1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
|
#!/usr/bin/env python3
"""
This script is a helper for this project's Meson buildsystem, to generate
manpages as mdbook markdown for nix3 CLI commands. It is an analogue to an
inline sequence of bash commands in the autoconf+Make buildsystem, which works
around a limitation in `nix eval --write-to`, in that it refuses to write to any
directory that already exists.
Basically, this script is a glorified but hopefully-more-robust version of:
$ rm -rf $output
$ nix eval --write-to $output.tmp --expr 'import doc/manual/generate-manpage.nix true
(builtins.readFile ./generate-manpage.nix)'
$ mv $output.tmp $output
"""
import argparse
import os.path
import shlex
import shutil
import subprocess
import sys
import tempfile
name = 'generate-manpage.py'
def log(*args, **kwargs):
kwargs['file'] = sys.stderr
return print(f'{name}:', *args, **kwargs)
def main():
parser = argparse.ArgumentParser(name)
parser.add_argument('--nix', required=True, help='Full path to the nix binary to use')
parser.add_argument('-o', '--output', required=True, help='Output directory')
parser.add_argument('--generator', required=True, help='Path to generate-manpage.nix')
parser.add_argument('--cli-json', required=True, help='Path to the nix.json output from Nix')
args = parser.parse_args()
with tempfile.TemporaryDirectory() as tempdir:
temp_out = os.path.join(tempdir, 'new-cli')
nix_args = [
args.nix,
'--experimental-features',
'nix-command',
'eval',
'-I', 'nix/corepkgs=corepkgs',
'--store', 'dummy://',
'--impure',
'--raw',
'--write-to', temp_out,
'--expr',
f'import {args.generator} true (builtins.readFile {args.cli_json})',
]
log('generating nix3 man pages with', shlex.join(nix_args))
subprocess.check_call(nix_args)
shutil.copytree(temp_out, args.output, dirs_exist_ok=True)
sys.exit(main())
|
