co-Authored-By: pennae <github@quasiparticle.net>
Co-Authored-By: Robert Hensing <robert@roberthensing.nl>
96 lines
3.4 KiB
Python
96 lines
3.4 KiB
Python
import collections
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import json
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import sys
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from typing import Any, Dict, List
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JSON = Dict[str, Any]
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class Key:
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def __init__(self, path: List[str]):
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self.path = path
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def __hash__(self):
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result = 0
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for id in self.path:
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result ^= hash(id)
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return result
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def __eq__(self, other):
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return type(self) is type(other) and self.path == other.path
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Option = collections.namedtuple('Option', ['name', 'value'])
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# pivot a dict of options keyed by their display name to a dict keyed by their path
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def pivot(options: Dict[str, JSON]) -> Dict[Key, Option]:
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result: Dict[Key, Option] = dict()
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for (name, opt) in options.items():
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result[Key(opt['loc'])] = Option(name, opt)
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return result
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# pivot back to indexed-by-full-name
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# like the docbook build we'll just fail if multiple options with differing locs
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# render to the same option name.
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def unpivot(options: Dict[Key, Option]) -> Dict[str, JSON]:
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result: Dict[str, Dict] = dict()
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for (key, opt) in options.items():
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if opt.name in result:
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raise RuntimeError(
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'multiple options with colliding ids found',
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opt.name,
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result[opt.name]['loc'],
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opt.value['loc'],
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)
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result[opt.name] = opt.value
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return result
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warningsAreErrors = sys.argv[1] == "--warnings-are-errors"
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optOffset = 1 if warningsAreErrors else 0
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options = pivot(json.load(open(sys.argv[1 + optOffset], 'r')))
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overrides = pivot(json.load(open(sys.argv[2 + optOffset], 'r')))
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# fix up declaration paths in lazy options, since we don't eval them from a full nixpkgs dir
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for (k, v) in options.items():
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# The _module options are not declared in nixos/modules
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if v.value['loc'][0] != "_module":
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v.value['declarations'] = list(map(lambda s: f'nixos/modules/{s}', v.value['declarations']))
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# merge both descriptions
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for (k, v) in overrides.items():
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cur = options.setdefault(k, v).value
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for (ok, ov) in v.value.items():
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if ok == 'declarations':
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decls = cur[ok]
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for d in ov:
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if d not in decls:
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decls += [d]
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elif ok == "type":
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# ignore types of placeholder options
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if ov != "_unspecified" or cur[ok] == "_unspecified":
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cur[ok] = ov
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elif ov is not None or cur.get(ok, None) is None:
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cur[ok] = ov
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severity = "error" if warningsAreErrors else "warning"
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# check that every option has a description
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hasWarnings = False
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for (k, v) in options.items():
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if v.value.get('description', None) is None:
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hasWarnings = True
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print(f"\x1b[1;31m{severity}: option {v.name} has no description\x1b[0m", file=sys.stderr)
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v.value['description'] = "This option has no description."
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if v.value.get('type', "unspecified") == "unspecified":
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hasWarnings = True
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print(
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f"\x1b[1;31m{severity}: option {v.name} has no type. Please specify a valid type, see " +
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"https://nixos.org/manual/nixos/stable/index.html#sec-option-types\x1b[0m", file=sys.stderr)
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if hasWarnings and warningsAreErrors:
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print(
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"\x1b[1;31m" +
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"Treating warnings as errors. Set documentation.nixos.options.warningsAreErrors " +
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"to false to ignore these warnings." +
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"\x1b[0m",
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file=sys.stderr)
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sys.exit(1)
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json.dump(unpivot(options), fp=sys.stdout)
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