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import collections
import json
import sys
class Key:
def __init__(self, path):
self.path = path
def __hash__(self):
result = 0
for id in self.path:
result ^= hash(id)
return result
def __eq__(self, other):
return type(self) is type(other) and self.path == other.path
Option = collections.namedtuple('Option', ['name', 'value'])
# pivot a dict of options keyed by their display name to a dict keyed by their path
def pivot(options):
result = dict()
for (name, opt) in options.items():
result[Key(opt['loc'])] = Option(name, opt)
return result
# pivot back to indexed-by-full-name
# like the docbook build we'll just fail if multiple options with differing locs
# render to the same option name.
def unpivot(options):
result = dict()
for (key, opt) in options.items():
if opt.name in result:
raise RuntimeError(
'multiple options with colliding ids found',
opt.name,
result[opt.name]['loc'],
opt.value['loc'],
)
result[opt.name] = opt.value
return result
options = pivot(json.load(open(sys.argv[1], 'r')))
overrides = pivot(json.load(open(sys.argv[2], 'r')))
# fix up declaration paths in lazy options, since we don't eval them from a full nixpkgs dir
for (k, v) in options.items():
v.value['declarations'] = list(map(lambda s: f'nixos/modules/{s}', v.value['declarations']))
# merge both descriptions
for (k, v) in overrides.items():
cur = options.setdefault(k, v).value
for (ok, ov) in v.value.items():
if ok == 'declarations':
decls = cur[ok]
for d in ov:
if d not in decls:
decls += [d]
elif ok == "type":
# ignore types of placeholder options
if ov != "_unspecified" or cur[ok] == "_unspecified":
cur[ok] = ov
elif ov is not None or cur.get(ok, None) is None:
cur[ok] = ov
# check that every option has a description
# TODO: nixos-rebuild with flakes may hide the warning, maybe turn on -L by default for those?
for (k, v) in options.items():
if v.value.get('description', None) is None:
print(f"\x1b[1;31mwarning: option {v.name} has no description\x1b[0m", file=sys.stderr)
v.value['description'] = "This option has no description."
json.dump(unpivot(options), fp=sys.stdout)
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